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GNS3 Testing IN Progress !

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Created on: May 30, 2012 2:00 AM by Cristian F. Stoica - Last Modified:  May 30, 2012 2:13 AM by Cristian F. Stoica

Well, I decided to play a bit with GNS3; have a bit of Fun with it;  I will update the progress every week, so check in often.

 

PC is new Intel i7 (4 cores & 4 HT); only 4 GB RAM (for now), SATA, and Win 7 64-bit.

 

test #1: No running routing protocols; but with no exec-time out set on all routers.

One IOS across topology with same idle-pc values. Running 24 3725 routers (L3 switch is actually 3725 router with NM-16ESW)

 

Result: With 24 routers: More RAM, the Better; need Raid 0 ?

24 Routers in GNS3 Win7-64.png

Questions: What is Standby RAM (dark blue on graphic) ? There is also Free Memory

 

Next: Will try to **** PC by adding more routers.

Add MPLS and OSPF protocols.

============================================================

 

Running MPLS over EIGRP in the Core (ISPs) and BGP between HQ and Branch.  With 7 routers, GNS is stable at 0-1% of CPU and 51% RAM. Pings HQ to Branch are peaking at 9-10%. Traceroute reaching 14%

MPLS withBGP and OSPF.7Rs run.png

 

Message was edited by: Martin

 

Martin, first thing you'd wanna do in GNS3 is calculate the IDLE PC value for each of your router images. Without that, dynamips really taxes your comp.

My PC config: AMD Phenom II X4 (Quad-core), a 1GB video card by MSI (HAWK version), 4 GB DDR3, 500 Gb HDD.

I'd say I have a pretty decent rig, and without IDLE PC my CPU temperature reaches 50 with only a few routers and 25-30% of memory usage (my PC usually runs at 30 C. 27C while doing nothing).

 

Dear Martin

 

First of all, I would like to say you are very lucky using windows 7 with GNS3. Because windows7 has readyboost feature

http://windows.microsoft.com/en-US/windows7/products/features/readyboost. You can simply increase your memory with USB flash drive.

 

If you know linux commands and familiar , you can add PC with Qemu (host https://learningnetwork.cisco.com/message/82967) . Qemu is better than VPC. Actually it is Redhat based commands. For example, if you do not know how to set your default gateway, you can find in google for desired commands . You don't need to master linux.

 

 

Please refer to http://www.ccie-in-3-months.blogspot.com/2008/05/how-to-use-extended-range-vlans-in-nm.html

for switching in GNS3.

 

As I have not used Resource monitor instead of Windows's Default Task Manager, I am sorry I could not provide what that is.

 

 

regards

Real

 

Martin, you can also check my notes here, I've put some notes about GNS3 during my BCMSN/SWITCH preparation.

 

A great tip for GNS3, don't use the Dynamips consoles.

 

Instead use a terminal(Telnet) program like SecureCRT (Has tabs) and just connect to 127.0.0.1 <port>. You can set the port by right clicking a device and hitting "Set local console port" iirc. Using this method you alleviate two problems:

 

1) If you close an hypervisor window you device in effect shuts down. Using Telnet/Console through a client GNS runs the hypervisor in memory instead and can directly save the configs

2) You don't have 24 tabs to surf through in order to find the correct device

3) Not relevant: This method helps to enforce access principles used on the job.

 

I have also expanded this method to allow remote connections from outside of my network through the use of Static PAT

 

Martin you have helped me many times thanks

 

I started using this Usage meter awhile ago I think that you will like it's size and configurable features.

 

http://img709.imageshack.us/img709/148/capturejxq.jpg

 

I found it free in a short time google usage meter, windows usage meter,

 

hope you like it

 

Mr. Snedie,

        Absolutely you are correct. I actually run GNS3 on a dedicated server. I have all my SecureCRT configs on my  laptop and connect remotely. IP of server and console port. Works great and I'm not impacting the GNS3 performance by running local shells.

 

--Charles

 

Hey hey, I'm glad you guys are talking about GNS3... Check this out, i'll be buying these parts in two weeks, specifically for running GNS3 and connecting to physical networks    Let me know what you think.  Be prepared with your comments if you have any suggestions, I will gladly accept your advice if it sounds good.

 

 

SEE ATTACHED PDF

 

Nice specs. I just finished writing an article on hardwiring GNS3 to physical switches on GNU/Linux. Hit me offline if you want any details.

 

Scratch that memory I listed, it's too fast for the motherboard.  I'll be getting somewhere between DDR3 1600 - DDR3 1866 mhz Dual Channel

 

Joshua, CCNA wrote:

 

Scratch that memory I listed, it's too fast for the motherboard.  I'll be getting somewhere between DDR3 1600 - DDR3 1866 mhz Dual Channel

 

It doesn't matter if the RAM is "Too fast", it will simply run at the maximum speed the system bus can support: So if you put 1800Mhz RAM into a 1666Mhz motherboard bus it will run at 1666Mhz.

 

Joshua, quite honestly, I'd re-consider the choice to go AMD.  Intel's new Sandy Bridge processors, which are the second generation Core series of CPUs, are simply smoking hot both in performance and in price.  Yes, I am an Intel fan.

 

I priced out a full system minus a case and a video card for $800 on NewEgg that would crush most dynamips labs.  Tough to beat that price.

 

I can say, for a single video card, only one hard drive, and only one CPU - a 1200W power supply is way overkill.  You could probably get away with a 600W-750W PSU and still run way under capacity.

 

Send me a link and i'll look into what you are talking about as far as Intel goes.  I'm not going to get into a war about AMD and intel though.

 

As far as the power supply goes, it's all about scailability.

 

I was looking for more of an opinion based on incompabilities and such.

 

I know it doesn't matter, but I don't feel like paying for more than the motherboard will accept.

 

You do have a point though, if I overclock, at least I would know the memory can take the abuse.

 

Mr.Snedie wrote:

 

Joshua, CCNA wrote:

 

Scratch that memory I listed, it's too fast for the motherboard.  I'll be getting somewhere between DDR3 1600 - DDR3 1866 mhz Dual Channel

 

It doesn't matter if the RAM is "Too fast", it will simply run at the maximum speed the system bus can support: So if you put 1800Mhz RAM into a 1666Mhz motherboard bus it will run at 1666Mhz.

 

Nope, not trying to start an Intel vs AMD war, to each their own.  If you are comfortable with AMD, then by all means go for it!  I just wanted to throw the new Core processors out there in case you had not seen them.  Specifically the Core i7 2600K, otherwise just known as the 2600K.  K meaning the multiplier is unlocked, and people have been hitting 5Ghz with this CPU on P67 motherboards.  That is a $320 CPU on a $150 motherboard, running 5Ghz, quad core with hyperthreading.  It's crazy - even a conservative OC of just 1Ghz still puts you at 4.4Ghz.

 

Since you're running Windows the ATI graphics card isn't much of an issue.  If you were to ever want to run Linux you may encounter a few issues, not sure what their support is like for that card specifically.  I know Nvidia enjoys a much broader support base in Linux overall.

 

I know your not, I'm just saying.  You going to send me that link?  Honestly, It's been a while since I built a PC, so I'm out of date.

 

All I know is that Intel has always been more expensive, and I'm sure there are good reasons why, and some bad...  I've herad the i7 is better than the AMD Phenom II x6, but 3 times the cost with the unlocked multiplyer version, so I'm super computing on a budget if you know what I mean...

 

Send me that link about the Intel CPU your talking about.

 

I agree, Intel is better.

My body has AMD PHENOM II X6 and I was not impressed. In fact, I went to run GNS3, same topology as above. I will run the topology again on several PCs and laptops and will post the results.

 

Josh, about your motherboard,

- ONLY 1 NIC, Dual NICs may be better. You will save PCI ports for other NICs or "stuff".

 

Martin, could elaborate on the dual NIC idea?  You mean find a motherboard with dual NICs?

 

Maybe you could give me an idea of a better one?

 

 

 

Martin wrote:

 

Josh, about your matherboard,

- ONLY 1 NIC, Dual NICs may be better. You will save PCI ports for other NICs or "stuff".

 

Yes, sorry I meant dual-NICs on the motherboard.

 

If you curious about CPUs, Here is link to compare several CPUs with various benchmarking tests. Intel 4-core beats AMD 6-core in all except encryption benchmark. I found this very interesting.

 

http://www.tomshardware.com/charts/desktop-cpu-charts-2010/benchmarks,112.html

 

Very nice.  If I had the money Intel would be the obvious choice.  I just looked a a couple scoring categories, and the Top Intel was about twice as better as the top AMD...  Of course the Top intel was more than 5 times the price as the AMD, so is Intel better yes... do I need Intel for GNS3?  No

 

Would I like the most powerful computer on earch.... Sure.   So I'll just stick with AMD until I start making more money, hehe.

 

The new intel chipsets look very interesting indeed, feeling any upgraditis Martin?

 

Im more than happy with my little i3-330 laptop, not even in the same category as your cpu Martin, but it does well, one interesting observation i've had, my wife is a public high(secondary)school teacher and she gets given a laptop for work, it is a dell i5 laptop that runs Vista on a SOE built by the government(Queensland Education) it has 4 Gb Ram, i could only get 4 3600 series routers to run on it before things would start to go wrong, cpu was 100% regardless of idle-pc value, RAM at 50% or so, with my little i3 running Win7 enterprise, 4Gb RAM i had over 10 running Multiarea OSPF last night without a problem, cpu humming at about 20% max, i love it!!!

 

PS have you seen the youtube vid with over 100 routers started simultaneously? he's running a i7-950 i think from memory, the only problem is none of the routers are configured, none are connected, still impressive though!

 

Warren Sullivan wrote:

 

The new intel chipsets look very interesting indeed, feeling any upgraditis Martin?

 

The new Sandy Bridge won't be a huge jump from current Core i7s, a jump yes but not worth the cost(since they involve new motherboards as the Sandy Bridge run on LGA1155).  However, from anything other than a core i7, it should be a very noticeable improvement.

 

Joshua, sorry man, I got off the computer for the night.  Family was grumpy from all the CCIE studies, said it was their night!!

 

Here is a short list of components for the Intel build.  Add a hard drive and a case and you're good to go.

 

 

Even with a hard drive that was $70, at NewEgg that came out to around $800.  You don't need a fancy case, but even a nice case at $100 doesn't make the build terribly expensive.

 

You can even find cheaper motherboards but that one has good ratings.  I always encourage people to do their own research to figure out what they need.  I am not saying THAT motherboard is what I'd use but it's a good one from what I can tell. Gigabyte also has a mess of boards on the market in the P67 chipset space but they seem to get mixed reviews on Newegg.  Also, obviously shop around, Newegg may not have the best price.

 

Oh ****..... after reading about sandy bridge it looks like I have no choice but to dump AMD.  It almost doesn't seem possible that Intel drops their prices so drastically.  This is the sort of move that would totally destroy AMD?  I don't get it?

 

Seems too good to be true, but anyway, i'm going to put together a new list that includes Sandy Bridge, thanks Travis.

 

I'm actually excited about this PC now... Check out my new list and let me know if I'm missing something!!!!

 

NEW PDF ATTACHED

 

Looks like a good list, one thing I would change is get 8GB of RAM, via 2 sticks of 4GB each.  It seems like a magic number for price - as the cost you're showing at Frys, is only $20 less for 4GB than I priced out 8GB at Newegg for.

 

Plus, when you want to expand beyond 8GB, you will have more open slots to use and will not have to replace the 2GB sticks you're currently using. For example, if you ever go into Voice, you wind up needing servers, and more than 8GB of memory makes that much easier.

 

Overall I think Fry's is great to walk into the store and buy things from, as they carry a lot of little odds and ends, but I rarely order online as their prices never seem to be any better than say NewEgg or Amazon.  Just a thought there.....compare prices!  I've saved hundreds on previous PC builds buy sourcing from more than one place.  Of course, you can build an entire PC from NewEgg and still be getting the best prices half the time.

 

  I have used this link as a price refference for PC building for more than 15 years.

 

@ this link I see your HD choice  you could save $40.00 the video card could save $30.00 memory has corsair brand #save 20.00,,

 

The P8P67 I see for $80.00 less @ at least 3 locations.

A possible 50% save on a case.

The cpu,& power supply price are spot on though.

 

if you dig deep into reading about power supply building (very boreing and lenghty) but you will find that Corsair has theirs built by a very high end builder that  has solid impresive OE spec, and is also a good value.

 

http://www.pricewatch.com

 

New Egg certainly is a great place, ( I love them Also), they have top notch warrenty replacment, and they survived a tough industry for more than a decad, they have lovely photos, and customer comments but they are not always the cheepest.

 

I agree, I will be going to frys in person to pick up the memory.

 

Travis wrote:

 

Looks like a good list, one thing I would change is get 8GB of RAM, via 2 sticks of 4GB each.  It seems like a magic number for price - as the cost you're showing at Frys, is only $20 less for 4GB than I priced out 8GB at Newegg for.

 

Plus, when you want to expand beyond 8GB, you will have more open slots to use and will not have to replace the 2GB sticks you're currently using. For example, if you ever go into Voice, you wind up needing servers, and more than 8GB of memory makes that much easier.

 

Overall I think Fry's is great to walk into the store and buy things from, as they carry a lot of little odds and ends, but I rarely order online as their prices never seem to be any better than say NewEgg or Amazon.  Just a thought there.....compare prices!  I've saved hundreds on previous PC builds buy sourcing from more than one place.  Of course, you can build an entire PC from NewEgg and still be getting the best prices half the time.

 

I'll be overclocking this baby, so I scrapped the heatsink I chose, and am opting for a Corsair H70 for max cooling:

 

http://www.corsair.com/cooling/hydro-series/corsair-hydro-seriestm-h70.html

 

I suggest the CoolIT 240mm system rather than the H70. The corsair H series are renowned for their poor performance and exaggerated prices (There are air coolers for under £20 that give better performance).

 

I run an i5 at 4.32Ghz (1.412vcore): Idle Temp 32c - Average Highest temp @ 22hr Stress 72c - Normal running temps in games 45-52c

 

What ever your choice, the key to good temps is correct application of heat paste. Do NOT spread it manually with a card, but instead place 5 small (very) dots of it (Corners+Middle (Slightly larger)). Then place the heatsink on, and turn it 20 degrees either way and then secure it down. Doing this gives you a full coverage of the CPU and ensures that paste actually goes into the crevasses.

 

Interesting, I know that the Corsair H70 is supposed to be a great upgrade from the H50, and I've seen great reviews on the Corsair H70.

 

If you could send me a link about your suggestion, your suggestion might hold more weight.  I did look at the CoolIT, and the radiator is quite large, but the H70 is much thicker

 

Thicker means the air has to travel farther through the radiator picking up more heat, as opposed to a wide open radiator where air just flys through it easily.

 

Interesting on the thermal paste application method, I haven't built that many PCs, but your method makes sense; does any thermal paste bulge out after placing the cooling plate on the cpu?

 

Nope, if you get any at all petruding from the edges then you put WAY to much on. The less the better in most cases, all you need to do is fill the distance between two gaps that are about 12 microns deep. Any more and all you are doing is adding more material in which the heat must travel.

 

I'll have to try that out on something else before hand to get it just right, thanks for the tip.

 

l have owned a corsair hydro system it went bad after 9 months the pump died. they hid that model and made their embarrassment disappear from existence and then said that it was not theirs, then they gave no warranty. Corsair makes good memory and power supply their hydro is entry level at best.

 

grimord, sounds like you had a bad experience but from what I've seen the Corsair H70 hangs with the best.

 

Here's one video, from a reputable online tech guy:  http://www.youtube.com/watch?v=CNOGqSmzqNw

 

Anyway, enough of the chit chat about cooling.  Any news on your GNS3 tests, Martin?

 

Tomorrow ! PC is not for me; just building for someone; I will have it back for last time tomorrow.

 

My PC is AMD 3GHz dual-core and it's not better than older Intel Duo 2.66 GHz (at work) which made me upset .

I will run GNS tests on those later too; initially, GNS3 seems to run better on Intel at work than on AMD at home!

 

Finally, added one test today, later will add more.

 

Running MPLS over EIGRP in the Core (ISPs) and BGP between HQ and Branch.  With 7 rotuers, GNS is stable at 9-12% of CPU and 51% RAM. Pinging HQ to Branch are peaking at 13-15%.

 

See page 1

 

What router model are you using in GNS3? Any chance of getting the configuration files?

 

c3725-adventerprisek9-mz.124-15.T5  Will upload configs later.

 

Martin, did you say you were using good idle-pc values, or are you just relying on brute force?

 

I did once. I didn't do it for the second or third dynampis. 7 routers are running over 3 dynampis processes.

I could tweak it to see if I can bring CPU down, but comparing what I saw on other PCs running same topology, that is not bad.

 

Are you saying you didn't use IDLE-PC on the second or third test?

 

If not, I'd like to see how much of the cpu is used without idle-pc values, that should be interesting.

 

Idle-pc is set once per IOS; I don't do idle-pc every time when I re-load or create new topology.

 

Once idle-pc is set; it is saved and you do not have to re-do idle-pc again, right ?

 

You could further tweak GNS when you have more than 3 routers: 3 routers per dynamips-xp process.

 

I'm not savy on how dynamips works, all I know is I sometimes have to set the IDLE-PC values more than once on the same router/IOS.

 

"more than once " -that would be when you have (drag) 4th router on topology with previous 3 running.

 

first 3 routers are using same idle-pc but when you drag the forth one, you will see new dynampis process in Task Manager. Start the 4th router and do idle-pc on that router only (leave older 3 alone).

 

Same thing with 7th router, new dynampis process and do idle-pc per # 7 as his value might be different.

 

This is Advanced Tweaking as usually your don't gain that much unless your CPU cannot handle 3 routers very well.

 

Yes, that makes sense.  I do remember seeing multiple dynamips processes before whenever I used GNS3.

 

Currently I'm running an AMD Athlon Dual Core, i got it just to study for my ccna.  I didn't know about GNS3 at the time.  It runs GNS3 fine, but without idle-pc, one router not even configured yet takes up 50% of the cpu.

 

So... I can't wait to upgrade, a little less than a week I am going to order my computer parts.

 

I think thats normal Joshua, i run an i3 and it will do the same with some images, but with that idle-pc set, i can have 15 routers running on 5% (no config), with heavy config it will generally sit around 25% but at that point my RAM is running around 80% with 15 routers (4Gb)

 

hmmmmmmmmmmmm, well I will be submitting my test results of course

 

Martin, that must be a Windows thing.  Regardless of whether I start 5 or 10 routers, either in straight dynamips/dynagen, or within GNS3, I only see a single dynamips process to handle them all.

 

Of course, I'm running a 64-bit OS, on 8GB of RAM.  I'm running an older Core2Quad Q9550 though so I can't throw up 20 routers.

 

Yet. 

 

hmm, interesting, I have Ubuntu box somewhere here, will check it out; maybe there is a setting for that ?

But, wouldn't you want to run multiple processes for large number of routers ?

 

I found setting: under Preferences > dynamips > HyperVisor manager > Memory Usage Limit per Hypervisor >> adjusting size RAM Memory here will increase or reduce number of routers per process of dynamips.

 

0 = allows 1 router per one dymaips process per router !

512 = 3 routers per process <<what I had

1024 = 8 routers per process

 

Edit: adding Memory settings

 

Martin, I don't particularly care how many processes there are - it still threads across the CPU's just fine.  I've actually found an idle-pc value that keeps my CCIE lab running around 60% with all the bells and whistles turned on, as is, so I can't complain.

 

I think running more processes (like 3 routers per one dynamips process) gives you more control over Idle-pc values; therfore reducing CPU usage, improving performance. Not tested yet, will try to see what happens.

 

For what it's worth, I've always configured my IDLE-PC on a per router basis. Regardless of model and IOS. I've found that running over Debian (or Ubuntu) the overall CPU does drop a little. I can't say if Windows handles the threads the same way. I usually run about 3 routers per Hypervisor.

 

Chenson, Martin,

 

IDLE-PC is per image.  It is an evaluation - based on the sample observation time period - of dynamips' ability to interrupt the emulated router during what is perceived as "down time" on the emulated CPU cycles.

 

Once you find a good IDLE_PC, you should stick with it for that image.  Changing it per device should not net you a better result(although it can happen), it may not really be worth the time it takes.

 

Now, with Windows being limited to the amount of memory per process, this may change things, I wouldn't think so since the image is the same, but who knows.  I don't use GNS3 on Windows enough to dedicate the time to testing.

 

Thanks Travis. Honestly I've never researched it enough. It's always seemed to me that I get a slight improvement when I assign individually. Now it's a little less foggy.

 

After several attempts (close to a hundred) at finding a better idle-pc value for a 2691 image, I finally got one where it uses next to zero processor for each instance. It takes a while, but you can get one that is really good. Also, this depends on your processor as well. I use 2 routers per process, and the idle-pc value is set per image. I'm still trying to find out how I can run 10 or more routers and not see any CPU utilization.

 

DelVonte, that's crazy man.  I can run 10 routers with like 6-8% utilization, but once you start throwing up lots of OSPF/BGP/EIGRP/multicast/IPv6 that starts really chewing up CPU cycles.

 

I know. I'm still trying to figure it out. Some of the labs I have created use multiple routing processes. Here is the OSPF Lab for Routing TCP/IP vol 1 Ch.8 Configs 1 - 6:

 

OSPF Topology.JPG

 

Here is the screen shot for task manager:

 

Task_Manager.JPG

 

14 routers..Full OSPF Implementation. Now I have to admit, sometimes it jumps up to 1% CPU for each of these, but its almost always at 0. Can't explain it.

 

*cough*   I think, you may, uhhh, need to let us know that idlepc, yea, and your, um, image.

 

 

For testing and third party verification, of course.

 

 

I made change; I edited my second test.  well, I re-started the same topology and noticed GNS runs at 0-1% of CPU and 51% RAM. Pings HQ to Branch are peaking at 9-10%. (Down from 9 and 13)

 

Further tweaking idle-pc brings CPU usage down to 7-9% when pining end routers (pings go thru MPLS).

 

Although I think the idle-pc value is based on a lot of factors, I'm using c2691-advipservicesk9-mz.124-15.T12. (I don't have access to other IOS as of yet, but so far I haven't had any trouble with the 2691)

 

Anyhow, I spent about 5 hours one night trying to bring my CPU utilization down using resource monitor and tweaking the idle-pc value. When I got it really low, I would add another router, and continue until I maxed out my RAM. Most of the time I would get a CPU utilization of 3%-12% per hypervisor, but I finally found one that was less than 1% no matter how many routers I had. Now I imagine if I exceeded my RAM and started using the page file, the CPU utilization would increase, but I didn't really go that far. I have 6GB of RAM currently, and can run 18 routers. If I need to add more routers I'll go buy some more RAM.

 

I think another thing is what other apps you are running when you set the idle-pc value. For instance, when I set mine I had IE open, anti-virus running, task manager, and resource monitor. Now, I haven't researched or tested this thoroughly (also, someone may have already posted this somewhere), so your mileage may vary, but sometimes if I open a new application, that wasn't open when I set the idle-pc, the CPU utilization goes up on the hypervisors. So, I'm guessing that it takes some sort of snapshot of the environment, and basically thinks its that way all the time, but when something changes, i.e. you open up a new app, it continues to operate the same way, but the CPU has to allocate more resources to keep it functioning at the same level. I really don't know enough about GNS3 to make this assumption, but it seems that way.

 

BTW This is a really good thread Martin.

 

This is a big blow to Sandy Bridge

http://www.pcmag.com/article2/0,2817,2379241,00.asp

 

It's not that big of a deal.  I already know about this and I'm still going to be buying an Asus P67 motherboard; Asus is offering an extended warantee, if the P67 chipset goes bad then I can just take it back and get another.

 

So on a last minute decision I decided to go with AMD.  The results are in!!! SEE ATTACHMENT

 

Martin, if you could send me the topology and configs you used i'll run your network on my machine to see what kind of comparisons we can make here.

 

Here is file https://learningnetwork.cisco.com/docs/DOC-11027

 

Read README file; You might need to edit .net file to meet your GNS settings.

 

Start with MPLS BGP AS-overide with configs .net file (others are backups)

 

Let me know if you have questions or problems

 

I will keep adding configs on the other rotuers to see how many Intel 7 can handle.

 

"added files"

 

With 7 routers, GNS is stable at 0-1% of CPU and 51% RAM. Pings HQ to Branch are peaking at 9-10% and Traceroute reaching 14%

Remember: use source with ping 150.0.2.1 source  150.0.10.1 on HQ

 

Running into a problem opening any of the 3 projects files you sent, see attached screenshot

 

This error is due to differences in settings Hypevisor Manager.  My settings in .net file are [127.0.0.1:xxxx] and yours are [localhost:xxxx]

Fix 1: open .net file and change several instances of 172.0.0.1  to localhost

or open GNS3, Preferences, Dynamips, HyperVisor Manager, IP/Host Bidings <<have several selections in drop-down menu. (see pic)

 

Just tested GNS 7.2 default is localhost; latest version 7.3 has default setting with 127.0.0.1

 

Attached is .net file with localhost

 

Finally got mine to work (I think, it's loading as I type). I cleaned up my pc a couple days ago and inadvertently removed WPCAP, which unbeknown to me was a prerequisite for dynamips.

 

How long does it normally take you to load this lab?

 

First seven routers will not take that long. No need to load all routers. Just load those that are renamed (not Rx).

MPLS runs over EIGRP reflects ISP on routers named ISPx.

Branch and HQ are one company in remote locations.

All other routers do not have configs yet, they were added just for testing.

 

Wow, that topo is a beast!

 

Great Martin, thanks for figuring that out.  I got some studying to do right now, and hopefully later today i'll be able to open your lab up and see what happens.

 

Not really,  just load first 7 PCs. Those are with configs; ISP1 thru 4 and HQ and BRANCH have configs. ISP5 and all Rx don't havee configs.

 

Hey Martin.

 

Been trying for around an hour to load your lab but keep running into error after error. Is there a chance of you "not" sending me an email that "Doesn't" contain your IOS.

 

are you using default settings ?  send me your simple .net  file with 4 routers, I will look at your settings and change my to me yours.

 

What version of GNS3 do you have ? this was build on latest GNS3 0.7.3

 

HI martin,

 

Is there any way out in the GNS3 to save the flash content. Very frustrating for doing voice labs, have to load the CME express every time when starting a new lab. It takes roughly around 30 minutes every time with using the archive command. Any suggestions?

 

Yes, I have vmawre machine with gns3 router and saved Flash with CME  on it in GNS3,

 

First, there is check box automatically clean working directory in Dynamips Preferences (just under Path to working directory box); do NOT clean directory.

 

and, when you create project (or open GNS3), you have NEw Project Window. There is check box named "Save Nvrams and virtual hard drives"  CHECK this one IN.

 

That should save you Flash. Let me know if does not.

 

Wow thanks. I will test it and will give you an update.

 

Hi martin,

 

I have tested saving the flash and it is working perfect.

However i am unable to load my saved configs in to the router. After starting the GNS3, i opened the project that is saved previously and imported the configs, the gns3 console shows importing. Now when i start the router, the router starts as a fresh piece with out any configs. I verified the startup config and it is there. I tried to copy the startup config to running config, it says that startup config is not present.

 

Router#copy startup-config running-config

%% Non-volatile configuration memory invalid or not present

 

After searcing for a while, it is reported that there is a bug in the GNS3 in emulating 3745. It cannot load the saved configs.

http://www.gns3.net/phpBB/topic975.html?sid=cbe333a096235fcc37b0260a85f632d5

 

But some guy tricked and gave the solution it works, for me it gives an error that the processor memory is not enough

 

 

Router#copy startup-config running-config

Destination filename [running-config]?

Warning:  Attempting a memory percentage that does not provide enough Proce

                                                                                                                             y running image.  If you save your running-config now,

                                                       this version of soft

 

1187 bytes copied in 1.432 secs (829 bytes/sec)

RTR#

 

Any ideas? Or how to increase the processor memory ?

 

I use 3725; 3745 in new in 0.7.3.

 

Drag router, do not start, double-click on router, Select your router to see tabs, There is a tab memories and disks tab.

I believe you can increase memory there.

 

if that does not work, try in Advanced Tab; there is exec area where you can increse memory too

 

If anyone is interest I am able to add 20+ routers and still have the CPU under 4% usage.  The IOS I use is c2691-adventerprisek9-mz.124-23  with PC IDLE 0x60246504

 

what is your PC spec ?

PC IDLE is per PC, every Pc has different value.

 

I tried it on both an AMD Phenom X4 955 and Intel Q6660 Quad.  Same PC IDLE value.  If you what you say is true I don't know why its working...

 

Hi martin,

 

Increasing the memory is not working it produces the same error as before, i think it is a bug in GNS3 with 3745 as they mentioned in the gns3  forum.

 

Use 3725 instead ? I only use c3725-adventerprisek9-mz.124 for my labs and that what I used here for GNS testing

 

Ya sure. I will test with that and give you a reply

 

3745 is BAD, Do NOT use it,

I am going to revise my topology and remove or replace  3745 with 3640

 

Why not use the 3725?   That is what I use on my labs for the CCIE in dynamips and any labs I cook up in GNS3, works just fine.  I've gotten my IDLEPC down to a few % per device, it's under 10% with 10 devices, until I start loading up services.  Even then, with the full CCIE lab(routers only), I'm at like 45% on an older Core2Quad Q9550, on stock specs - 2.83Ghz.

 

 

Just a thought.

 

ATTACHED PICS

 

Download to view, they are pretty big

 

MORE ATTACHED PICS

 

Download to view, they are pretty big

 

PICS of 6509s

 

Download to view, they are pretty big

 

Pics are fine but too big; can you save as something else (format). Pics in other formats might be smaller.

 

Joshua, am interested to hear what you think of that case.  I've seen that one and contemplated using it for my next build, that or perhaps a Fractal Design R3.

 

You gotta save them or open them in a new window.

 

Martin wrote:

 

Pics are fine but too big; can you save as something else (format). Pics in other formats might be smaller.

 

The Antec DF-85 is perfect, and I like the fan configuration better than it's direct competition: Cooler Master HAF-X.  Either one would be great though, the HAF has some great features like tooless drive install, but I like the Antec better I think.

 

The Antec comes with all the fans, including 5 120mm fans, and 2 140mm fans.  I will be replacing them eventually with Delta fans though (powerful fans).

 

For a full review/comparison between Antec and Cooler Master, check this out:

http://www.overclock.net/computer-cases/758936-full-tower-atx-battle-antec-df.html

 

Hey Guys, I'm trying to set up my GNS3 lab for this INE lab workbook i have, and the workbook calls for 1841 routers with 2 WIC-1Ts and c1841-adventerprisek9-mz.124-24.T1.bin...

 

Well GNS3 doesn't support 1841s... so I was wondering what would be the best router to use on GSN3 in the 1841s place?

 

Joshua, check out my documents.  You'll find a completed .net for INE in there.    Please let me know if you have any questions.

 

Travis, do you know where I can get the initial configs for the CCNP lab workbook?

 

Does anyone else have an issue with getting cdp packets on the GNS3 virtual routers, from real switches?  Some of them get the cdp packets, and some dont....

 

Conversely, the real switches all receive cdp packets from all the virtual routers...

 

Anyone???

 

I wonder if it has something to do with the fact that I am using USB-to-Ethernet interfaces, on top of that some of the USB ports are sharing the same USB header on the motherboard...

 

Travis, I read somewhere you are using 4port server NICs... from my research, it seems that is the most elegant method.  Those server NICs are expensive though...  looks like I'm buying server NICs...

 

Which ones do you use?

 

Joshua,

         The CDP (Layer 2 protocols) issue depends on your GNS setup as well as your server setup. It can be done. Both directions. As for the 4xFE NICS, you can get old PCI 4xFE nics very cheap on Ebay. They aren't anything cutting edge....

 

chenson, I require pcie 4port NICs.  Besides, PCI uses a shared bus architecture, why would I want to use PCI?

 

CDP is layer 2, really I didn't know that... all sarcasim aside, the cdp problem I am having seems to be part of the usb to ethernet problem I am having...

 

Care to ellaborate on your somewhat cryptic response?

 

Joshua, I'll to answer all of your questions in one post so bear with me......

 

 

No, I haven't experienced any issues with CDP between real switches and virtual routers, in either direction.

 

Yes I am using quad port NICs.  I bought some older ones, one is an ASA 64044, two others are DFE-570s.  Both are no longer made and as such are cheaper than new ones.  I paid $25 for each of two, another ran me $60.

 

USB shouldn't really be causing a problem, are all of your trouble connections over the USB?   Try splitting across a few ports on the mobo if that is an option.  Technically it shouldn't be a problem considering USB was designed to be daisy chained, it may be more due to the drivers you have for those USB to Serial deals running.

 

 

FWIW - I run Ubuntu 10.10 x64, so I can't really help with drivers.  All of my hardware worked as soon as I installed it.  Had some fun with persistent net configs, but got those figured out fairly easily thanks to a rather helpful blogger from the UK also working on this CCIE.

 

 

Edited to add......

 

My .net is for the CCIE workbooks.  I am not sure if they use the same topology or not.  If you bought the materials from INE you should have access to the initial configs for the CCNP labs.  If you didn't, that would explain why you don't have them ;-)

 

Joshua, I run PCI.  Works just fine, you don't need performance in your lab.  You just need it to work.  You will not stress the PCI bus with a little simulated network traffic.  I haven't had any issues with my CCIE lab.

 

Hmmmm... maybe the issue is that I am runnign Win7 x64 then... when I should be running Ubuntu?

 

Joshua,

       I didn't mean to mix answers. The two items are not related.

 

1. PCI 4xFE NICS work fine and are cheap. As Travis mentioned, you are looking for function. Not performance. I use old 4xFEs from Intel and 3com (came out of old PIX 520s and CheckPoint 440 FWs) and they work fine.

 

2. On the CDP stuff. If you are using 4xFE cards and not tunneling (QnQ) or doing USB, then your setup is similar to mine. I am able to pass CDP fine in both directions. My interfaces (in Debian) are all configured promiscuously. The .net file tunnels each ethernet port to a NIO-Linux interface. Works like a champ.

 

LINUX:

iface eth17 inet manual

           up ifconfig $IFACE 0.0.0.0 up

           up ip link set $IFACE promisc on

           down ip link set $IFACE promisc off

           down ifconfig $IFACE down

 

GNS:

[localhost:7201]

    workingdir = /home/foo/GNS3/WORKING

    udp = 10100

    [[7200]]

        image = /home/foo/GNS3/IOS/c7200-jk9o3s-mz.124-25-uncompressed.bin

        idlepc = 0x607a012c

        sparsemem = True

        ghostios = True

    [[ROUTER R-6]]

        console = 2106

        slot0 = C7200-IO-2FE

        f0/0 = nio_linux_eth:eth8

        f0/1 = nio_linux_eth:eth17

        slot2 = PA-4T+

        s2/0 = R-9 s2/0

        s2/1 = R-9 s2/1

        s2/2 = FRSW 6

        x = -361.978255262

        y = -71.1321397568

 

Ah... see this is where I'm lost, I'm farely new to GNS3, and I have no linux experience...  I guess what i need is to know how do I get this lab up from start to finish.

 

I've done some reading about QnQ tunneling (I'M not even sure what QnQ tunneling is, or why it's even needed for cdp), but I thought that was only needed when using a switch and one interface trunking to it...

 

So I'm royally confused...

 

GNS3 maps from routers to switches via Clouds, which you then map to a NIC port.   In dynagen/dynamips pure, you use NIO statements.

 

Both GNS3 and Dynagen have how-to's out there on their forums to explain all of this.  My .net file shows you how to map to NIO interfaces, but again that is Linux specific as they use far simpler interface naming mechanisms.

 

I understand how to connect GNS3 to real devices, but I just can't get them to work right, and it's hard to sift through all the **** on the internet...

 

Joshua,

        GNS3 works great on both Winblows and Linux. Windows seems (to me) to have more quirks but either one is fine for basic labbing. If you are serious about building a dedicated server and switch stack for CCIE level labs, I would recommend Linux. If you are new to Linux but willing to take the jump, try Ubuntu. It's easy and the forums are very helpful. As for GNS3 itself, there are a lot of forums out there with help. Just take it one step at a time.

 

PS: QnQ with GNS to physical switches would only be used if you have a single NIC on your server acting as a trunk. It would go to a "breakout switch" that would have all your lab switches hanging off the back of it. It overcomes the need for a bunch of ports on the server but at the cost of needing an extra switch. And depending on the model of your breakout switch, QnQ treats L2 traffic differently. A 3750 or 4948 (I have tested both) passes L2 flawlessly in both directions with QnQ. A 3550 or 3560 or less (yep, tested them too) won't pass L2 as well.

 

What OS are you running GNS3 on?

 

do I need to be using Linux, or can this be all be done correctly on Win7?

 

Win7 x64

 

chenson wrote:

 

What OS are you running GNS3 on?

 

Chenson, I'm DEAD serious about labbing, this is my career and I want to learn as much as possible.  So you are saying that I need to start using Ubuntu to really have a good lab, correct?

 

 

 

chenson wrote:

 

Joshua,

        GNS3 works great on both Winblows and Linux. Windows seems (to me) to have more quirks but either one is fine for basic labbing. If you are serious about building a dedicated server and switch stack for CCIE level labs, I would recommend Linux. If you are new to Linux but willing to take the jump, try Ubuntu. It's easy and the forums are very helpful. As for GNS3 itself, there are a lot of forums out there with help. Just take it one step at a time.

 

PS: QnQ with GNS to physical switches would only be used if you have a single NIC on your server acting as a trunk. It would go to a "breakout switch" that would have all your lab switches hanging off the back of it. It overcomes the need for a bunch of ports on the server but at the cost of needing an extra switch. And depending on the model of your breakout switch, QnQ treats L2 traffic differently. A 3750 or 4948 (I have tested both) passes L2 flawlessly in both directions with QnQ. A 3550 or 3560 or less (yep, tested them too) won't pass L2 as well.

 

SOoooo..... Unless you are an EXPERT M$ user, I would recommend Ubuntu for a full blown lab for seriousl studies. Again, just an opinion. Windows tends to be somewhat quirky with GNS3 and physical switches and gobs of NICs and stuff. And 64bit on top of that. I run Win7 64bit on the desktop all day. But not for GNS3. To each his own.

 

Your opinion is now my opinion...  So i'm assuming Ubuntu is linux driven.   What is the Ubuntu desktop edition?

 

Joshua, quite honestly there is a learning curve with Linux that is going to require a LOT of investigatinng online and sifting through a lot of stuff - and much of it is hit or miss.  You'll learn a BUNCH just in installing and working with Ubuntu, because it installs as easy as Windows does, but it's also one click away from the shell which is where you want to do most of your learning.  You need to ensure the investment is worth the return for you.  I personally LOVE Linux, and HATE Windows.  I switched and never looked back(although I don't mind Windows 7 much on laptops for when it's required, I'd prefer to run it in VM though).  If you get deep into networking, Linux is a skillset you need to learn anyhow.

 

GNS3 works well enough on Windows, but works really well on Linux - because it is natively coded on Linux.  Same with dynamips/dynagen.

 

 

What I will say - without hesitation - is that you will find MUCH BETTER x64 hardware support under Linux.  Microsoft's model of drivers is garbage and older hardware gets left behind too quickly.

 


Either way we're here to help.

 

Do you recommend a hard drive partitiion to run Ubuntu along side windows?

 

I'm going to be as polite as I can about this - because if you're going to dive into Linux - you need this skillset:  Google.

 

Here is the Ubuntu Desktop Edition: http://www.ubuntu.com/desktop

 

Set your toolbar to use The Google, and every question should first be asked to The Google.  If The Google does not provide you with the wisdom you search for, We can help.

 

 

Ubuntu is Debian-based, and Debian is a linux base architecutre.  Welcome to the Journey.

 

What Travis said.

 

Keep in mind, you have just taken on (in no specific order) GNU/Linux, GNS3, and Cisco studies.

 

On the short term, you are going to feel pain. The forums are your friends. Ubuntu forums. GNS3 forums. Cisco forums.

 

In the long term, it will pay off.

 

You can dual boot, sure.  I still have my desktop set as dual boot, but only because I have been to busy to clean up the ohter hard drive yet.  I suggest you burn the live-cd to a disk, boot off of it, and poke around.  No need to install, but allows you to play around with the OS and get a feel for it.

 

Linux it is then, Travis.  Any books you would recommend?

 

Should I download 32bit version of Ubuntu, or 64bit?

 

 

Travis wrote:

 

Joshua, quite honestly there is a learning curve with Linux that is going to require a LOT of investigatinng online and sifting through a lot of stuff - and much of it is hit or miss.  You'll learn a BUNCH just in installing and working with Ubuntu, because it installs as easy as Windows does, but it's also one click away from the shell which is where you want to do most of your learning.  You need to ensure the investment is worth the return for you.  I personally LOVE Linux, and HATE Windows.  I switched and never looked back(although I don't mind Windows 7 much on laptops for when it's required, I'd prefer to run it in VM though).  If you get deep into networking, Linux is a skillset you need to learn anyhow. 

 

GNS3 works well enough on Windows, but works really well on Linux - because it is natively coded on Linux.  Same with dynamips/dynagen. 

 

 

What I will say - without hesitation - is that you will find MUCH BETTER x64 hardware support under Linux.  Microsoft's model of drivers is garbage and older hardware gets left behind too quickly. 

 


Either way we're here to help.

 

The time spent here online conversing with you, Travis and chenson, has been well worth it, I feel really happy about this information that you have helped me discover.  You have no idea how much this helped me...

 

No problem Josh. Welcome to the next level.

 

Given, you are learning Linux, I would go with the x86 especially for a live CD.  Whilst you may suffer a slight performance hit, you will have a more compatible system short term.  If you're not in a hurry and can wait, Natty Narwhale should be out soon - goes without saying, avoid the Alpha versions already out - there's no point in complicating things.

 

I recommend 64bit, especially with the amount of RAM you'll be using.  While Linux doesn't suffer as badly from memory limitations, 64bit supports massive amounts of memory natively, flawlessly.

 

Also, because I haven't encountered too much software I cannot run in 64bit - and most run fine if you force the architecture in the rare event it pitches a fit.

 

ubuntuforums.org is what I recommend.  No single book is going to make things easier, I haven't ready any books.  I read forums, google searches, online tutorials, etc.

 

Get 64-bit if you have more RAM than 4 GB; 32bit version of Ubuntu, I think supports up to 3 GB (not 100% sure)

 

Do Dual-boot, then you can compare where does GNS3 run better.

 

Joshua & Martin  - here is a link for you to peruse for info about 32bit vs 64bit Ubuntu:   https://help.ubuntu.com/community/32bit_and_64bit

 

With the PAE functionality 32bit Ubuntu can run 4GB no problem.

 

Without kicking off a Linux debate on a Cisco forum, I will say that PAE works great these days. I've run X86 Debian with 16gigs of memory with no issues. However, I would still recommend 64bit to anyone. GNS as well as other packages for what you are doing are all fully supported in 64bit. Plus it's cool.

 

Agreed - I recommend 64bit native to anyone who asks.  I was just making sure the right info about 32bit was out there.

 

LOL, happy 64 bitting!

 

I'm wondering if I can tri-boot.... Win7 - Ubuntu 32bit - Ubuntu 64bit

 

Travis, do your PCI 4-port cards work well with Ubuntu 64bit?

 

Travis, which version of Ubuntu do you use?  Server / Desktop ?

 

Yes, my cards work fine under 64bit.

 

Basically the server edition is a non-GUI LAMP server.  You can install LAMP onto the desktop version, or install the desktop package onto the server version, and come out with similar results.  I've never done too much investigating.  I've run server before though, useful if you need just a server.  As this is also my primary desktop - I run - you guessed it - the desktop edition!

 

With your newer hardware I'd run 64bit and don't look back.

 

So I've been using Ubuntu since last night, very nice I might add...  anyway, I can't seem to find out how to get root access to my file system...  I did some searching but ended up having to go to bed without success, anyway, if you could tell me how, meanwhile I'll keep looking...

 

I am going to assume you are using Gnome, if you aren't, let me know.

 

In a terminal window, sudo is your friend. you can do "sudo nautilus" and it will open a GUI nautilus window(which is your graphical file management system by default under gnome). It will ask for your password - which is for your normal user - and will grant you "root" access.

 

Ubuntu generates a random password for the root account, you don't want to run as root during normal operations.  I have scripts set to run dynamips as root when I do my CCIE labs, but for GNS3, I run it as a normal user, and just ensured I had the proper permissions set on the required directories that GNS3 was using.  FWIW I didn't install it in Opt like most do, I downloaded the full binary and extrated it on my desktop and run it from there.

 

Gotchya... yeah I'm using Gnome for now, I've ordered a book and am also reading "Ubuntu pocket guide and reference."

 

By the way, the Ubuntu one cloud stuff is really cool on a side note.

 

I'm installing Ubuntu 10.10 on as a vmware pc on my work computer right now, and I installed it on a partition on my workhorse PC at home I just built.  I just got access to bring some 4507s home from work for my lab.

 

Message was edited by: Joshua, CCNA

 

so how much RAM is supported by Desktop UBUNTU ?

 

Martin I am not sure about 32bit, but 64-bit supports immense amounts of memory.  The performance is also great with 64-bit, hands down, on almost every benchmark I can find.

 

In Ubuntu, it's 64-bit or bust in my opinion.  You don't run into the same issues that you do when you attempt to run 64-bit Windows OS, no lack of support.  Most programs just plain work!

 

"It seems that the current 32 bit editions of Ubuntu can only take advantage of 3GB (sometimes a little more) of physical memory. "

http://brainstorm.ubuntu.com/item/10892/

 

You want more RAM, you need to do that PAE trick and assuming that your CPU supports PAE, you can do on your PC.

 

Yeah, I believe chenson mentioned PAE above, but that's true of any 32 bit system, only 4GB of mem.

 

Martin, PAE is a waste of time.  64bit is a far better option.

 

Martin,

         Traditionally 32 bit systems are limited to 4gb. Desktop or server. I've run 16gb with PAE enabled on a desktop install with no issues. For my current server with 32gb of memory, I went 64 bit. Mostly because GNS has no issues with 64 bit and the server is dedicated to my CCIE studies. There is a theoretical limit to 64bit memory but I don't remember (or care) what it is as I don't plan on hitting it anytime soon.

 

 

In the end, Travis is right. I wouldn't recommend 32bit to anyone unless they had some very specific 32bit GNU/Linux applications that NEEDED to run natively. Even then, you can run 32 bit libraries in a 64 bit OS.

 

Exactly.

 

 

Plus, when all else fails, dpkg --force-architecture is a beautiful thing.

 

I tried PAE on AMD; something did not take; it booted to previous Kernel version;

 

I Got dual-boot so no big deal, I use Windows mostly.

 

I am greatly enjoying the Linux CLI...  and the GUI to boot!

 

Ahh yes I remember those days.  The honeymoon period really.

 

 

You're going to reach a point where you start to need to do something things that isn't going to be easy to figure out, or takes days to make work just right.  Don't give up.

 

Once you get over that difficulty, you'll find that while yes, there are some things that are not so simple to fix as they are in Windows, YOU CAN ALMOST ALWAYS FIX IT SOMEHOW.  Windows leaves you stuck, up the creek, without a paddle.  The Linux community will more than likely already figured it out, and will gladly tell you how to solve your problem.  The ubuntu community is especially like that.   Linux gives you a lot of control.

 

Then, eventually, you'll find yourself in my shoes, wondering if the next release of Ubuntu will be your last, before you dive in Arch Linux or Gentoo.  That is when you know you're in trouble.  Training wheels come off then.  I'm saving that for after my CCIE is finished.

 

My jump was from Ubuntu to straight Debian. I am spoiled on APT. I have a few hard core buddies that used to Gentoo before the developers started bailing. Most of them moved to ARCH. We also have some CentOS lying around on various platforms. As for your last comment, I've also told myself that AFTER I pass my lab I'll maybe focus on my Linux skills. Maybe the RHCE or something. But really, it would have to be a month after the lab before I start at least cause I'm gonna be sloshed for several weeks straight....

 

PLEASE tell me these will work?

 

http://cgi.ebay.com/A5506-69101-A5506A-PCI-4-PORT-ADAPTER-HP-Servers-/160408296306?pt=COMP_EN_Networking_Components&hash=item2559145b72

 

Hi Joshua,

You have to consider three things in order to zero in on the card.

1) if its a PCI card..( PCI ex is kind of expensive )

2) Does it support dot1q protocol

3) length of the card..

 

I purchased the Adaptec ANA-64044 and since its a server based "PCI"card, its long and the heatsink in the southbridge and Integrated circuits does come in way of the back of the card

just Compare the length of your card with ANA-64044. if its longer than that.. DONT Purchase it

 

I believe ANA-64044 is still a good bet. .

 

I was looking for a more definitive answer, but I value your input... do you have any idea where I can find a datasheet on these old cards?

 

Martin:

 

Okay, I went ahead and bought 2x D-Link DFE-570TX NICs... as you said you had great success with them.

 

I only have two PCI slots, so the next one I buy will have to be a pci-e card.

 

If you have enough USB slots you can also do USB2Ethernet adapters for the other 4 ports.  They're all just NICs in the end.

 

I have my 570s running just fine, as well as ANA-64044 from Adaptec. The 64044 seems pretty expensive now though, I think I only paid $25 for mine.

 

hmmm... I've actually read others having trouble with usb-ethernet though, and I've obviously had my own share of problems.  Maybe it was just windows, who knows.

 

You should look into PCI cards working in PCI-E slots - they should.  I haven't tried it myself but had to do the investigating when I was looking to build a new PC before they pulled the P67 chipsets off the market(I still would have built a PC with them and just replaced the motherboard eventually, oh well).

 

PCI-E quad cards are not cheap from what I've seen. Hopefully you have better luck.

 

Nah... unfortunetly PCI will not work in a pci-e slot.   pci-e will only work withitself in variying sizes, meaning you can put a pci-e 4x card in a 16x slot and the lanes will be negotiated.

 

That is good to know!   I've thankfully decided to finish out my lab on my current PC. I spent a few hours nailing down a better IDLE-PC and that made a world of difference.  I thought my old one was OK, I dropped CPU utilization 30% at full tilt with the new one with the full CCIE lab running.

 

NICE!

 

By the way Travis, I am having an issue opening your .net file you have under your documents for the ine lab...

 

it says that there is an error connecting to server 127.0.0.1:7200... which is wierd because I set up that hypervisor; it's in there...

 

Are you trying to load my .net in GNS3 or dynamips?  I run that with dynamips and dynagen, not GNS3.  I have another .net for GNS3, but quite honestly don't use it.  I find the GUI gets in my way.

 

If you're using GNS3 you probably have to bind GNS3 to 127.0.0.1, set the host port to 7200, and then you'll quite possibly run into issues with there being no geometry information for any of the devices.  I can edit the .net over the weekend if you want one to use with GNS3.

 

you can edit .net file replacing 127.0.0.1:7200 with localhost:7200

 

GNS3...

 

What are the pros and cons using dynamips and dynagen over GNS3?

 

GNS3 = more overhead.  dynamips/dynagen is all CLI, no GUI, no pretty picture, not nearly as easy to change on the fly.  Since my topology does not change though, it does not really matter to me.

 

I use GNS3 when I want to cook up a new topology for a quick lab or to test something, or if I'm building a whole new topology.

 

Okay good, because I have enough on my plate as it is, hehe.

 

I used dynamips way back when... I was able to get it working using an IOS image, but I never pursured it further, I didn't know where to look to get help with it.

 

Actually it was while I was doing research on how to study for my ccna.... over a year ago.  At the time I was struggling trying to get my CCNA as fast as possible because I was tired of doing mind numbing jobs.

 

How do I console into a real switch/router using ubuntu?

 

I believe their is a putty for linux in the ubuntu store.

 

minicom is your friend.   sudo apt-get install minicom.

 

 

For now, that is your best bet.  Direct access in a terminal window.

 

Travis, I got it and started using it before you posted the answer... I'M LEARNING!

 

Once you start getting comfortable with the CLI, start learning RegEx, as it can be heavily leveraged directly on the CLI in commands.  For example. I have a few commmands that I run every time before I start a new lab, and it basically renames all of the initial configs, runs through the router configs and fixes serial interface numbers for dynamips, and viola I am ready to go.  5 seconds instead of what could easily take 5-10 minutes for each lab.

 

I remember my first Linux class in 90s. We had to learn to do things from terminal window.  Mr. Teacher did not want us to use GUI.  Few years later, he was forced to teach more in GUI as he had problems remembering commands - older guy.

 

and technology has changed; who has time to learn all Linux commnads; everyone likes gui way to do things.

 

There is a source code for Putty for Linux/Unix. scroll down to source code:

 

http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

 

more overhead - yes but computers are really fast today with fancy graphics card. GUI GNS3 is same as CMD-based Dynapis.dynagen, performance wise.

 

before you buy special multi-port NIC adapter, you can check if there are drivers for Linux.

Otherwise, you can build your own drivers for your Linux machine.

 

Travis just likes to work harder to learn more... at least that would be the only reason I used dynamips without GNS3

 

Catching up on your posts? 

 

 

 

 

Martin wrote:

 

before you buy special multi-port NIC adapter, you can check if there are drivers for Linux.

Otherwise, you can build your own drivers for your Linux machine.

 

yep, a bit,  and I learned Red Hat, there was no Ubuntu back then. Load VMware and load Fedora (name changed) to

see how different is one from another.

 

I like Fedora because of more software is avaiable and more in RPM format where you just install it.

 

Well, does not look good for Ubuntu; same topology, same machine; Comparing to my first entry on page 1 (Win7 runs 24 routers):

Ubuntu with no configs and just 7 routers running empty, Ubuntu is worst than Win 7;

 

Ubuntu.7.router.no.conifgs.png

Will play with idle-pc to bring it down.

 

which is better performance wise between windows and gns3?

 

you can still try dynagen by yourself (no GUI GNS3).

what a pain was setting up a lab,  you had to create your own .net file !

Forget about it ! use GUI GNS3.

 

OK, I found that running NOTHING, Ubuntu CPU usage is above normal for some reason ?

WHY ? Ubuntu 10.10 with generic kernel 2.6.35-25

Screenshot-2.png

 

Martin,

Do you have a daemon running on the second virtual desktop?

 

Changed above pic; it shows now after reboot, should not be CPUs at 0 %

Screenshot-4.png

Is there a special Intel driver for Kernel to improve performance ? Or do we have to build kernel for Intel 7 ?

 

Yeah, check your processes

 

use the following command line for better process information:

 

top

 

type q to exit and retain the terminal window

 

Well, I'll probably be responding to a few posts here.....

 

Reason I do dynamips/dynagen is because it is a static topology - it never changes.  I learned dynamips before GNS3 was even around - so no "extra learning" involved.  GNS3 used to be buggy and unpredictable, so when I do something simple, dynamips/dynagen is much easier.

 

I use GNS3 all the time, but only for topologies I build from scratch or for simple testing.  I have little need for the diagram on GNS3 since I already have the INE diagram and I write my own for each lab.  The GNS3 window will not be there in the lab so I don't bother with it during my studies.

 

Martin, you've discovered something that bugs the *(#&% out of me - the System Monitor in Ubuntu is a resource hog.  It will inflate CPU utilization just by turning it on.

 

You can see this by launching a terminal window as Joshua said, execute "top", then launch System Monitor.  You'll see the utilization climb, and then drop again when you close SysMon.

 

I just use "top" when I do idle-pc calculations.  I also no longer use Ubuntu because it performs better - but simply because I like ubuntu THAT much more than any flavor of Windows.

 

Are you saying that you boot straight to the command line, or that you just don't actively use the GUI?

 

I am saying that when I do my CCIE labs, I don't use GNS3 at all.

 

I start dynamips via a very simple script I wrote(it basically clears any existing dynamips instances, sets the proper directory, and launches dynamips), then I start load the .net file via dynagen under a different terminal window(they're both tabs in the same physical window, but different terminal session).

 

I run the lab in dynagen, start/stop, etc.  It's terribly straight forward and simple really.

 

 

Now, if I misunderstood your question, and you were asking about the Linux GUI - well I am not crazy.  I run Xwindows/Gnome of course.  Tough to use Chrome/Rhythmbox in straight CLI!!!  Gotta have music while I study, helps drown out the noises around my house.

 

Yep, It appears a bit better with Top executed; no time to do GNS testing today, maybe tomorrow ?

Screenshot-5.png

 

Travis,

 

Remember how you said you would convert the CCNP INE topology for me to use with GNS3?  Is it possible you could still do that?

 

Well, I just have the CCIE INE topology - not sure if that is the same thing or not?  I can certainly take what I have and do a mash-up with their GNS3 topology.

 

If you want to send me a diagram from the CCNP materials I can certainly make it happen if you want.

 

I believe it's very similar to the CCIE topology.  Could you please give me your email address and i'll send you the entire workbook

 

I'm having trouble finding a good tftp server for ubuntu... and I don't know how to install/use the non-gui ones?

 

I OWE YOU BIG TIME, TRAVIS!

 

That was a great learning experience.

 

Glad to help!  I'll be interested to see how it works out when you plug the real switches in.

 

Wow this thread is so huge. Gns3 testing in progress - Novel   Martin and et al

 

I know and I am half way done thru my testing:

Trying to get Ubuntu on this machine and run same topo so that we can compare it to Win 7

 

Joshua: I had similar issues Windows 7 x64, routers sometimes not able to communicate properly. The fix for me was to delete the router, remake it, and then ensure the Fa0/1 or whatever interfaces I was using had speed 100 and duplex full set. This fixed the connectivity issues I saw. Also for telnet, why download putty for Ubuntu when you just open a console and type telnet 127.0.0.01 port# and there you have it. For tftp server, first google hit is promising: http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch16_:_Telnet,_TFTP,_and_xinetd#Installing_The_TFTP_Server_Software

 

I see this post a lot but never got around to checking it out. What is trying to be accomplished?

 

A tip for Ubuntu - Disable the system monitor proccess. It usually eats up your entire CPU for no good reason at all.

 

To Mig:

 

Use the 3725 router on Win7 x64. Been using it for a month now without any problems at all. Be sure to extract your IOS as this solves a lot of problems.

 

It went from a specific goal of testing to a general sprawling conversation about GNS3 and dynamips/dynagen.

 

Hey Travis, I was getting errors when using 127.0.0.1 instead of localhost in the configuration of GNS3... these errors came up when trying to connect to a cloud...

 

Interesting enough, when I changed it back to localhost, everything worked perfectly.

 

Just thought you should know.

 

Another Ubuntu question for you, the following link is for reference:

 

http://ubuntuforums.org/showthread.php?t=1630358&page=6

 

I'm trying to figure out how to get my Linksys WUSB600Nv2 wireless adapter to work and I haven't found a solution yet, thought you might want to take a look at your convenience, see if you had any insight

 

Weird, I run 127.0.0.1 without issues.  Haven't tried using clouds yet.

 

 

As far as the wireless problem - the forum you are on is the best bet.  I've not tried mucking with wireless on Ubuntu in a while, all my hardware has worked out of the box.

 

If I Disable the system monitor proccess, how can I measure performance running GNS3.

 

can I do it remotly ?

 

Just grab a stop watch and time how long a router takes to boot to the CLI.

 

You know, I was just thinking... Windows method of tracking the cpu usage uses up processing power, just like any other application...

 

I bet windows accounts for that and takes it out of the equation when displaying cpu usage.

 

You could get an average of cpu utilization using top, then subtract that from your GNS3 tests.

 

This can achieved in windows by using the program pmon.exe.

 

Hi Travis,

after reading this thread, i've also installed x64 Ubuntu but there is one issue.

 

the multiport NIC (Adaptec ANA-64044 is detected fine by Ubuntu, however whenever i connect the LAN cable, it does not do anything.  All the cards work fine under win7.

do i have to install drivers for the card or the one that Ubuntu installed is fine.

 

Kindly reply.

 

Thanks

Mohit

 

If your NIC is recognized by Ubuntu it should work just fine.  How are you trying to communicate across it?  Have you tied it into a .net with routers and a physical switch? Have you tried putting an IP on it just to test it?

 

Well, im not infornt of my comp right now. cable modem was connected to the onboard NIC and was working fine. when i tried connecting the same cable to any 1 of the 12ports, Ubuntu would not detect any network connection.

i tried troubleshooting that issue for a while but to no avail. i have not yet started building the lab under ubuntu.

the 12 ports show up under System--network connection and also on the drop down at the status bar at the top.

 

Ensure your interface is set for DHCP and is not turned off.  Just becase it is there does not mean it is enabled.

 

sudo ifconfig eth# up

 

Replace # with your interface number.

 

Thanks Travis ill do and let you know

 

Hi Chenson,

I am interested in knowing How we can hardwire GNS3 to physical switches on GNU/Linux.

Can you please send me through the details.

Thanks.

 

regards,

Sundaram

 

Hello Sundaram!

 

There are a lot of HOWTOs for GNS3. You need a loopback- or tun- or tap-interface in your client. when you start GNS3 as root, you can attach the interface to a "cloud". then you need to allow ip-forwarding in your client and maybe activate NAT. from then your virtual router can speak through your host-system. it's quite easy.

 

Hi All,

 

I had a question on how to open console sessions in tabs instead of individual windows in UBUNTU, but then i saw Joshua attached pic https://learningnetwork.cisco.com/servlet/JiveServlet/download/130108-35002/Screenshot.png;

he was using "konsole" instead of "gnome terminal" which is not installed by default because its KDE not Gnome.

 

All u need is to install the "konsole" package, set GNS3 to use it and  it will work like a charm !!

Hope it would help !!

 

gnome-terminal does tabs as well - I use them all the time for non-lab related purposes.  In a few days I'm going to be able to talk about some software I've been alpha testing for a certain company that will give you yet another option in this specific arena.

 

sure it does tabs but for some reason it didnt work with GNS3, i tried [ -T , --new-tab, multi-gnome-terminal] in various combinations but with no use.

i do really hope that someday there will be a SecureCRT for Linux as theres one for MAC!!

 

waiting for your tests feedback !!

 

there is no Putty manager for Linux!  that is what I use on Windows; works great !

Putty M. is designed for MS Windows as it requires the .NET 2.0.

 

here are instructions for Konsole

 

https://learningnetwork.cisco.com/docs/DOC-11206

 

If you want to use secure CRT with a linux based GNS3 client, the only option is to connect from a windows machine. Pretty simple to do, just set the IP to the server and all the port numbers are the same as you normally use.

 

If the machine running GNS3 is a dedicated GNS3 processing box, there is a much better way to do it from your windows machine.

 

- Open multiple hypervisor instances on the Ubuntu machine (One on each port, as many as you require)

- On the windows machine, open GNS3

- Under "IOS Images & Hypervisors/Hypervisors" create configs for each remote hypervisor on the ubuntu server

- Under "OS Images & Hypervisors/IOS Images" create a single image entry and allow it to use the hypervisor manager

 

Now when you drag routers into GNS3 on your windows machine, they will be processed on the Ubuntu machine. This allows you to store your configs locally on Windows, and still use SecureCRT with local addresses (127.0.0.1).

 

[edit]

 

You can set Ubuntu to log in automatically on boot, and to open all the hypervisor instances. This allows you to just power on your server and not do anything manually to have GNS3 processing available. This method scales to multiple servers too, just add the configs for each remote server and GNS3 will load balance automatically.

 

Hello Joshua, would you kindly share me what AMD Phenom CPU and Montherboard you have finally bought? How has your PC been performing? Thanks!

 

Is there a way to test performance on PC running Ubuntu remotely ?

 

For anyone looking to remote into an Ubuntu box, look no further than NXServer.  I have not tried their new 4.x offering, but their current stuff is amazing and I can't imagine how the new features with 4.x will help out.

 

 

Also, I do believe VanDyke began their Beta for SecureCRT for Linux today.  I've been participating in their Alpha testing for a few months now, having SecureCRT finally on Linux has made life incredibly easy.  If nothing else, the console connectivity support has been great.  For anyone who has used minicom knows how lacking it is in features!

 

remoting would be nice.  Currently I'm using usb and DVI extenders to go from my garage to my upstairs room, as those C4500 swtiches are loud as @#$%

 

Hey Nataniel,

 

I got an AMD Phenom II X6 1090T w/ an Asus Crosshair IV Extreme motherboard.  It's a beast, so far I have been able to start up 8 routers at the same time, only taking about 3 seconds at 100% cpu usage.  I haven't actually tested anymore than that as I have no need to.

 

I would have went with sandy bridge as the scores don't lie, but I'm not waiting until "sometime" in April; cisco studies can't wait!

 

 

Nataniel wrote:

 

Hello Joshua, would you kindly share me what AMD Phenom CPU and Montherboard you have finally bought? How has your PC been performing? Thanks!

 

Oh, and it's overclocked to 4Ghz accross all 6 cores, perfectly stable.

 

 

I've seen videos with Sandy Bridge being overclocked to 5Ghz with high temps around 60 degrees C and up, not recommended, but videos prooved it to be stable with 24 hours of stress testing.

 

Keep in mind, if you are thinking of overclocking, you need to make sure you buy a good cooling solution.  I'm currently using a Corssair H70 closed loop liquid cooler, and it works great.  It comes with dual 120mm deep fans for a push pull configuration running at around 13xx rpm, but I'm planning on buying some fans that run at around 3xxx rpms.

 

Sorry Travis. I did try to move the discussion over to PM.

 

I have removed all the comments from the discussion.

 

Apologies,

James

 

I saw a message from Keith bogart about what people are using for their studies

 

This thread has been a HUGE hit as most of us use GNS3 for at least ROUTE exam..ithink..and i wish cisco can make some plans for people who want to study on real routers somthing.. economical from their cloud??

 

If Cisco is on their game like they usually are - I would imagine they are well ahead of you simplyccna!  

 

Would be great if there was an official study path from Cisco that allowed students to not technically break the law .

 

Thanks Joshua, I think I might go for the same CPU as you have: Phenom II x6 1090T. I might consider 8G in RAM. If I send you a Dynamips topology, would you be able to test it for me? I want to make sure it will work in AMD since I already know it works in Intel i7. Thanks!

 

Sure thing, you should be able to zip it up and attach it.  I'll send you a full part list also, so you can use it as a reference if needed, and pick and choose what you want and what you don't want.

 

people, i guess reload does not work for gns3,router goes nuts

 

Ya, they should try and get that fixed for next version of GNS3/Dynamips , I'd love to be able to reload routers after setting configuration register, etc. or watch other routers react to a single router rebooting.

 

If it only affects Windows version, let me know.

 

Happy to help with the testing too if you like. I'm also running 8GB of RAM with an i5 so it should give you a good contrast between the two CPU's.

 

8GB is quite plenty for GNS3 anyhow, with the CPU usually giving out before you fill the memory.If you keep your current pc, you could use it to give you additional GNS3 processing power when you need it (Through remote hypervisors).

 

Nataniel wrote:

 

Thanks Joshua, I think I might go for the same CPU as you have: Phenom II x6 1090T. I might consider 8G in RAM. If I send you a Dynamips topology, would you be able to test it for me? I want to make sure it will work in AMD since I already know it works in Intel i7. Thanks!

 

While it isn't as easy as just reloading, you can start/stop the device.  Just need to make sure you save the config to a file and point the device to boot off of that config.

 

I am just loving these discussions.

 

I started to use GNS - some time now, but quickly realized that CPU and RAM is King.   I will be using the recommendation regarding Windows 7 ... Readyboast to assist in the process of building more complex GNS3 nets.

 

Blessings.

 

hello

when i try to console to switches only, they disappear (IEWB topology)

how can i overcome this ?

how bad is fluctuating cpu between 10 and 40 percents over 6 hours ? -)

 

what do you mean "they disappear" ?  you are talking about routers with switching module, right ?

do not use 3725 with switching modules, there is a bug for those in GNS3;

use 3640 with switching modules instead.

 

Hello

yes routers with switching modules.when i try to open .net file with 3640 it says that could not find 3725 image .

is there a way to load switches with 3640 after opening .net file with 3725?-) i doubt it

i guess u meant to build toplogy on my own,with 3640 (?)

 

you have to edit your .net file in Notepad. Either you do not have 3725 or 3640 IOSs or whatever IOS they used in their topo, GNS3 is trying to find and use it.

 

Open .net file and edit appropiatly pointing to your 3725 or 3640 location (c:\cisco images\..).

 

GNS3 sometimes crashes when you try to add new router after opening somebody's else topology.

You can try adding routers by writing them in .net file or just re-build topology from scratch.

 

tried different 3725s,same thing,console freezes for switching modules

for 3640 gives this message [attemp to connecto to non-existent interface in slot 0 on device R6]

 

below is net file

 

autostart = false

[localhost:7200]

    workingdir = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2_working

    udp = 10000

    [[3640]]

        image = E:\CISCO\ios\c3640-jk9o3s-mz.124-16a.bin

        ram = 144

        ghostios = True

 

    sparsemem = True

    disk0 = 64

 

    disk1 = 0

 

        idlepc = 0x605ac7b8

    [[ROUTER R4]]

        model = 3640

        console = 2004

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r4.txt

        s0/0 = FRSW 4

        s0/1 = R5 s0/1

        f0/0 = SW2 f1/4

        f0/1 = SW4 f1/4

        x = 451.583361823

        y = -263.209861761

    [[ROUTER R5]]

        model = 3640

        console = 2005

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r5.txt

        s0/0 = FRSW 5

        s0/1 = R4 s0/1

        f0/0 = SW1 f1/5

        f0/1 = SW3 f1/5

        x = 540.954456933

        y = -75.4380480372

    [[ROUTER R6]]

        model = 3640

        console = 2006

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r6.txt

        s0/0 = FRSW 6

        f0/0 = SW2 f1/6

        f0/1 = SW4 f1/6

        x = 297.266911411

        y = -45.8897546446

    [[ROUTER R1]]

        model = 3640

        console = 2001

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r1.txt

        s0/0 = FRSW 1

        s0/1 = R3 s1/2

        f0/0 = SW1 f1/1

        x = 122.029374331

        y = -160.773603083

    [[ROUTER R2]]

        model = 3640

        console = 2002

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r2.txt

        s0/0 = FRSW 2

        s0/1 = R3 s1/3

        f0/0 = SW2 f1/2

        x = -190.880501242

        y = -13.8628391382

    [[ROUTER R3]]

        model = 3640

        console = 2003

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\r3.txt

        f0/0 = SW1 f1/3

        f0/1 = SW3 f1/3

        slot1 = NM-4T

        s1/0 = FRSW 3

        s1/1 = FRSW 13

        s1/2 = R1 s0/1

        s1/3 = R2 s0/1

        x = -48.9899410511

        y = -87.3015509545

 

[localhost:7201]

    workingdir = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_working

    udp = 10200

    [[3640]]

        image = E:\CISCO\ios\c3640-jk9o3s-mz.124-16a.bin

        ram = 128

        ghostios = True

 

    sparsemem = True

    disk0 = 64

 

    disk1 = 0

 

        idlepc = 0x605ac7b8

    [[FRSW FRSW]]

        1:102 = 2:201

        1:103 = 3:301

        1:104 = 4:401

        1:105 = 5:501

        1:113 = 13:311

        2:201 = 1:102

        2:203 = 3:302

        2:204 = 4:402

        2:205 = 5:502

        2:213 = 13:312

        3:301 = 1:103

        3:302 = 2:203

        3:304 = 4:403

        3:305 = 5:503

        4:401 = 1:104

        4:402 = 2:204

        4:403 = 3:304

        4:405 = 5:504

        4:413 = 13:314

        5:501 = 1:105

        5:502 = 2:205

        5:503 = 3:305

        5:504 = 4:405

        5:513 = 13:315

        6:51 = 21:51

        6:100 = 21:100

        6:101 = 21:101

        6:201 = 21:201

        6:301 = 21:301

        6:401 = 21:401

        13:311 = 1:113

        13:312 = 2:213

        13:314 = 4:413

        13:315 = 5:513

        21:51 = 6:51

        21:100 = 6:100

        21:101 = 6:101

        21:201 = 6:201

        21:301 = 6:301

        21:401 = 6:401

        x = 130.439669603

        y = -16.0341745819

 

    [[ROUTER SW1]]

        model = 3640

        console = 2007

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\sw1.txt

        slot1 = NM-16ESW

        f1/1 = R1 f0/0

        f1/3 = R3 f0/0

        f1/5 = R5 f0/0

        f1/7 = SW2 f1/7

        f1/8 = SW2 f1/8

        f1/9 = SW2 f1/9

        f1/10 = SW3 f1/7

        f1/11 = SW3 f1/8

        f1/12 = SW3 f1/9

        f1/13 = SW4 f1/7

        f1/14 = SW4 f1/8

        f1/15 = SW4 f1/9

        x = 181.132747675

        y = -297.546787157

    [[ROUTER SW3]]

        model = 3640

        console = 2009

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\sw3.txt

        slot1 = NM-16ESW

        f1/0 = BB3 f0/0

        f1/3 = R3 f0/1

        f1/5 = R5 f0/1

        f1/7 = SW1 f1/10

        f1/8 = SW1 f1/11

        f1/9 = SW1 f1/12

        f1/10 = SW2 f1/10

        f1/11 = SW2 f1/11

        f1/12 = SW2 f1/12

        f1/13 = SW4 f1/13

        f1/14 = SW4 f1/14

        f1/15 = SW4 f1/15

        x = 194.808844763

        y = -430.131197277

 

 

    [[ROUTER SW2]]

        model = 3640

        console = 2008

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\sw2.txt

        slot1 = NM-16ESW

        f1/0 = BB2 f0/0

        f1/2 = R2 f0/0

        f1/4 = R4 f0/0

        f1/6 = R6 f0/0

        f1/7 = SW1 f1/7

        f1/8 = SW1 f1/8

        f1/9 = SW1 f1/9

        f1/10 = SW3 f1/10

        f1/11 = SW3 f1/11

        f1/12 = SW3 f1/12

        f1/13 = SW4 f1/10

        f1/14 = SW4 f1/11

        f1/15 = SW4 f1/12

        x = -99.2014518789

        y = -430.291462253

 

    [[ROUTER SW4]]

        model = 3640

        console = 2010

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\sw4.txt

        slot1 = NM-16ESW

        f1/4 = R4 f0/1

        f1/6 = R6 f0/1

        f1/7 = SW1 f1/13

        f1/8 = SW1 f1/14

        f1/9 = SW1 f1/15

        f1/10 = SW2 f1/13

        f1/11 = SW2 f1/14

        f1/12 = SW2 f1/15

        f1/13 = SW3 f1/13

        f1/14 = SW3 f1/14

        f1/15 = SW3 f1/15

        x = -96.8679534207

        y = -295.635392558

 

 

[localhost:7202]

    workingdir = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_working

    udp = 10300

    [[3640]]

        image = E:\CISCO\ios\c3640-jk9o3s-mz.124-16a.bin

        ram = 128

        ghostios = True

 

    sparsemem = True

    disk0 = 64

 

    disk1 = 0

 

        idlepc = 0x605ac7b8

 

    [[ROUTER BB1]]

        model = 3640

        console = 2011

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\bb1.txt

        slot1 = NM-4T

        s1/0 = BB3 s1/0

        s1/1 = FRSW 21

        x = 295.488995591

        y = 52.5135724493

 

    [[ROUTER BB2]]

        model = 3640

        console = 2012

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\bb2.txt

        f0/0 = SW2 f1/0

        x = -307.528038681

        y = -8.27771801694

 

    [[ROUTER BB3]]

        model = 3640

        console = 2013

        cnfg = E:\CISCO\ccie rs\LAB\GNS3 LAB IMPORTANT\VOL2D\LAB2\LAB2_configs\bb3.txt

        f0/0 = SW3 f1/0

        slot1 = NM-4T

        s1/0 = BB1 s1/0

        x = 645.76579582

        y = -254.080692793

 

[GNS3-DATA]

    configs = SM_configs

    workdir = SM_working

    m11 = 0.5

    m22 = 0.5

 

Fixing this might take you a while:

I loaded your file and got many errors; you have to edit .net file one by one to eliminate errors. I use UE Ultra studio (portable version) but you can use notepad;

 

Load topology, start GNS3; Copy all errors from GNS console window to notepad; read and fix errors one by one:

example:

*** Warning:  Connecting R4 f0/0 to SW2 f1/4 resulted in:

    attempt to connect to non-existent interface in slot 0 on device R4

 

*** Warning:  Connecting R4 f0/1 to SW4 f1/4 resulted in:

    attempt to connect to non-existent interface in slot 0 on device R4

 

it means that you are missing Fast Ethernet module on router 4 in slot 0. so add module Fast Ethernet into slot 0 on R4.

However, your R4 is 3640 router which has 4 Ethernet ports but not fast Ethernet with 2 ports.


Only Router 3725 comes with built in 2 fast Ethernet ports; then you can add 2 WIC into WAN serial slots and NM-16ESW in Slot 1.

So I think you must replace 3640 with 3725 to fix isses you have.

one of features of new 3725 and GNS3 is auto connect (insert) module, so you don't have to add wic manually.

 

Editing examples:

 

[[ROUTER R4]]

        model = 3640

        console = 2004

        cnfg = E:\CISCO\......\r4.txt

slot0 = NM-4E

        s0/0 = FRSW 4

        s0/1 = R5 s0/1

        f0/0 = SW2 f1/4

        f0/1 = SW4 f1/4

------------------------

 

[[ROUTER R2]]

        model = 3725

        console = 2014

        wic0/0 = WIC-2T

        slot1 = NM-16ESW

-------------------------

You must start from top of errors (1st Warning) and keep going down; saving files, and trying open them to see your progress.

as previous edit should fix next few errors as well.

 

I suggest you start with Original file; load it; copy errors; fix open by one; save your file AS adding number so you can revise those as necessary.

 

yep; I just tested. Replace 3640 with 3725 and point IOS location to correct directory to get your topo:

your topo.png

 

Try loading configurations

 

I got error running  Switch

 

 

%ALIGN-1-FATAL: Corrupted program counter 00:00:14 UTC Fri Mar 1 2002
pc=0xBFC011A0 , ra=0xBFC011A0 , sp=0x652E8228

Router will keep running this messeages;

 

 

see If you can start router without config and then add your config to get rid of that error.

 

this error comes up with auto start up with configs

 

start router without any configs, then load them in

 

yes, it works fine now, thanks

 

I am running same topology (from page 1) in Ubuntu after applying some updates and tweaks to OS.

Results are not looking good for Ubuntu as it does not appear to be better than Win 7 wne you run GNS3.

Since there is no good method to measure performance; I will keep adding devices and configs until performance degrades significantly.

 

stay tune

 

GNS3 version 0.7.4 has been released !

 

http://gns3.net/news

 

Anyone ever use a Qemu host?  I can't get Gns3 to run Qemu, can someone help me with the preferences?

 

Qemu host is not better than VPCS, which requires less resources like memory.

I posted examples of those somewhere ....

 

Well, I'm trying to use it with GNS3 though, through linux...  Any ideas?

 

from the VPCS site; it runs on Linux, tested on Ubuntu:

vpcs.exe is windows program, only udp mode.

Under linux or OSX, maybe you need chmod +x vpcs.

 

http://www.freecode.com.cn/doku.php?id=wiki:vpcs

 

Qemu is tricky but it works; I did it, search for videos on how to ; if I find my instructions, I will post them here.

 

I figured it out!  There is actually a bug in the gns3 package, you can solve it by downloading the source files and extracting the qemuwrapper folder, and change paths to that in gns3 preferences...

 

once that's done, qemu and qemu-img paths I believe can just be qemu, and qemu-img, as they can be run from any folder... can't remember the technical name for that type of command.

 

Just incase though, I changed the paths for qemu and qemu-img to the full path, whcih is /usr/bin/qemu and /usr/bin/qemu-img

 

Qemu Settings

 

Screenshot-1.pngqemu settings

 

See I knew you would;

now play with it for a while and then tell us benefits over simple VPCS ?

 

Joshua, sorry for not being able to help more last night.  Makes sense why I never saw issues with tinycore though when I tried it later in the evening - I had already re-compiled qemu for ASA emulation and my qemu settings were already tweaked because of that.

 

Glad you figured it out!

 

Finally, I can connect to CLN....geez man.

 

Anyway, so yeah I found out how to make it work... somewhat... Let me explain.  Got Qemu to emulate tinycore linux, but when I connect it to a router, and configure the network settings for both the router and the qemu host, I can't ping between them...  so basically worthless.  It was more of a test anyway, not something I need right now.

 

But if someone can try it for themselves on Ubuntu and find a way to solve the problem, please let me know.

 

Qemu screwed up my GNS3 somehow... now whenever I select by left clicking and dragging, Ubuntu restarts back to the login screen, and when I log back in, it seems a different version of Ubuntu loads up (different looking, older style or something)....

 

BLASTED QEMU!

 

This brings up a point I'd like to make, always back up your stuff...  Fortunetly for me, I do... I use Ubuntu One, which synchronizes all my stuff automatically to my personal cloud.

 

$See Screenshot

 

Just thought I'd show off a little GNS3 lab I created.  It's actually running at 8% right now, with EIGRP configured.  You can see the little cpu monitor on the top panel, blue showing usage.  It's actually higher right now because I am also running pandora.

 

maybe my unusually high CPU usage in Ubuntu is due to version of Ubuntu (I got latest one), what is yours?

 

How is QEMU vs. VPCS ? Which one runs better ?

 

I haven't used VPCS yet... and frankly I am afraid to use it, as QEMU already killed my computer.

 

I have the latest version of Ubuntu as well, Martin, 10.10 pae.

 

I was using 64bit, but I decided to reinstall Ubuntu on it's partition as Qemu really messed up GNS3 and searching to fix the problem I had no success, therefore reinstallation seemed to be the right choice.

 

What kind of PC are you using.

 

Oh, forgot to mention that I installed pae by accident...

 

my AMD 3 GHz with 2 GB RAM does not show Ubuntu runs GNS3 better than Win XP;

and intel I7 core with 4 GB (from 1st page) also does not show GNS3 runs better on Ubutnu;

 

but I am not done testing yet and I think that software to measure CPU performance on Ubuntu is "false" or fake.

I did try run it with top command; that did help a bit.

I will run full test later.

 

Yeah, I don't know why it seems Ubuntu takes up more processor...

 

I think you'll find that as everyone writes their own routines to monitor CPU utilization, some are more CPU intensive than others.  It is up to the individual to ensure their code is efficient and clean.  With that said, I've made the remark more than once in this thread I do believe - with Windows 7 x64, I don't see a huge performance difference between it and Ubuntu 10.10 x64.

 

What I do see, is ease of us with Ubuntu.  Being able to write scripts and run them at CLI and edit mass amounts of files, isolate labs to specific folders, clean process housekeeping, and the ability to automate several processes into a single command - make it easy for me to justify the use of Linux.

 

I guess I could learn PowerShell2 to gain much of that functionality in Windows, but that is a lot of effort to put in when I'm already familiar enough with Linux tools.

 

 

 

It is up to each to pick their poison - for some it is too much effort to learn Linux if they would only use it for GNS3.  Windows 7 is fine in that case, just expect some caveats to contend with.

 

HI Travis/Martin-

 

i am facing a strange issue with windows xp wherein each instance of 2691 router is comsuming a  flat 256 MB of RAM despite the fact that the allocated memory to that image is only 128 MB.

 

The same image under windows 7 x32 bit consumes only 128-135 MB of RAM and the i just ran 20 routers and the total RAM consumed by them was just 1909 MB and just 2% CPU usage. ofcourse Win7 mem managment was doing its job efficiently. is there any reason why the same image is consuming 256 MB in XP.

 

Finally i have ubuntu 10.10 installed as well and there seems to be no performace gain. on runniing just one router with idle PC value calculated, the amount of CPU usage was 11%. with 10 instances it was pegged at 72%. i tried calculating idle PC values many time but to no avail.

 

Interesting; I also got 218,360K showing in the Mem usage under dynamips process in XP Task manager.

and router is set to 128 MB

Cisco 2691 (R7000) processor (revision 0.1) with 124928K/6144K bytes of memory.

 

It Must be a XP thing and how XP manages memory. Adding 2nd same router with 128 MB, and total memory is 295,512K

You have that Enable Sparse Memory Support check in under GNS Preferences, right ?

 

and on Win 7, I got one router with 128 MB using 65,568 K memory; very low; that is very low !!!

 

adding not about Win7

 

I can't stand windows in use for GNS3...  thank you Linux.

 

Travis,

 

In regards to the new version of Ubuntu, do you just not like the GUI?

 

I have downloaded the 11.04 beta, I am going to give it a shot. I do not like what I see in the screenshots though. Too much emphasis placed on social networking, and the Unity desktop environment does not impress me.  We shall see how it goes, but I did try out Fedora 15 beta today and I was really impressed with Gnome3. I will post up with my impressions.

 

I will have to look into these new OSs.  Don't have time right now though.

 

Well, 11.04 is just the next release of Ubuntu, they follow a pretty straightforward 2x a year, April/October release schedule. This is one reason why early on I adopted a seperate /home partition, so I can keep installing fresh OS's on top of themselves without losing too much.  You always get an application or two that refuses to install in /home and then you have to reinstall, but that is typically a minor issue(except for VMware, that is a time consumer).

 

Fedora is the individual version of Redhat, it's like the desktop open-source equivalent.  No proprietary packages included, they're all sanitized, just like CentOS(which is also built on Redhat, but CentOS is more server-centric IMHO).

 

In any event, I've been wanting a more polished, leaner Linux distro since 10.04 came out, I think it's time I finally venture out and find one.  And before anyone mentions Gentoo, I have a day job and a family so I don't have hours upon hours to learn that, lol.

 

oh yeah, so how does that work?  Can we update to the new version of Ubuntu without loosing anything?  I really don't care about updating to the new version of Ubuntu as long as GNS3 still works like I need it to.

 

I'm sure i'll feel more like you one day, but my focus is on GNS3, so it's not a big deal for me.

 

Oh, and you can just choose not to update, correct?  I believe you just don't get updates anymore if you don't update to the new version of Ubuntu after a certain period of time?

 

Well, to be honest, I've been slightly aggravated by 10.10 as well, so I mean I am actively looking to change my current OS.

However, I don't upgrade Ubuntu - I install fresh right on top of itself.  Many of the settings/data files are saved on /home anyhow, so when I move /home to it's own partition, each time I re-install, I just point /home to that partition(which is called /home).  That way I keep most of my settings and don't have to worry about upgrade entanglements.

 

I'm now using Ubuntu 11.4.

 

I like it!  More user friendly.  So far so good.  if I see any problems with GNS3 i'll post it up on here. By the way, I went ahead and created a partition and selected /home as the mount point, good idea.

 

I spent all last week, but I am dialed in now.  <- I hope.

Now I can get back to serious CCNP lab work!

Because of the new cheep PCI rs 232 cards I got in, I dumped my old p4 pc I was using because of the serial ports that it had.

I brought up my old unused 9500 phenom quad core, to use for gns3 only.

I partitioned the HD for multi booting OS.

Win 7 & gns3 are working perfectly smooth,

and I have connectivity from the cloud of gns3 to my local area connection, and directly to a cisco switch. 

>>>>(connectivity)<<<< !!! (rebootable, saved Connectivity).

 

The little Phenom is now, running

3 2691, 12.4ver, enterprise IOS , and the cloud,

at a steady 1 ~ 5% cpu usage with spikes up to 27%.

The phenom rig spec are meager for today’s standards, specs are as follows:

Amd 9500 phenom quad:

3 gig ddr2:

8500gt Nvidia 512 meg:

Mobo ~ terrible ~ Asus m2n68 narra3

PCI rs232 ~db9 card:

550 watt rocketfish psu:

80 gig HD partitioned into 5 partitions, for XP, Win7, ubuntu 11.4, Solaris unix, & HP unix.

500 gig HD storage.

 

Gns3 ~ cloud  is new to me, and I do not know if an extra 1gig ddr2 stick will be needed, I have only installed the OS, gns3, packet tracer 5.32, boson subnet calculator, adobe reader, winrar, ultra ios, & (editpad Pro6 <- tabbed note pad).

I am not sure if I will install MS office, win7 is running great as is, and I probably need the cpu resources for a more complex campus topology.

 

gns3 5%cpu.PNG

 

More RAM is better for GNS3. how much RAM does a dynamips process use right now ?

Did you enable the "sparse memory usage" in GNS3 preferences ?

 

I can spare a gig of ddr2 from my other 32bit rig for this sweet gns3 setup for sure! 

  I left the IOS setting @ default 64meg. Emulating heavy traffic flow is important, but for now I just want to get my protocol commands down more solid with less confusion and without having to look things up as much.

I am pretty happy about the success of bootable, clickable reliable, connectivity with

w7, ~ gns3, ~cloud, ~ c2950T.    <- I certainly give the credit to all of our Seniors.

Joshua how is the ubuntu 11.4 going ok?

I started to load it last night and it did not like my HD partition that I made for it, for some reason.

 

Ubuntu users ! I have found this link about Kernel Upgrade

http://www.blindhog.net/prevent-kernel-upgrade-ubuntu-9-10/#more-925

 

Why would I not want to upgrade my kernel?” Personally, I only have one reason: VMWare Server. Other people have to compile special device drivers for video cards, sound cards, etc.. I use VMWare Server for my home voice lab.

 

GNS allocates the ram for each instance of IOS right away from your physical ram. As long all the instances plus the Operating System overhead will fit in your physical ram life is good. Since GNS emulates hardware don't expect that you will get good performance out of this emulation. In average a GNS emulated router is approx (very roughly) a 100 to 1000 times slower dispatching packets. Have a look in Hacki's forum, there is some more info about this.  http://7200emu.hacki.at/

 

I like it Simon... it has some bugs in it though, but none that have to do with GNS3, so I'm happy.  You can now push a window up against the side of the desktop and it will reshape automatically, just like Win7, which is the one and only thing I missed about Win7.  I'm now using Ubuntu ONLY.  No other OS installed on my hard drive.  Linux kind of reminds me of Cisco in the way that it's fun to learn the command line.

 

 

Simon wrote:

 

I can spare a gig of ddr2 from my other 32bit rig for this sweet gns3 setup for sure! 

  I left the IOS setting @ default 64meg. Emulating heavy traffic flow is important, but for now I just want to get my protocol commands down more solid with less confusion and without having to look things up as much.

I am pretty happy about the success of bootable, clickable reliable, connectivity with

w7, ~ gns3, ~cloud, ~ c2950T.    <- I certainly give the credit to all of our Seniors.

Joshua how is the ubuntu 11.4 going ok?

I started to load it last night and it did not like my HD partition that I made for it, for some reason.

 

Hi Martin/Travis,

 

I've just got my multiport NIC card (3x4 -adaptec ANA 64044). waiting for the switches to come.

I've got a one switch to play around with,  trying to test things out.  After connecting the switch to the router in GNS3 (under windows platform-- havn't tried linux yet) I got a CDP DUPLEX MISTMATCH error message.. I used the fundamental technique (like hard coding the duplexity and speed values)  to fix the problem but then the switch/router would not discover each other(show cdp neighbor would not show anything).

 

I saw the Bowler's Video for connecting an external switch to the gns3 on youtube. and in the video he got the same problem striaght away.. what i did was that i changed the settings on all the three places, the Switch, the router and the port by going to the adaptec software. what he did is just change the settings on both the router and the switch and left the adaptec port on it default setting of Autodetect.

 

Even after doing all that and fixing the cdp mismatch error, Bowler was still getting HALF- DUPLEX on the router port (when he ran show int fa0/0)  and FULL DUPLEX on the switch port.

 

I just want to know if its a thing with gns3 that the routers work in half duplex mode when they are connected to the external switchthrough a physical port on the computer

 

Kindly share your findings

 

Thanks

 

we have seen that error; so far, I am not aware of any solution; maybe it is just GNS3 thing. What happens after shutdown and reboot, you know next day ?

 

for now you can apply no cdp log mismatch duplex command

 

well, i didnt restart the computer after that. will have to wait for a day or so to get hold of the switch and let you know about it.

do you also have your virtual routers run on a half duplex mode and you still get the same result as per the topology ( or workbook for eg INE ) you are working on?

 

hey Martin, i have a switch to test. will let you know.. btw do i need to keep the lan port to auto?

 

GNS3 does not emulate Layer 1 (Physical).  So if you set your switch port to autonegotiate, it will autonegotiate with the NIC in your computer, not the GNS3 router.

 

HOWEVER, both gns3 routers and your real, physical switches will send and receive CDP packets, which will generate a syslog error in regards to duplex and speed issues.  Just set your GNS3 routers to match what your physical switch autonegotiated to.

 

... Windows sucks for GNS3, I wish I could help you wish your windows problem, but I myself went straight to Linux.

 

the issue is resolved by keeping the NIC to auto and changing duplex and speed to full and 100 respectively on both the real switch as well as the virtual router. this same setup didnt work yesterday for some reason.

 

i dont want to get into the nitty gritties of windows and linux. to each there own.. as far as GNS3 i concernd , it works beautifully on my Windows 7 machine..with corei7 and 4 GB ram only... so i dont need linux at all..

 

So your PC is autonegotiating to 100Mbps and half duplex...

 

If it works for you, then you aren't pushing it.  Good luck.

 

 

 

Pratyush wrote:

 

i dont want to get into the nitty gritties of windows and linux. to each there own.. as far as GNS3 i concernd , it works beautifully on my Windows 7 machine..with corei7 and 4 GB ram only... so i dont need linux at all..

 

no..both the switch port and the router port are running on Full dup now and the error message is gone. all the multiport nic cards are configured as auto

 

no?  lol.     I said PC NIC, not your gns3 router or switch PC NIC

 

 

 

 

 

See, since your multi-port NICs are auto, which are connected to your configured: speed 100 duplex full, you are causing a duplex mismatch between your switch and your PC, which will be obvious to you once you take a look at your PC interface settings.

 

This has nothing to do with GNS3, as GNS3 DOES NOT EMULATE LAYER 1.

 

Your logical connection between your switch and gns3 router seem to be working fine because the cdp packets are telling each other that speed and duplex are the same, however the actuall, PHYSICAL PC NIC is set to auto, while your switch is configured, so no autonegotiation can take place, so your PC will not be able to autonegotiate to full duplex, and fall back to half duplex.

 

Am I just crazy?

 

Switch int manually set <---------------> autonegotiate PC = duplex mismatch

 

Martin,  Are you still running with GNS3?  Was looking for additional R&S resources/labs, etc?  Hit me with some links if anyone has them. Thanks, Alan

 

search the Net; there are a lot of files over there

 

I got HP EliteBook 8440p business edit with Win XP at work and run the same topology as you see on the page 1;

It runs pretty good; i5 M520 with  2 GB Ram;

 

7 routers running BGP over MPLS over EIGRP in ISP, idle is about 8-12%; traceroute reaching 15%; pings 22%

 

Elitebook8440p processes.jpgElitebook8440p idle.jpgElitebook8440p pings.jpg

 

I have been following this post and it has been exceptionally useful. Can I ask has any one tried GNS3 on Xeon processors?

I suspect a Dual Quad Core Xeon rig may provide a high amount of number crunching ability that would run GNS3 well.

(Apologies if this has been asked before)

 

Yes it's been done.  The faster the CPUs and more cycles you can fit in there, across more cores, is better.

 

I looked into building a dual quad Core i7 2600k box, but there aren't any good dual-CPU boards for that socket.

 

LOL - So the only option currently is a Mac Pro with 12 cores!

 

Ok, I dunno whats been going on with me PC. It was running GNS3 perfectly fine, but now that I look at it, its just using way too much memory. I have only 3 routers running, and that also I've only just finished assigning IP addresses to them and just look at the memory usage!

 

issue.png

I have a Phenom II X4 945 @ 3.00 Ghz with 4 GB of RAM. I have the IDLE PC value applied too.

 

are you using the same IOS image for all routers ?

There is also check box for Enable Sparse memory option in Preferences under Dynamips, make sure you have that one check in before running GNS3.

look at Processes, how many dynampis are there and how much RAM they taken ?

 

Hey Martin.

 

Yep, same image for all routers. I did figure out what the issue was. Some stupid defrag thing had started behind it all and it was consuming a lot of memory. Shut that down, and all was well.

 

I'm curious to know though, what does the sparse memory option do?

 

I think limits RAM usage per dynamips process or compresses memory;

for  more tips see

https://learningnetwork.cisco.com/thread/23445

 

Throw up your pictures of your GNS3 lab!

 

IMAG0009.jpg

 

 

 

 

 

IMAG0012.jpg

 

IMAG0013.jpg

 

IMAG0014.jpg

 

IMAG0015.jpg

 

IMAG0016.jpg

 

IMAG0017.jpg

 

IMAG0018.jpg

 

IMAG0020.jpg

 

IMAG0021.jpg

 

wow

 

how many NICs you have in PC ?

 

aaaaa.jpg

 

I love the air filter on the chassis

 

Thats my setup.. IMAG0193.jpgIMAG0198.jpgIMAG0195.jpg

 

that looks like very good place for cisco studies

 

Martin wrote:

 

how many NICs you have in PC ?

 

There's (2) PCI and (1) PCI-E  4-port server NICs

 

You may be confused as it looks like there's only 2 when looking inside the computer case, but if you look closely in between the larger green PCI NICs, you will see a much smaller looking green card in between.

 

Warren Sullivan wrote:

 

aaaaa.jpg

 

I love the air filter on the chassis

 

LOL yeah it takes C16 race fuel.

 

Pratyush wrote:

 

Thats my setup.. IMAG0193.jpgIMAG0198.jpgIMAG0195.jpg

 

 

Nice, I love this stuff

 

HEY, I just noticed by the interfaces you chose to connect, that your setup was designed for the INE labs!

 

i would say that you have sharp eyes

yes this is designed as per the INE topology but i'm also following the Narbiks for some of the labs.

 

-Pratyush

 

goodness sir you have some serious hardware to practise , i dosent have such things and never seen totally depend on gns3 and sometimes on packet tracer for switch. you surely have some serious hardware good luck

and happy to atleast see that as i may never see until i get a job in a big network industry

 

naresh wrote:

 

goodness sir you have some serious hardware to practise , i dosent have such things and never seen totally depend on gns3 and sometimes on packet tracer for switch. you surely have some serious hardware good luck

and happy to atleast see that as i may never see until i get a job in a big network industry

 

Well I built the PC and paid for that, but the switches are borrowed from work.  3550s are good enough really, they just don't have a few features like GLBP and private VLANs...  As far as Catalyst switches go, the 6500s with Sup720s are the only switches with GLBP.

 

yes i doesnt have such powerful pc i had an quard core2.83gz  4gb ram gtx275 machine. its not the gns the problem for me is there are  no  real equipment here  to rent . because nobody has it to rent. so upto its  upto route exam  gns will take it but i have to find a way for switch exam

 

Ebay usually has 3550s for around $200 per switch.

 

I did this a little esaier and saved me the casing. I put a server together with some straight forward standard components. An ASUS motherboard, I5 2.5GHz, 16GB ram and a few harddrives. This server was in total approx 480$. Just screwed the motherboard at the wall and off you go. Since I am a voice guy I need some physical interfaces to do the job. The server holds 8 VMs. Two CUCM Publishers, UCCX, Exchange+AD, Unity Connection, UCCE, Syslog, recording server. GNS runs on the host system to have better access to the physical nic cards.

 

PICT6994.JPG

 

  Patrick

 

Looks like a lot of fun!  I like the wall mount PC idea

 

Well, it looks like you do not have to worry about PC cooling and such

 

how about moisture/ humidity your basement ?  that might spoil the fun.

 

no moisture problem at all, I am enjoying a dry basement and the photo is taken from right beside the furnace. I am more worried about our cats roaming around.....

 

(how i stop receiving this email when everyone update this post?)

 

this is not right place for this ;

create new topic or see https://learningnetwork.cisco.com/message/60409#60409

and delete your post from here

 

thanks

 

hail to gns 3  i had passed route exam in last month and now looking for switch exam

thank you everyone

 

Good job man.  The Switching Exam is where GNS3 is really fun with being able to connect real switches to your gns3 PC.  Good luck!

 

Hi Patrick,

 

I wanna ask you is this lab for CCIE Voice or for any other certification ??

 

 

Thanks & Regards,

Natraj Babaria

 

I am currently using it for helping two friends of mine to get through CCNP voice. It should be sufficient to do CCIE voice prep as well. Most of the voice configs are router related and can be done in GNS (running on the "wall server". For the T1s and other physical interfaces I have the 2800s and 2600s conneced physically. to simulate PSTN and analog phones as well.

 

Hi,

 

Great work I just wanna know I have also same lab at home home Routing and switching but the probloem is that when i am telnet from my officer i can login to access server which is cisco 2500 but when i want to go onto another device i am unable to do go i dont know how come go back.

 

 

__Internet___Cisco 2611 Router_____Cisco 2950 Switch____Cisco 2500 Access Server

                                                                                     |

                                                                                     |

                                                                                     |

                                                                                PC with GNS3

 

This is the scenario but when i do telnet to access router and do exit i directly come to cisco 2600 router. Do you have nay idea about it ??

 

 

 

Thanks & Regards,

Natraj Babaria

 

If you are willing to shell out some money, then use a 2509 or 2511 router with 8/16 RS232 connections and use it as a reverse telnet server to get to the console ports directly. This gives you the advantage that you can blow away the config and still access the devices as if you sit in front of the console port. I solved this a little different at my home. The router top-right in the picture is actually the one connecting all my network stuff to the internet and is the PSTN simulator with the T1s. It is the only component having a stable config and will not be used for testing, just infrastructure for the labs. That is the one with the outside IP-address. I configured a plain VPN without encryption just to be able to access the internal network from outside wherever I am. The changing outside IP-address I tackle with a dynamic DNS name I registered at dyndns.org.

 

Best

  Patrick

 

Hi Patrick,

 

I have done with this scenario only i ahve done NAT on my internet router and now its working fine and i can direcly access my acceess server from the internet but still one thing i want to know what is the command that i dont want anybody who is accessing my access server will not able to change its config. how to configure that i mean shoul i need to edit in lin con or lin vty or need to creat by aaa authentication,

 

Thanks & Regards,

Natraj Babaria  

 

if you don't want anybody to alter your config, then don't give them the enable password. If you like to give them access to certain commands which are privileged but not the whole enable privileges, then you need to create local users and assign them privilege levels (1-15). Have a look here, this may help you further: http://www.dslreports.com/forum/r23338421-Config-user-account-on-cisco-router-2611#23339930

 

Hi Patrick,

 

Thanks for the info will let you know if it works.

 

Thanks& Regards,

Natraj Babaria

 

yeah thank u but  decided to go for proctor labs

 

Did anybody in here ever try open-v-switch in combination with GNS in a Virtual-box machine go get a switch with newer features to run with your routing topologies?? I did not find a thread mentioning this, so I'm just curious if anybody ever tried. I guess it's worth a shot. Have a look here:

 

http://openvswitch.org/

 

sounds promising and is used in productive environment.

 

Cheerio

   Patrick

 

thanks, will check it out.

 

is the opnen v switch is same as vyatta

 

I looked at the website Patrick, sounds interesting for a production network, but for Cisco study?  Let me know what you guys find out if you try it.

 

you are right. it's nice to have a switch with all the features the 16-ESW module is missing but unfortunately it is not configured like a cisco switch. So no use in here to practice.

 

I see what you are saying then; use in place of the ESW module in case you need some switching in order to study for routing.

 

Hi,

 

yeah you are right but in GNS3 switch module support 70% of the switch command so you can do basic switching which support your routing.

 

Thanks & Regards,

Natraj Babaria

 

Out of context

Natraj Babaria wrote:

 

Hi,

 

yeah you are right but in GNS3 switch module support 70% of the switch command so you can do basic switching which support your routing.

 

Thanks & Regards,

Natraj Babaria

 

Just moved my lab to one of my rooms, gotta love labbin' it up! 

 

 

IMAG0174.jpg

 

Hi Martin,

Try bes process Limiter ,

 

To control Cpu useage.

I bet wont go beyond 25- 30 %

with your current configeration(Its a Gr8 gear to have )

 

regards,

MJM

 

Joshua, this looks great but will be awfully noisy while sitting beside it all day. If you have a chance, I would try to bring it into another room to have a silent learning envireonment..... unless you need the gear as a heater in the upcoming winter times.....

 

You're telling me!?  hahaha  I work with these beasts every day and use two of them to study, so I know exactly what you mean Patrick.

 

I ordered 15x 50' cat6 cables so I can put that monstrosity in my closet, and yes they do warm the air a bit even though there isn't hardly any load.

 

you have really a ccie lab . its great to have it

 

Noobie question I have been using GNS3 on my laptop for a while during CCNA & TSHOOT exams. No problem. Now I have started ROUTE CCNP prep and I am running into a situation of well you know laptop not able to keep up. After reading through all of the posts, I have to ask is there a document available to setup a server for labs, using GNS3 and some external hardware using the VMware support?  Need to save some time employer pressure. Please let me know or possibly point me in a better direction to be able to complete the lab setup portion in a reasonable time ;o)  Thank you.

 

server for labs ? like a PC at home loaded with GNS3 that u can connect to over the Internet type of thing ?

 

HP ML350 G6 4 cores 32GB RAM etc

 

I just need a document to get me going on the install and config of GNS3. I tried the web site but I got hung up on the VMware portion.

 

This server is on the VMware compat list.

 

maybe this will help you https://learningnetwork.cisco.com/docs/DOC-12893

otherwise, install GNS3 just like you would on PC.

 

Sorry for so many posts have lotsa questions and trying to study at the same time

For a server what is the best Windows version 2008R2 or ??? (Not in docs on GNS3 site).

Is it better to bite the bullet and start fresh with Linux, if so what is the best brand to work with?

 

Read recently there are some issues with GNS3 on Server 2008; don't know details; you can try it;

If you know Linux, then yes go with it; more drivers, more freedom to run scripts,

 

Martin,

Both the document and the OS recommendation helped a lot.

I am on my way setting up labs as we speak...Thanks so much.

Sallie

 

GNS3 + PuttyCM.jpg

I have managed to configure GNS3 with PuttyCM. Awesome

 

There is a way to set (make) Access Server in GNS3; search youtube for video on how to;

 

To Sallie,

 

I actually don't have a problem running GNS3 over LogMeIn free from work on my Home PC.

 

Don't know if that helps or not. Either LogMeIn has come a long way, or our connections to home have. There is a bit of lag, but not much.

 

Hi Martin,

 

Can you share the GNS3 topology used in the above testing, let me try how it works with? vsdendukuri@hotmail.com

 

Message was edited by: Venkata S. Dendukuri

 

I thought I did;see page 5 or my  documents;

https://learningnetwork.cisco.com/docs/DOC-11027

 

Still looking for Perfect Laptop;

Here is one from HP elitebook 8440p with i5 M520 @ 2.4GHz, 2 GB RAM, Win XP,

Running same topology (page 1), loaded with 7 routers running, idle is at 5%; pings are peaking at 15%, traceroute gets 22% then slow downs to 9%.

 

HP laptop i5 info.JPG

I would say it runs better than i7 on Win 7. could it be Win XP vs 7?

This is really same topolgy as on page 1 with just 7 routers on.

 

see attached for full picture

 

all GSN3 files are here

https://learningnetwork.cisco.com/docs/DOC-11027

 

hi Martin, you mean GNS3 runs faster in WinXP compared to Win7?

 

yes, due to RAM memory usage; XP uses less than Win 7 so there is more RAM left for GNS3.

 

Win 7 is fancy, maybe too fancy.

in case when you have a lot of RAM to spare, then it is a tie (I do like Win's fanciness).

 

it runs faster in linux!

some people debate about this but i can assure you it runs faster in linux, i have gns3 both in win7 and ubuntu both x64, i got 4gig of ram with a i5 processor. it runs faster in by linux than in win 7. When you have a computer with slow performance, old processor and just around 2 gig of ram, yes maybe you should consider to use xp, but then again, i would go for ubuntu! linux filesystem is completely different from NT architecture, it handles memory and processor differently, even in x86 machine i would advise you to go for linux. you also can only install your favorit desktop like gnome or lxde, kde and so on, and remove any unessessary packages. this will improve your performance quite a bit. if you do the same for xp yes its a very fast OS if you remove some components to, but as soon as you install an anti-virus, goodbye! Nothign beats the fun, manageability, versatilability, and modularity of a linux box! Not even gonna talk about security...LOL

 

NL

 

yes agree with Martin, I had tested it on win xp using vmware, i am able to run 6 routers on gns3 running win xp simultaneously. but  if i use  win 7 on vmware if i use  same setup 6 routers and run it together,  my laptop crawls...

 

Message was edited by: chrisjoms

 

Linux is our friend

 

of course, thats obvious, windows xp by default consumes around 80Mb of ram on a clean install, when you harden it it becomes a bit faster and more secure, but when you start installing office, your applications, antivirus/firewalls/antispy, etc.. thats it, it sky rockets to 120-500Mb of ram depending on which applications you install and run on starup, which is not that bad. Windows 7 its a different game, it comes out of the box with 500 + Mb of rambei9ng consumed on a clean install, so if your smooth with it and only install apps that you really need you will end up with 1 gig 1,2 gig without any opened application, so you can't even compare it. but when you grab a linux distro and you harden it just right i bet it will run faster and more effectivelly! depends on the hardware arch, OS, and L8 action

 

got problem with my GNS3 running on win7 64bit ultimate, says "failed to determine version of Dynamips".

 

Need your help guys... what I have is "GNS3-0.8.2-Standalone-64-bit" from gns3 site......

 

i would advise you to install GNS3 v0.7.4 which is the stable version at this time. v8 just came out of beta testing and i still haven't tried it and ill just try it in a couple of months from now, to early for me yet.

 

Anyway, that error states that GNS can't find Dynamips server.

Even though in the site they state that that version got all packages included for x64 arch, i think you better check it first. Check if Dynamips, Qemu/Pemu, Putty, VPCS are really installed. if so, uninstalling and re-installing teh application might solve the problem.

 

this is version 8: http://sourceforge.net/projects/gns-3/files/GNS3/0.8.2/GNS3-0.8.2-all-in-one.exe/download

 

v0.7.4 can be found here: http://sourceforge.net/projects/gns-3/files/GNS3/0.7.4/GNS3-0.7.4-win32-all-in-one.exe/download

 

I agree... I've never had any problems.  Use the defaults too btw unless you know what you are doing.

 

it runs faster in linux!

well, it depends. if you go few pages back, I did a test (page 13). Same topology on same i7 dual-boot PC. Ubuntu did not performed better than WIn 7; it had high CPU usage even without running anything! but I used Ubuntu's system monitor and guys said that one is not very good in evaluating system performance. so, I left things along without big and decisive conclusion.

It might be that if you have weak CPU, use Linux;  if your CPU is I7, it does not matter.

 

well, it depends on your architecture. for example, in my last job i had a toshiba i3 650 (i think it was 650 or 550 cant remember) and opensuse 11.3 ran much faster than windows 7 installed on that same toshiba.

on my desktop which is an i5 on an asus p7p55d-e motherboad, got an sata3 HD boosted to 6gig/s, ubuntu 11.04 doesn't run like im used to which disapoints me (10.04 was far better), in fact its full of bugs, problems with sound (sometimes it desappears), problem with my graphic card (HD5850), but running gns on it its still pretty smooth and faster than in windows 7 which is occupying hd space in dual boot. it all depends on your hardware but i can bet on it, it runs faster than in windows. ext file system is different than ntfs handling files, mind that on a linux you dont even worry about "defragmenting" your hard drive, its faster believe me!

 

btw, you might wanna use top instead of the graphical system monitor. just use user@box#top [enter] and Ctr^c to stop the process.

 

NL

 

I'm still using 11.04, and IMO I like it much better than the older versions of Ubuntu and I'm not going to be upgrading any time soon.

 

Bottom line; ubuntu allows me study Cisco in ways that Windows can't.  Don't really care about a a few percentages of processor and memory utilization here and there when comparing OS to OS...

 

what I mean is that.... from my Win7 64bit, I'm not able to make it run using gns3 64bit

 

i got the installer from here http://sourceforge.net/projects/gns-3/files/GNS3/0.8.2/GNS3-0.8.2-Standalone-64-bit.zip/download

 

works on mine Win 7-64 bit. both versions work fine: installed one and stand-alone one. are you admin user?

 

running it as admin shouldn't matter, although it's worth a shot.  (Martin knows this, but for those who don't, if you are using Windows, you need to run GNS3 as admin in order to connect gns3 to your PC's interfaces.)

 

Win Vista and 7 have that User activation Control (or something like that) which asks for a permition to run gns3.

 

In Linux, GNS3 might start but not Dynamips.  Dynamips will not start if you don't change its permission.  there is also something with interfaces that you must be root to access those.

Ubuntu will not let us login as Root user, which make me mad sometimes.

 

gksudo gns3, you can log in as root also, but it's not a great idea.

 

by default?  I think you have to set Ubuntu  up so that it lets you login as Root; I getting  tired of typing root password every time  I  want to do something serious.

 

Not really sure, i've only done it once and I never played with it... what is it that you need root permissions for?  Just GNS3?

 

updates, installing software, running other things,

I have Ubuntu 10.10 and 11.04 and those will not let you login as user Root.  but  there is a workaround this on ubuntu site.

 

lol, and you just can't stand typing in the password everytime huh?

 

ampdeck I am running gns3 8.2 on w7x64, but i do not have sp1 installed. try rolling back your windows to the earlier restore point to see if it is the windows service pack update

 

found the solution! i had to manually install WinPcap through their website "http://www.winpcap.org/install/default.htm"

 

with the information you give its impossible to troubleshoot.

 

In linux you do not login at run level 5 with root, you login with your username and you use 'sudo' to perform root operations.

Enabling the root account is rarely necessary and is a security flaw. almost everything you need to do as administrator of an ubuntu system can be done via sudo or gksudo. If you really need a persistent root login, the best alternative is to simulate a root login shell using the following command:

 

sudo -i or sudo -s

 

Since Red Hat 5 I 've been using Linux on and off and always as a Root (until I met Ubuntu). Never had any problems. We should have an option (maybe advanced user option) to be able login as Root when needed.

It is security risk but not as much as using Windows with admin logon.

 

thats whith redhat flavors and that is a server, not a desktop. ubuntu is derived from debian which is different.

the root user should not login in run level 5 which is multi user and gui environment. you login as root into servers when you are an admin and you really know what you are doing and even admins make mistakes. You can manipulate the sudoers file if you want, wouldn't recommend doing it though!!!!!

 

wind0w$? argh....

 

Nuno you seem to know a lot about OS's

 

Not Server! no GUI in servers. Old Desktop Red Hat editions 5, 8, 9. Then, they made Fedora 10 where you cannot log in as Root unless you make some changes (those are easier to do) and were able to skip password.

 

anyway, this post is about GNS3. So maybe GNS3 will run better on Fedora than on Ubuntu?   Maybe it's time to go back to Fedora?

 

I could have sworn Travis was using Fedora or some other distribution.  Maybe he'll pop in and say something.

 

I have no problems running GNS3 on Ubuntu w/ a regular user account, don't have to gksudo or anything.  I've heard that using the tap interface requires root access, but I haven't had any problems attaching my GNS3 devices to cloud/tap.  Maybe it's because I wrote my init script to assign ownership of the tap interface to the regular user: "tunctl -u user -t tap0". What other GNS3 tasks supposedly require root?

 

user@ubuntu:~/bin$ ps aux | egrep '(USER|gns3|dyna)'

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND

user     13067  2.4  1.7 229612 43588 ?        Sl   01:18   0:02 /usr/bin/python /usr/bin/gns3

user     13075 67.7  8.0 348248 205304 ?       Sl   01:18   0:52 /usr/bin/dynamips -H 7200

user     13090  1.3  0.1 128096  3160 ?        Sl   01:18   0:01 /usr/bin/dynamips -H 7201

user     13126  0.0  0.0   4152   844 pts/1    S+   01:19   0:00 egrep --color=auto (USER|gns3|dyna)

 

 

Yes, I really did call my regular user account "user" :-)

 

Just interfaces

 

Not just for simple GNS usage; I set up multiple instances of advanced GNS3 (Breakout switch, etc) where I had to modify some of system files.  It would be nice to login as Root for initial set up, then use it as a regular user afterwards.

 

it looks like Ubuntu 11.10 (latest with Kernel 3.0) has stolen Windows 7 drag-and-snap feature and Aero-look-a-like graphics!   And when installing software, I did not have to type root password at al!  Maybe they have realized that typing root password too much is annoying?

 

Just an observation I ran into this evening. I was trying to construct a site-to-site vpn to run multiple vlans through this tunnel using xconnect interfaces. The weird thing I ran into was the vpn coming up, was stable all the time, but packets through the vpn were dropping over 50%. The drops did not occur equaly distributed, the drops occured for 15 to 20 secs after a bunch of packets went through without a problem. Just before the dropouts happened the pings started to take longer, up to 250ms, then connectivity was lost for another 15 to 20 secs. After testing different router models and interfaces it turned out to be GNS under W7. After I forced GNS to run in Vista compatibility mode, everything worked as intended.

 

Just a heads up for anybody who may be experiencing some issues with VPNs in GNS

 

Best

   Patrick

 

Martin wrote:

 

Not just for simple GNS usage; I set up multiple instances of advanced GNS3 (Breakout switch, etc) where I had to modify some of system files.  It would be nice to login as Root for initial set up, then use it as a regular user afterwards.

 

it looks like Ubuntu 11.10 (latest with Kernel 3.0) has stolen Windows 7 drag-and-snap feature and Aero-look-a-like graphics!   And when installing software, I did not have to type root password at al!  Maybe they have realized that typing root password too much is annoying?

I'm assuming that is Oneric and you are using the flashy new Unity desktop, I didn't know it came with the 3.0 kernel. Do you run Server Edition or desktop for GNS3. I ask because recently my Win7 machine died and I have been relegated to my Macbook, to use GNS3 I've had to install it on Ubuntu Server Edition, and i've had X11 to it to run GNS3.(works suprisingly well)

 

Thanks for sharing that tip Patrick, im actually using it in my w7 machine and my ubuntu machine, no problem in ubuntu and for example in w7 i cannot have a lab running more than 20 minutes, dynamips server crashes.

 

thanks for the tip,

 

NL

 

Hi Martin,

 

 

Martin wrote:

 

Not just for simple GNS usage; I set up multiple instances of advanced GNS3 (Breakout switch, etc) where I had to modify some of system files.  It would be nice to login as Root for initial set up, then use it as a regular user afterwards.

 

 

 

you can just create a shortcut on your desktop and edit it to run as root:

sudo python “/opt/GNS3/gns3″ (or the path you have install it to)

 

 

Martin wrote:

it looks like Ubuntu 11.10 (latest with Kernel 3.0) has stolen Windows 7 drag-and-snap feature and Aero-look-a-like graphics!   And when installing software, I did not have to type root password at al!  Maybe they have realized that typing root password too much is annoying?

 

Actually it was the contrary, m$ is running after ubuntu which is leading the cutting edge technology since version 8.04 (which in my optionion was the best stable ubuntu release to date). Ubuntu is now falling and moving into a very obscure path IMO, which has lead many long time users like me out of their track. I installed 11.04 some 4 ot 5 months ago and i really dont like it, too many bugs which are not addressed, lack of support for various hardware boards, instable in my optinion. Regarding their new default desktop system unity i really dont like it and i consider it Not for me. But you can get rid of it and fall back to gnome classic or gnome 3, very simple.

 

The thing that you dont like about "typing the root password" for every process or application that needs to make changes with elevated priviledges in your machine is one of the technologies micro$oft adopted which linux had since i can remember really. you can change these settings at your will, remember its an Open Source software, you can change it and make what you want, but remember the purpose of why it is made that way in the first place.

 

I would advise you to check opensuse and give it a try, iv used it for long time now, and last year i had a laptop at work with it, it is still a very stable and robust system, one of my favorits really and they have a "Single Click" GNS3 installation and their community is very good, one of the best. check it out and give it a try.

 

one of the things i see oftenly is people just being dragged when a new release comes out without really reading whats new in it and what benifits it really brings to your current work needs. i always fallow the "if its working, and working stable, do NOT touche it" mentality, iv had so many problems in the past that iv learned not to just install a new version just because is new. Right now me and every one here i think, needs the most spare time to study and focus their time on networking/cisco so what i see logic is getting a stable robust desktop system they feel confortable with and stick with it, that way you wont have to spend hours and hours trying to figure out what to do to fix a problem because no one address it yet (thats the problem with new releases) including new gns3 releases, remember gns3 has no support what so ever, i still use version 0.7.4 and it is stable in my linux so im not touching it! maybe i will upgrade it in a few more months, depending on the reviews and the problems that will or not be addressed, i think its the best option for me because i dont have time to lose.

 

if your having a hard time give opensuse a try im sure you wont regret it and once you have a stable machine just keep it that way, this is my opinion hope it helps,

 

NL

 

Please delete this Simon along with my response to it... As amusing as it is, it's not proper for this forum.  Sorry man.

 

Just a little more info on the observation I described in post https://learningnetwork.cisco.com/message/222757#222757 (409) in this forum:

 

The described effect shows not only when using a VPN from a GNS-router to a peer in the internet, it shows also when practicing multicast configs. I did not find any references to my VPN issue with the intermittend ping drops but I found some info about using multicast. In the previous post (409) I thought switching into Vista compatibility mode should fix this, but no, this is not the solution. I had some better success with switching off "route-cache cef" on the interface, but this was not the complete solution either. The culprit is the emulation of the FastEthernet in the 26xx/37xx routers. (You can find some entries in hacki's forum about multicast and intermittend packet loss). It seems there is something odd when using double encapsulated or multicast packets. When you send more than just 20 vpn or multicast packets through the GT96K FE interface this problem shows. A show controller reveals the chipset:

 

CSS#sho controller f 0/0

Interface FastEthernet0/0

Hardware is GT96K FE ADDR: 66667A48, FASTSEND: 6072E6E4, MCI_INDEX: 0

 

Nothing wrong with 26xx/37xx emulations as long pim/multicast and VPN is not on your list. To avoid running into phantom errors and you possibly going to pull your hair out because your config seems to be wrong, give the 7200 router a try. The Ethernet/FastEthernet/GigabitEthernet interfaces use a different chipset.

 

CSR#sho controller g 0/0

Interface GigabitEthernet0/0 (idb 0x66BC8A50)

Hardware is i82543 (Livengood) 3?

 

With this chipset all seems to run rock solid. The downside is the needed ram. Cisco recommends 512Mb ram for an advanced IP services IOS.

 

Hope that helps a little to avoid weird effects and foremost unnecessary troubleshooting.

 

Patrick

 

What I overlooked is the fact that you can still use 26xx/37xx routers if you plug-in other interface controllers. The switchmodule cannot support subinterfaces if you make the port a routed port by configuring "no switchport". So this is not an option. If you use the "NM-1FE-TX" then you are using the AMD chipset.

 

CSR#sho controller f1/0

Interface FastEthernet1/0

Hardware is AMD Am79c971

 

This works perfect for me, so VPN and multicast will work again with my favorite 2691 or 3725 routers.

 

quick question guys. I have seen .net topologies using localhost or 127.0.0.1 for hypervisor. When is the best time to use between the two? im confused

 

i think gns3 doesnt support L3 portchannel

 

Command below gets an error

 

!

interface Port-channel12

no switchport

ip address 10.2.4.13 255.255.255.252

ipv6 address 2026::3:1/122

ipv6 rip RIP_ZONE enable

!

 

Hi, ampdeck

 

Can you send running config for interfaces configured to bundle Po12?

 

should I just use the default ram to 128mb in GNS3? or it should based on my physical ram?

 

btw, here's my machine's setup

Core i7 2.13ghz

4gb DDR3

 

Recently got hands on Digital Ammeter AMP Panel Meter; you know a device that measures AMPs. IF you multiple Amps by voltage, u will get Wattage. Then u can figure out your electric bill.

 

Resaults are based on the same testing PC; Intel i7 with 12 GB RAM and old Nvidia GT 220 (no-power needed) and MPLS GNS3 topology (from 1st page):

and LSP750 750W ATX Power supply

 

Idle PC with nothing running = average 2.65 Amps; min 2.63 max 2.7 = 318 Watts

Firefox browser with many tabs open = aver. 2.74; min 2.70 max 2.78 = 329 Watts

Watching Youtube on Firefox running many tabs = 2.80 = 336 Watts

 

Dynampis/GNS3 with INE's CCIE lab for Dynamips loaded with OSPF = reached 5.0 during booting;

With Console windows open for all 12 routers (4 are switches) == min 4.40 max 4.80 = 460 - 576 Watts

CPU utilization jumps to 75%

MPLS BGP AS with configs and running = 3.2 - 3.45 = 384 - 414 Watts

 

Games: FIFA12 = 3.25 -3.45 Amps

Crisis 2 - aver. 4.50 max 4.80 Amps

 

Conclusion: whether you play Crisis 2 or doing CCIE labs, you burn same amount of electricity on average.

 

Next up will be test with real switches.

 

Message was edited by: Martin

 

C3560 48 port switch = idling burns 0.68 Amps about 81 Watts

 

Now compare this with the same PoE switch, which has 450 Watts Power supply! For Home Voice lab I would and use go no PoE switch and use IP phones with Power Adapters. save Energy? Yes Yes.

 

This document was generated from the following discussion: GNS3 Testing IN Progress !

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