How can I do it in either of them?
in PT you can connect 2 PTs together on seperate PCs but not to ISP;
you can do it to GNS3 via physical NIC on PC. Use a Cloud in GNS3
What are you trying to do ?
we had good topic on this .... searching...
A real ISP or a make believe ISP for the lab?
maybe this will help you
or get my file for GNS3
I'm trying to simulate an ISP connected to a router, and the router is connected to a PC. I don't really know what to do on packet tracer, whether to connect a modem to the router and then connect the modem to the cloud or just connect the cloud to the router. and after connecting the router to the cloud, how to configure the cloud? I can't give it an ip or anything.
and on GNS3 I really don't know what to do....
yes, you can do this in PT. Just setup a router to act as the ISP and configure different loopback to represent different networks.
Please see my PT files under my profile. I have a couple of PT .pkt files to practice with as well as some .pka file to test your skills. Give them a try.
Let me know if there are any other labs you would like to see. I would be more than happy to lab them up.
Thanks a lot for your answer, but I have one question.
configure different loopback to represent different networks
What does that mean? I'm sorry I'm just a novice and I'm self-learning also so I might not be informed enough...
with GNS3, Internet traffic can be routed thru your GNS3 router to your PC.
so when you open this site, goes thru GNS3 to the Internet;
is this what you want ?
Martin i have a small doubt here , i connected my systems interface in gns3 ,
i can ping and telnet to all the devices in my lan from gns3 router but i couldnt ping beyond my lan switch , i dont know whether it works to enter into internet or not..
i think it works but why couldn't i ping the internet(example:22.214.171.124)
what is your setup ? pings works both ways; there must be way back to you;
any Firewall ?
there are 2 ways to set up this and it depends on whether you have Advanced router/NAT between your cable modem and gns3/PC, like I have my Linksys setup (see pic in https://learningnetwork.cisco.com/thread/27152);
the other way is direct connection of gns3 router to cable modem;
set up router with dhcp ip address and dns; just like a PC is getting IP form ISP.
did you watch youtube ?
Yes, i watched it ...
Thats a simple setup martin,here i m using public ips which i have ...here the issue is i configured the router interface in the same subnet and i tried pinging between these to and my switch also but i coudn't ping the internet from the router
i checked with my pc i can ping the internet from command prompt of my pc ....
and also i observed some duplex mismatch message but i dont think that it is preventing that one
*Mar 1 01:03:46.839: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/0 (not half duplex), with MAATDL-BZONE-OFF-03 24 (half duplex)."
In response to post#7
Sorry for the delay in responding. Loopback interfaces are always up, so you can create these to simulate "real" networks.
Martin, is correct. With GNS3 you can actually connect real equipment to the PC running GNS3 and therefore connect a "real" ISP as well as simulate one. Cisco PT can not do this, you can only simulate a real ISP.
Just watchout if using private IP on the GNS3 network, make sure you have a NAT device as Martin mentioned. He is using his Linksys for this, as am I at my home. Martin has a lot of GNS3 labs under his profile so be sure to check them out. Good stuff!!
So are you trying to "simulate" an ISP or are you trying to connect your GNS3 network to your home network and the "real" Internet? You mentioned "simulate" in one of your earlier posts.
You mention you are using public IPs. Have these been assigned to you? As Martin said, ping is a two-way street. Do you have a path back to you from the Internet? Do ping tests from your GNS3 network to your real LAN. Then to the real GW. Find out where the pings fail. and you will find the device that is the cause of the problem.
If you can post a topology of the GNS3 network and how it connects to your real network and the ISP connection, I am sure we could help you out.
I am trying to connect my GNS network to the "real network"..yeah these public ips are assigned to me..
Brain if i can able to ping from pc(real pc) then it should be able to ping from GNS3 router also right?