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VIP Perspectives

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Hi all, This is my first blog, I hope readers will find of value in it. I’m going to be concise and focus on the topic without overwhelming you with lots of explanations, hopefully it will light and welcoming to read.   Today I’m going to talk about NAT exemption. As we know NAT plays a very important role in our networks today. And there are different of types and a bunch of ... Read more

The networking industry is moving at a rapid pace. How does one keep up with all the changes and decide which resources should be used to stay updated? How can one focus on certification studies while staying updated on new technologies?   The above questions are very valid at this time as we see Software Defined Networking (SDN) and Network Function Virtualization (NFV) mentioned in almost ... Read more

Jared

VLANs - It's All a Game of Tag

Posted by Jared Nov 12, 2015

A long time ago in an industry that has rapidly changed, there was the local-area network (LAN).  The LAN was a single broadcast domain where all devices would hear broadcast traffic.  As LANs grew and broadcasts increased, traffic became congested, security threats grew, and segmentation was needed.  The LAN needed to be divided.  In the old days, one could run new ... Read more

Too fast Too furious - who doesn't like speed, especially when we talk about the internet or network connectivity? But the real question is, which is better to have: fast speed or more bandwidth? Although these terms are inter-related, they're not same. As an internet or network user, "fast speed" means a faster rate of data communications. That sounds good, because who doesn't want a fast ... Read more

When I was first getting into IP subnetting, I learned that subnetting was the process of taking an existing network and breaking it up into smaller networks.  When learning subnetting, there were usually 2 questions asked.  I saw these 2 questions in books, worksheets, even interviews. 1) How many hosts do you need in your network? 2) How many networks do you need in your ... Read more

Welcome everyone!   I'm very excited to bring you this interview with CCIE program manager Bruno van de Werve. As you may know I'm a CCIE and I'm very involved in the certification community. I wanted to do this interview with Bruno to give the community some clarity on what's going on with the CCIE program and to counter some views on the exam integrity of the CCIE. There are a lot of ... Read more

This is not typically the space for us Community Managers to ramble on but, for the last two posts, it made sense that we post them. In case you missed it, last month, my teammate Kay Berkel did a great job capturing the VIPs’ experiences at Cisco Live 2015 in San Diego.   For this month’s VIP Blog, we wanted to take a moment to connect with Cisco Designated VIP Milan Rai. Milan ... Read more

One of the many great benefits of attending Cisco Live each year is connecting with the Cisco Learning Network VIPs. Our VIPs offer a fresh and unique perspective of all of the buzz and activity going on during the convention week. Here's a bit of what they had to say:   Daniel Dib: "As always, the Learning@Cisco team was well represented showing demos of the CCIE lab builder, the Cisco ... Read more

Jared

Has Your Person Been Hacked?

Posted by Jared May 29, 2015

First, I would like to thank my fellow VIP, Jay, for a superior blog.  He had great tips about what can be done to help maximize employment opportunity.  Because of the law of opposites, it seems fitting that my blog actually covers minimizing or ending employment opportunity. Let’s start off with a story.   Some time ago, I had the opportunity to take, what I would ... Read more

*DISCLAIMER* THIS POST CONTAINS AN HONEST ASSESSMENT*   Over this past year, I’ve noticed posts coming from members asking about what they should focus on in order to find employment. What I’m commonly noticing is that some of you are getting certified in Cisco technologies that have little or no employment opportunities in your geographic area. Or you are getting certified but ... Read more

Daniel Dib CCIE #37149

Hold the Line

Posted by Daniel Dib CCIE #37149 Apr 16, 2015

SDN isn’t always on time.   There are a lot of buzzwords flying around in the networking world right now. Words like Software Defined Networking (SDN), Network Function Virtualization (NFV), Orchestration, automation.  If you read all the news you may get the impression that you, the network administrator/engineer will be replaced by a Python script any day now. So with some ... Read more

I recently asked the community members to suggest a topic for my next VIP blog. There were many potential options but I ultimately chose to write about Layer 2 security features. Thank you for your participation in the discussion. Perhaps I will use the other suggestions on my future posts.   This is not an extensive study of the various Layer 2 preventative measures but instead a look at ... Read more

As we move into the future, we keep developing advanced technologies and tools to meet new demands and we engineers also need to adapt. Many technologies are being replaced by new ones, like MPLS replacing Frame-Relay, and VoIP taking over PSTN. But it's not just networking but technology in general. Witness the rise of the android and the fall of the giant Nokia.  We have to accommodate and ... Read more

by Darren R. Starr IntroductionAs many of you know, I’m not always all about technology. In fact, I have a lovely soap box which I like to stand upon and shout out to the world about the business side of networking. It is far too common that I encounter IT professionals who explain to me about how their boss won’t allow this type of purchase or another because the capital expenditure ... Read more

This document describes the differences between pointing a static default route to a next-hop IP address or an exit interface in a multi-access network. Packet Forwarding Overview   Transmitting a packet through a router involves three main steps:   1. Routing: Find the outgoing interface for the packet. 2. Switching: Move the packet between the interfaces. 3. Encapsulation: Rebuild ... Read more

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