What’s new and exciting with EIGRP (Enhanced Interior Gateway Routing Protocol)? Actually, lots…  First a bit a background on EIGRP.

EIGRP is an advanced distance vector routing protocol used extensively by enterprise customers.  It is very popular because it is simple to deploy and support. Some major attributes are:

• EIGRP does not mandate many network design requirements and is therefore perceived as “forgiving” and “flexible”.  For example, EIGRP does not require support for multiple routing sub-domains or Areas.
• While route summarization is a recommended best practice to minimize route table size, it is optional with EIGRP.
• EIGRP can scale to support thousands of routers in a Hub and Spoke configuration.  The Hub and Spoke design is especially popular in WAN networks.

For additional information on EIGRP, please click here.  There is also a great BLOG that compares EIGRP and OSPF that I think you will find informative and is posted here.

While EIGRP has a large customer following, some customers have hesitated because of concerns of EIGRP being “proprietary”, which would prevent them from multi-vendor network support.  In some cases this has caused customers to design their networks to limit usage of EIGRP, even though they would like to deploy it ubiquitously.  One result has been non-optimal network design and traffic flow, resulting from multiple IGP (Interior Gateway Protocol) redistribution points.

That brings me back to what is new and exciting with EIGRP. Read More »

Tags: EIGRP, Enhanced Interior Gateway Protocol, ietf, ietf working group, IGP, Interior Gateway Protocol, ipv4, IPv6, IPv6 deployment, OSPF, WAN, WAN networks

Welcome to the Cisco Sizzle! Each month, we’re rounding up the best of the best from across our social media channels for your reading pleasure. From the most read blog posts to the top engaging content on Facebook or LinkedIn, catch up on things you might have missed, or on the articles you just want to see again, all in one place.

Let’s take a look back at the top content from February…

The Internet of Everything Economy
Cisco CEO John Chambers discusses the possibilities of the Internet of Everything Economy and the $14.4 trillion market opportunity for companies and industries worldwide over the next 10 years.

EIGRP: Enhanced Interior Gateway Routing Protocol
Chris Le and Donnie Savage discussed the reasons behind Cisco’s opening up EIGRP as an informational draft, how this benefits customers, and Cisco’s plan moving forward. Learn more: http://cs.co/jlbYTeigrp.

Cisco StadiumVision Mobile
Who watched the Super Bowl last month? Learn how Cisco is transforming the fan experience with Cisco StadiumVision Mobile, a groundbreaking solution that delivers live video to fans’ mobile devices to create an entirely new experience in sports and entertainment venues.

Super Wi-Fi
What connections could a Public Super Wi-Fi bring to the Internet of Everything?

Collaboration: Cisco’s Approach
What really matters in collaboration? In the first of a series of blog posts, Cisco’s Rowan Trollope starts a frank conversation about what’s top of mind for IT, how Cisco is addressing these needs and how Microsoft’s approach is not hitting the mark.

Stay tuned for next month’s edition of the Cisco Sizzle for even more great content!

Tags: Barclays Center, Bring your Own Device (BYOD), Brooklyn Nets, Cisco Connected Stadium Wi-Fi, Cisco IBSG, Cisco Sports & Entertaiment, cloud collaboration, collaboration, conferencing, EIGRP, Enhanced Interior Gateway Routing Protocol, instant messaging, Internet of Everything, IoE, Real Madrid, research, Sporting KC, StadiumVision Mobile, video, voip

It is not often you get a peek in the behind scenes of the Cisco Employees who put their personal lives on hold to support a major event like Cisco Live.  I am very sure this blog will not do justice to sharing one person’s perspective, but lets give it a try shall we?

Read More »

Tags: challenges, Cisco Live London, configuration, demonstration, EIGRP, OSPF, routing and switching

I am sitting and reflecting here at the start of Cisco Live London. As I walk the halls, I continue to be amazed by the size, depth, and breadth of this event. Networking continues to grow, and thousands of people are eager to come together to see the latest. Read More »

Tags: #CLEUR, cisco live, Cisco Live London, cisco live london 2013, EIGRP, human connections, human network, identity, Identity Connector, mobility, ONE, onePK, SDN

First a bit of disclosure.  I have worked for Cisco over 15 years, much of that time as the lead developer for EIGRP. I think I understand its strengths and weakness’ very well, and have spent a great deal of energy minimizing them.

I often find comparing protocols similar to the old “tab vs spaces” or “emacs vs vi” wars.  There are valid reasons to choose one over the other and in the grand scheme of things it comes down to a wash; often preference or ‘religion’.  EIGRP seems to victim to this .  I mean where are the “ISIS vs OSPF” debates?  With EIGRP, network engineers that love it – love it. Those that don’t, well they don’t. Arguing its merits often results in an equally long list of “yea but” demerits.

For example, most everyone would agree eigrp is “simple to deploy”, but detractors would argue that simplicity leads to sloppy designs and only though complexity can we force network engineers to “do their job” and design the network properly. Read More »

Tags: Dijkstra, DUAL, EIGRP, IPv6, OSPF