Hi all, I had some issues with the site and I haven’t blogged as much lately as I would have hoped but I wanted to wish you a Merry Christmas and send you a little gift from Martin Duggan. Martin
Certification – Major News for Expert Level Recertification
Certification – Major News for Expert Level Recertification Everyone holding an expert level Cisco certification knows the pain of recertifying. Recertification today is achieved by taking any expert level written exam which means you can take the written in the
CCDE – The CCDE Mindset
This post was written to help CCDE candidates get into the right mindset but is very applicable to network architects and network engineers in general. We humans tend to have a lot of bias. Sometimes it’s based on experience but
CCDE – CCDE Practical Studies – Practice Lab 1 by Martin Duggan
One of the most challenging aspects when studying for the CCDE practical is to find scenarios to practice with. It’s difficult to find a scenario that has enough background information, requirements and constraints to emulate the experience of the real
CCDE – My Journey To Becoming Swedens 2nd CCDE
On May the 17th I passed the CCDE practical in Madrid and became Swedens 2nd CCDE, CCDE #20160011. This post describes my journey to passing the CCDE practical in my 1st attempt and the materials that I used to do
CCDE – I passed the CCDE Practical in Madrid!
Hi everyone. I’ve not been posting lately because I have been studying very hard for the CCDE practical. Passed the lab in Madrid? Isn’t this guy from the North? I was supposed to take this exam in Frankfurt on Tuesday
CCDE – Carrier Supporting Carrier
Introduction In the previous post I showed some of the options to interconnect two AS so that a customer can buy a VPN in two different locations from two different SPs. There is another technology called Carrier Supporting Carrier or
CCDE – Inter AS L3 VPNs
Introduction Sometimes a customer needs a L3 VPN between two locations where the same SP is not present. This can be on a national or international basis. It would be possible to buy an Internet circuit and run an overlay
CCDE – BGP Confederations
Introduction BGP Confederations are one of two tools a network designer has to work around the full mesh requirement of iBGP. BGP confederations are defined in RFC 5065 which obsoletes RFC 3065. This is how the RFC defines BGP confederations:
CCDE – BGP Convergence
Introduction This post will look at the steps involved in BGP convergence and how it interacts with IGP to converge. Any network of scale will use route reflectors (RRs) so this post will focus on deployments with RRs. Networks running