Networking in the cloud is impressive. Building redundant internet access is as easy as attaching an internet gateway (IGW) to your VPC. In an on-premises network we would have to build VLANs, subnets, IGPs, possibly HSRP and BGP etc. This
Snowflake Networks
Snowflake networks, sounds like a good name for a network design company, but this is not what this post is about. Are you familiar with the concept of a snowflake network? This terminology comes from the notion that each snowflake
CCIE Datacenter Updated to Version 2.1
Last year Cisco announced that they would revise their certifications more often and in smaller increments instead of doing only major revisions which had problems keeping up with the pace of the industry. This is exactly what they are now
Most Important Skills in Networking
It’s easy to get blinded these days by all the talk about cloud, SDN and automation leading both new and existing people in networking to make decisions in their career which may not be the best ones long term. I’ve
The Network Architect Part 2
I got some great comments from my readers on the first part of this post. I love engaging with readers! So I thought I would write a part two to explain some of my thinking which I described in some
The Network Architect
What’s the difference between a network architect and a network designer? What is network architecture and what is network design? These are questions I asked myself a couple of years ago and that I get asked frequently from others. The
General – Taking the Long Road
As we start the new year, I started thinking about something. Why do people think it’s acceptable to take shortcuts in their IT career? Is it because people don’t see the true effect of their work? Or is the cheating
General – Merry Christmas And A Little Gift
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
General – Advice on Numbering Policies in Networking
There are several situations where we need to write some form of policy such as QoS, routing policies used in for example redistribution, filtering and policy-based routing, dot1x and so on. Lately I had to update a policy used by
General – Challenges in Load Balancing Traffic
For the last year I have been working a lot with IWAN which is Cisco’s SD-WAN implementation (before Viptela acquisition). One of the important aspects of SD-WAN is to be able to load balance the traffic. Load balancing traffic is