Today I Passed the CCNA Industrial Exam

I found the CCNA Industrial certification to be interesting because like the Cisco Network Design certifications (CCDA/CCDP/CCDE), this single certification has quite an overlap of other certifications and technologies. Basic network design, security, wireless, and troubleshooting are added to the industrial networking protocols covered (CIP over EtherNet/IP and PROFINET). I …

Easy Disaster Recovery Plan

DR plans encompass everything from no plan whatsoever (failing to plan is planning to fail), to active/active workloads distributed among several geo-redundant datacenters. This spectrum, just like nearly everything else in business, goes from zero to enormous cost and complexity. In the interest of keeping things simple, I designed a …

My First CCIE Lab Attempt

This is the unabridged version. The abridged version is available on LinkedIn. From the Written… Preparing, Part 1 Preparing, Part 2 Lab Day Part 1: TS Lab Day Part 2: DIAG Lab Day Part 3: CFG Aftermath Onward! From the Written… I passed the CCIE Routing & Switching v5.1 written …

Why Network Automation?

I have been wanting to get a little deeper into some various technologies surrounding MPLS and BGP-based VPNs (beyond basic L3VPN, such L2VPN, QoS, multicast, EVPN, etc.), so I assembled a virtual lab with approximately 30 routers which represent a service provider core and several “customer” sites, along with two …

On Learning: Knowledge Management

For most knowledge-intensive fields of work, including network engineering, you must learn how to manage vast amounts of information if you wish to progress into more advanced levels. The first two articles in this series discuss creating and reviewing flash cards, which through spaced repetitions lead to dramatically increased knowledge …

QoS in Action

Quality of Service is an added-value network infrastructure service that is still very important within the scope of private networks. Some might argue that QoS is not as important as it once was as we start to see more SD-WAN deployments that utilize the general Internet for transport, because the …

The Data Center Move, Part 4

Part 1  |  Part 2  |  Part 3  | Part 4 Over the next couple of weeks, we continued to migrate more portions of the network and less-critical systems over to the new data center. One of the issues we experienced was temporary route instability due to accidentally advertising the …

Anki, My New Love

This post was also featured on PacketPushers.net Until now, I was never one to use flashcards. I could not see their value, and I was too lazy to actually write things down on a paper flashcard (and my handwriting is horrible). I recently discovered a program called Anki. On the surface, …