jed@neckercube.com   |   Experience & Credentials

 LinkedIn: jedcasey     Twitter: @Wax_Trax

 GitHub: Wax-Trax    GoodReads

Most Recent Posts:

CCIE FlashCard Deck for R&S v5.1

Today I have decided to finally release the flashcard deck that I created for myself in order to pass the written portion of the CCIE Routing & Switching v5.1 exam. This deck represents many months and hundreds (if not thousands) of hours of study effort. After passing the exam, I had considered putting together some kind of study package, but ...
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Retrospection and the Future: Still Studying for the CCIE Lab

Last October marked the five-year anniversary of my blog. I had started an introspective post looking back over the past five years, but the truth is, I feel like I spend more time looking forward than backward at this point. That’s not to say I haven’t come quite a long way in the past five years. I sometimes need reminding ...
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Today I Passed the CCIE R&S v5.1 Written Exam

This is a big step for me, and has been a long time coming. I know I haven't "won" anything yet (I'm not going to be one of those people who put "CCIE written" on my resumé), but at the same time, passing this exam is a major milestone for me. The topic scope for the CCIE written exam is ...
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Cisco CCNP SWITCH Topics

Last year, I was not yet ready to take the CCIE R&S written exam, but my CCNP was about to expire. I decided to renew by taking the SWITCH exam, which had been revised since my original CCNP certification. I continued to study for the CCIE, but I focused my attention on topics that were on the SWITCH exam. As ...
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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 retention. But what about static knowledge at-rest? Knowledge Management: Just ...
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On Learning: Flash Card Review

This part covers what I have learned about reviewing the flash cards. Flash Card Review: The premise of Anki (and related types of software) is spaced repetitions. To get the most out of the software, you need to make yourself get in the habit of reviewing your cards every single day. When you stop reviewing, you very quickly start to ...
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On Learning: Creating Meaningful Flash Cards

This is part one of a three-part series. I still study for the CCIE R&S. I study for it in some form (and often multiple forms) every single day. My attitude, thought processes, and learning process has changed quite significantly in the last year and a half. My experience is growing, and timelines are starting to become more concrete. I've ...
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How to Install Oxidized for Network Configuration Backup

Oxidized is an open-source project started by Saku Ytti and Samer Abdel-Hafez as an alternative to the very popular RANCID software. A little over a year ago, I created a RANCID server to backup the configuration of my network devices. It has been a good, stable piece of software that has been doing the job very well across hundreds of devices. When I set ...
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Today I Passed the CWNA Exam

I have been involved with both wired and wireless networking for many years. My original wireless setups were from the early 2000s, shortly after 802.11b became popular. I remember at one point I had a PCMCIA card with a pigtail and external antenna attached to it. As my career started taking a focus more toward networking, I became intimately familiar ...
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General Network Challenges, and IP/TCP/UDP Operations

Having fundamental knowledge of what affects TCP, UDP, and IP itself helps you to better troubleshoot the network when things go wrong. I feel like most of the lower-level network-oriented certifications barely touch on these topics, if at all. However, the current Cisco CCNP and CCIE Routing & Switching exams do expect you to know this. This post is geared ...
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About Me:

I am currently employed as a Senior Network Engineer for a midsize enterprise in the healthcare industry. I started out in SMB networking and have been working on enterprise networks for nearly five years, during which I have gained an enormous amount of practical knowledge and experience.

Ivan Pepelnjak wrote an excellent piece “On I-Shaped and T-Shaped Skills” which highly influenced the things I have decided to focus on. I enjoy “routing and switching” which is why I worked to obtain skills to the expert level in that area. Yet, I am constantly learning and rounding out my skillset in other areas as well, such as the fundamentals of automation, wireless, datacenter technologies, and more.

The computer network represents the arteries of the modern business environment, with the data flowing across as the lifeblood. By having expert level networking knowledge, and fundamental knowledge of what interacts with the network as a whole, I am in a better position to help an organization thrive on produced and consumed data.

Experience:

I passed the Cisco CCIE Routing & Switching written exam, and later attempted the lab exam. I gained many skills that go far above and beyond the CCNP level, including multicast, QoS, and MPLS experience (both enterprise and service provider sides).

As part of my study, I released to the public some of the study materials I had created for myself, including a deep, detailed mind-map, a collection of documentation links based on topics, and a collection of nearly 3500 flash cards.

I designed and integrated a VeloCloud-based SD-WAN environment to migrate away from a 350-site MPLS L3VPN WAN. This included a 15-site trial/PoC environment from one provider, and eventually a full production rollout using a different provider. During the migration phase, there were at one point two separate MPLS L3VPNs, two separate SD-WAN environments, two datacenters, and 350 sites supported simultaneously. I used BGP at the datacenters and various kinds of filtering and BGP policy adjustments to harmoniously stitch all of the environments together for full connectivity between all sites.

I designed and implemented the network portion of an enterprise disaster recovery plan (similar to but slightly more complex than my post Easy Disaster Recovery Plan)

I participated in the networking aspects of moving an in-house datacenter to a colocation facility, and detailed the aspects of maintaining connectivity between the old and new datacenters during the migration and lessons learned during the process.

Miscellaneous:

I wrote a 3-part series On Learning describing the methods I discovered which work best for me to learn, retain, and manage large amounts of knowledge.

Using Bridge Domain Interfaces on Cisco ASR-1K Routers

Using Python, YAML, Jinja2 and multithreading to rapidly generate and push configurations to multiple devices. One of the ways I used this knowledge in production was to generate a large configuration set of firewall rule changes.

My thoughts on network automation in general (2018)

I renewed my CCNP certification in 2016 and released two posts, one on various SWITCH topics, and one on various ROUTE topics.

I needed a simple configuration backup system for the hundreds of Cisco routers and switches on my network. I initially used RANCID, but then learned how to use Oxidized.

Current Credentials:

  • University of Central Florida (UCF):
    Bachelor of Science: Information Systems
  • Certified Wireless Network Professional (CWNP): CWNA
  • Cisco: CCNP Routing & Switching
  • Cisco: CCDP Network Design
  • Cisco: CCNA Wireless
  • Cisco: CCDA Network Design
  • Cisco: CCNA Routing & Switching

Previous Credentials:

  • Juniper: JNCIA
  • VMware: VCP-DCV

Contact Information:

jed@neckercube.com   |   Experience & Credentials

 LinkedIn: jedcasey     Twitter: @Wax_Trax

 GitHub: Wax-Trax     GoodReads

I am open to new challenges and opportunities, particularly in the service provider vertical.