jed@neckercube.com   |   Experience & Credentials

 LinkedIn: jedcasey     Twitter: @Wax_Trax

 GitHub: Wax-Trax    GoodReads

Most Recent Posts:

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 found the exam to be fairly easy, but once again ...
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Connecting Multicast Islands with GRE

This post covers how to join together devices requiring multicast connectivity across networks that do not support multicast. This situation is common when the Internet is used for transport, and even in private networks such as MPLS L3VPN if the carrier does not support multicast (or you decided not to pay extra for that service). I will be using Cisco ...
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Easy Cisco VPLS L2VPN Automated Lab

In this lab, I cover automating the setup for a simple 3-customer VPLS L2VPN. I detail the basic configuration components, as well as automating the deployment to alleviate repetitive configuration commands. Like many technologies, it is best to start simple to build a foundation of knowledge before moving on to a more advanced depth. This lab is meant to be ...
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Today I Passed the CCNA Service Provider Exam

Or the CCNP Jr., as I've come to call it. Studying for this exam provides a nice overview of various service provider technologies and general architecture, as well as a glimpse into Cisco's service provider portfolio, including the IOS-XR operating system. This certification consists of two separate exams (SPNGN1 and SPNGN2), with no prerequisites. Several of Cisco's CCNA-level tracks require ...
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IPv6 6RD with Ubiquiti and DD-WRT

This posts walks through how to create an isolated network which has access to the IPv6 Internet via 6RD using Ubiquiti EdgeMax equipment and a router running DD-WRT. 6RD (Rapid Deployment) is a method to reach the IPv6 Internet by tunneling over an IPv4 network, similar to 6to4. While 6to4 is primarily used to connect different "IPv6 islands" together, 6RD was designed to ...
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Today I Passed the CCNA Wireless Exam

Wait, wasn't I just studying for the CCIE? After my lab attempt, I decided it was important to branch out a little bit and develop a more T-shaped skillset. I came from a generalist background (read jack-of-all-trades), then specialized in expert-level routing & switching which serves as a great foundation for other networking and infrastructure-related skills. Passing the CCNA Wireless ...
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MikroTik Automated MPLS L3VPN Lab

I am breaking out of the Cisco wheelhouse a little bit by using MikroTik RouterOS to build on my previous work of automating a base-level lab configuration. Working with another network operating system that uses a completely different syntax allows you to learn the various protocols in a more meaningful way (in my opinion). When you configure a single vendor's ...
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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 relatively inexpensive and uncomplicated enterprise DR plan that can be ...
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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 exam in August 2017. It was a huge moment for ...
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Using Bridge Domain Interfaces on Cisco ASR-1K Routers

I am replacing an old Cisco 3945 router with a new ASR-1001X. The 3945, which has three gigabit Ethernet interfaces, has one connection to two service providers, and a single tagged link back to the network core carrying the traffic of a few different IP subnets. The ASR-1001X has six gigabit Ethernet interfaces, so when replacing the 3945 I wanted ...
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About Me:

I am currently happily employed as a Senior Network Engineer for a midsize enterprise in the healthcare industry, but am interested in working on service provider networks. 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 service provider technologies, 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). This included segregating production and DR traffic with VRFs and BGP filtering.

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. This includes working with Cisco’s Nexus datacenter series switches running NX-OS.

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.

I demonstrated stepping outside of the Cisco world to configure service provider core MPLS L3VPNs on MikroTik, and client-side IPv6 6RD on Ubiquiti.

Credentials:

  • University of Central Florida (UCF):
    Bachelor of Science: Information Systems
  • Cisco: CCNP Routing & Switching
  • Cisco: CCDP Network Architecture
  • Cisco: CCNA Service Provider
  • Cisco: CCNA Wireless
  • Cisco: CCDA Network Design
  • Cisco: CCNA Routing & Switching
  • Juniper: JNCIA
  • VMware: VCP-DCV
  • Certified Wireless Network Professional (CWNP): CWNA

Completed Training:

  • Cisco CCIE Expert Level Training (Cisco 360):
    25 full non-graded & 15 full graded 8-hour CCIE practical labs

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.