Building network automation solutions

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Category: certifications

From CCNA to SDN: Interview with David Bombal

A few weeks ago, I had an interesting video chat with David Bombal in which we covered a wide variety of topics including

  • What would you do if you started networking today?
  • How do you increase the value of your knowledge?
  • Networking hasn’t changed in the last 40 years and whatever you learn about networking will still be valid 20 years from now;
  • Why should I learn and implement network automation?
  • When should I start learning about network automation?

Note: David posted the whole list of topics with timestamps in the pinned comment under the video.

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Should I Take CCIE DC or ipSpace.net Data Center Online Course?

Got this question from a networking engineer who couldn’t decide whether to go for CCIE Data Center certification or attend my Building Next-Generation Data Center online course:

I am considering pursuing CCIE DC. I found your Next-Generation DC course very interesting. Now I am bit confused trying to decide whether to start with CCIE DC first and then do your course.

You might be in a similar position, so here’s what I told him.

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How to Become a Better Networking Engineer

Got an interesting set of questions from one of my readers. He started with:

I really like networks but I don't know if I am doing enough for this community. Most of my work is involved with technologies which are already discovered by people and I am not really satisfied with it.

Well, first you want to decide whether you want to be (primarily) a researcher (focusing on discovering new stuff), an engineer (mostly figuring out how to build useful things by using existing stuff), or an administrator (configuring stuff).

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Hard Truths Not Taught in Schools

J Metz published a great article describing six hard truths not taught in school. As all good things should come in 7-tuples, here’s another one I was told ages ago when I was a young hotshot full of myself:

Professions were created for a reason – they enable people to do the work they’re qualified to do.

Needless to say, it took me decades to fully understand its implications.

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Few Secrets of Successful Learning: Focus, Small Chunks, and Sleep

One of my readers sent me a few questions about the leaf-and-spine fabric architectures webinar because (in his own words)

We have some projects 100% matching these contents and it would be really useful this extra feedback, not just from consultants and manufacturer.

When I explained the details he followed up with:

Now, I expect in one or two weeks to find some days to be able to follow this webinar in a profitable way, not just between phone calls and emails.

That’s not how it works.

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We Need to Educate Our Peers

Failure to use DNS, IP addresses embedded in the code, ignoring the physical realities (like bandwidth and latency)… the list of mistakes that eventually get dumped into networking engineer’s lap is depressing.

It’s easy to reach the conclusion that the people making those mistakes must be stupid or lazy… but in reality most of them never realized they were causing someone else problems because nobody told them so.

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Learn to Speak Your Peer’s Language with ipSpace.net Webinars

One of the reasons I started creating ipSpace.net webinars was to help networking engineers grasp the basics of adjacent technologies like virtualization and storage. Based on feedback from an attendee of my Introduction to Virtual Networking webinar it works:

I am completely on the Network side of the house and understand what I need to build for Storage/Data replication, but I really never thoroughly understood why. This allowed me to have a coherent discussion with my counterparts in DB and Storage and some of the pitfalls that can occur if we try to cowboy the network design.

Recommendation: if you have a similar problem, start with Introduction to Virtual Networking and continue with Data Center 3.0 webinar.

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The Lack of Historic Knowledge Is so Frustrating

Every time I’m explaining the intricacies of new technologies to networking engineers, I try to use analogies with older well-known technologies, trying to make it simpler to grasp the architectural constraints of the shiny new stuff.

Unfortunately, most engineers younger than ~35 years have no idea what I’m talking about – all they know are Ethernet, IP and MPLS.

Just to give you an example – here’s a slide from my SDN workshop.

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How Did You Learn So Much About Networking?

One of my readers sent me a heartfelt email that teleported me 35 years down the memory lane. He wrote:

I only recently stumbled upon your blog and, well, it hurt. It's incredible the amount of topics you are able to talk about extensively and how you can dissect and find interesting stuff in even the most basic concepts.
May I humble ask how on earth can you know all of the things you know, with such attention to detail? Have you been gifted with an excellent memory, magical diet, or is it just magic?

Short answer: hard work and compound interest.

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