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Tom Hollingsworth
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With the advent of software defined networking (SDN) and the move to incorporate automation, orchestration, and extensive programmability into modern network design, it could easily be argued that programming is a must-have skill. Many networking…

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There’s a lot of work that’s been done recently to bring the CCIE up to modern network standards. Yusuf and his team are working hard to incorporate new concepts into the written exam. Candidates are broadening their horizons and picking up new ideas as…

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Systems are inherently reliable. Until they aren’t. On a long enough timeline, even the most reliable system will eventually fail. How you manage that failure says a lot about the way your build your system or application. So, why is it then that we’re so…

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Words mean things! — Justin Warren (@JPWarren)   As a reader of my blog, you know that words are my tradecraft. Picking the right word to describe a topic or a technical idea is very important. Using incorrect grammar can cause misunderstandings and lead…

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Networking is done. The way you have done things before is finished. The writing has been on the wall for quite a while now. But it’s going to be a good thing. The Old Standard Networking purchase models look much different today than they have in the…

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In CCIE news this week, Cisco has raised the price of their exams across the board. The CCNA has moved up to $325, and the CCIE Written moves from $400 to $450. It goes without saying that there is quite a bit of outcry in the community. Why is the price…

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It started somewhat innocently. Cisco released a field notice that there was an issue with some signal clocks on a range of their networking devices. This by itself was a huge issue. There had been rumblings about this issue for a few months. Some…

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Wireless is hard. When you’re putting together large deployments of access points in challenging environments with tons of security on top of it all you realize the difficulty. That’s why most major wireless deployments require a lot of time, planning,…

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SD-WAN has finally arrived. We’re not longer talking about it in terms of whether or not it is a thing that’s going to happen, but a thing that will happen provided the budgets are right. But while the concept of SD-WAN is certain, one must start to…

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Making ASICs is a tough task. We learned this last year at Cisco Live Berlin from this conversation with Dave Zacks: Cisco spent 6 years building the UADP ASIC that powers their next generation switches. They solved a lot of the issues with ASIC design…
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