Cisco Live US 2018
Cisco Live Orlando has wrapped up, at least for me, and I can relax until Cisco Live Europe in...
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Two Years of Ten Years a CCIE
Two years ago I published my Ten Years a CCIE series. Actually, I had written the series a couple years before I published it, but as I say in my introduction to the series, I felt it was a bit self-indulgent an uninteresting,...
Read MoreTAC Tales #14: Stuck in Active
Everyone who’s worked in TAC can tell you their nightmare case–the type of case that, when they see it in the queue, makes them want to run away, take an unexpected lunch break, and hope some other engineer grabs...
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Book Sprint
I’m somewhat recovered from an exhausting week. I spent last week with a team of 10 others...
Read MoreTAC Tales #13: All Zeros
A common approach for TAC engineers and customers working on a tough case is to just “throw hardware at it.” Sometimes this can be laziness: why troubleshoot a complex problem when you can send an RMA, swap out a...
Read MoreWhere I’ve been, and what a TME is
Jesse, a recent commentor, asked why I haven’t been posting much lately. In fact, my last post was August of 2017. Well, there are several reasons I don’t post much these days. In part, I’m not convinced...
Read MoreTAC Tales #12: SACK of trouble
When I first started at Cisco TAC, I was assigned to a team that handled only enterprise customers. One of the first things my boss said to me when I started there was “At Cisco, if you don’t like your boss or your...
Read MoreIn Praise of Vendor Lock-In
There is one really nice thing about having a blog whose readership consists mainly of car insurance spambots: I don’t have to feel guilty when I don’t post anything for a while. I had started a series on...
Read MoreTAC Tales #11: Full up
No customer is happy if they have to reboot one of their Internet-facing routers periodically, and this was one of our biggest customers. (At HTTS, they were all big customers.) This customer had a GSR connecting to the...
Read MoreProgrammability for Network Engineers
Since I finished my series of articles on the CCIE, I thought I would kick off a new series on my current area of focus: network programmability. The past year at Cisco, programmability and automation have been my focus, first...
Read MoreTAC Tales #10: Out to Lunch
When you work at TAC, you are required to be “on-shift” for 4 hours each day. This doesn’t mean that you work four hours a day, just that you are actively taking cases only four hours per day. The other four...
Read MoreCisco DCNM 10 Overlay Provisioning Part 2
Introduction My role at Cisco is transitioning to enterprise so I won’t be working on Nexus switches much any more. I figured it would be a good time to finish this article on DCNM. In my previous article, I talked about...
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