A few months back I wrote a post about checklists, and promised to follow up with a few of my own. Here is my first attempt at a checklist, trying to address the common pitfalls I see when people are making network changes. I’m not sure I follow all the guidance in the ‘Checklist Manifesto’ but here goes.
I’ve wanted to check out Arista EOS for a while, but didn’t have access to the hardware. I recently learned that Arista had made EOS available as a virtual machine. Arista call this vEOS. By installing the free VirtualBox hypervisor I could get vEOS running on my MacBook. It sounded a bit too easy, but to be fair the process is really well documented. Before I go further I should say that I obtained my copy of vEOS from my…
This post is a short one, but hopefully still valuable. I spent 30 minutes troubleshooting a flapping switch port in the lab this week. I was attaching a headless test device to a 3750G and I couldn’t see the status of the NIC from the tester’s perspective. So one crash cart and a bit of port-swapping later, I found the problem. It was a dodgy switch port and swapping to another port (with identicial config) solved the issue. Then it…