movq

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In-reply-to » Spent the last few days debugging network issues at work.

@prologic@twtxt.net In this particular case: Figuring out why a switch decided not to forward ARP broadcasts to certain switch ports. Like, you connect two devices to the switch ports 3 and 4 and they can ping each other – but when you move one of them to port 5, no ping anymore. So, rather low-level stuff.

Or, we have another switch that intermittently doesn’t respond on its management IP anymore (even when you connect your laptop directly to the switch with no other networking hardware in between). I still haven’t figured out this issue.

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Spent the last few days debugging network issues at work.

Exhausting. You never get a full picture. You poke a little here, poke a little there, … Form a hypothesis and test it. Eventually, maybe, you can narrow it down a bit to some segment or even some component.

A very time consuming process. Even more so if you try not to cause downtimes for your users.

I want a magical device that allows me to look inside a cable/fibre.

But hey, at least we got rid of a bunch of Cisco switches in the process. So there’s that.

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