Tuesday 3 December 2019

Port Mirroring in Junos

So sometimes, the manual isn't quite detailed enough...

At the moment, our telephony people are having some issues with various things like handsets logging themselves out under certain conditions.

Vendor support has requested packet captures, and rather than schlepping around to the four corners of campus, dropping off laptops by each switch stack, I thought "wait, Junos does port mirroring, and it looks straightforward".

It is, and it isn't...