Thursday, May 9, 2019

Why on earth would you use errdisable recovery cause bpduguard

So this command has bitten us on the ass big time, which was implemented by an old team who are no longer here

errdisable recovery cause bpduguard

Someone caused a physical loop which took the network down and BPDU guard did its thing to shutdown the port and stop the loop, but thanks to aforementioned command the port kept coming back up every 30 seconds causing the network to be really unstable.

I'm trying to figure out why recovering a port with bpduguard is even allowed. If BPDU guard kicks in we want that port shot and manual intervention should be the only way to fix it in my opinion.

In what sort of situation is the command useful?



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