Use of BPDU guard and BPDU filter

[knaik99]

Can we use BPDU guard and BPDU filter command on same switch port along with port-fast as BPDU guard error-disables the port and BPDU filter drops the incoming BPDUs on port so here two action would happen simultaneously

please explain.

[balaji.bandi]

there are some good examples here :

https://community.cisco.com/t5/networking-knowledge-base/importance-of-bpdu-guard-and-bpdu-filter/ta-p/3120465

[David Ruess]

Hello,

After running a small lab it looks like the BPDU filter wins. It will filter our the BPDU before the BPDU guard catches it and keeps the interface in a working order. I would not really recommend this as it seems redundant. If one blocks it there is no need to add another command that does the same thing and shuts down the port. Someone would have to remove the BPDUFilter configuration from the interface manually in order to cause issues on your network.

Hope that helps

-David