STP enchancement question...

[jimmysands73_2]

Following:

https://supportforums.cisco.com/thread/2111425?tstart=0

I saw this on an interface...

spanning-tree bpdufilter enable

spanning-tree bpduguard enable

If I understand, BPDUGuard puts a port into into err-disable state if any BPDUs come in on that port.

and...BPDUFilter (on an interface level) ignores BPDUs.

So, if you ignore BPDUs how then can an interface be put into error disabled state?  To me it can not, because the filter prohibits them from being seen.

Thank you,

Jim

[cadet alain · Accepted solution]

Hi,

you're correct the BPDU guard config will have no effect in this case.

Regards.

Alain.