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Accepted
Andre
Asked: 2011-03-06 12:24:51 +0800 CST

Cisco BPDUGUARD and BDPUFILTER

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What happen if I have both ENABLED spanning-tree BPDUFILTER and BPBDUGUARD on a specific port?

networking cisco stp cisco-catalyst

1 Answers

  1. Best Answer

    If you place a switch-port into this configuration:

    spanning-tree bpdufilter enable
spanning-tree bpduguard enable

    bpdufilter will take precedence and bpdugard will not be functional.

    Cisco documentaion here confims this with this statement

    "You can override the setting of the no spanning-tree portfast bpdufilter default global configuration command by using the spanning-tree bpdufilter enable interface configuration command."

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