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Technical Configuration Guide v2.0 NN48500-559
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10.4 BPDU Blocking
There are certain scenarios in a bridged (switched) environment when the user may wish to drop
incoming BPDUs on a specific interface. When enabled, the BPDU Blocker QoS Application will
drop traffic with a specific multicast destination MAC address. Currently targeted BPDU multicast
destination addresses are 01:80:c2:00:00:00 and 01:00:0c:cc:cc:cd.
The following commands are used to enable BPDU blocking
• 5530-24TFD(config)#interface fastEthernet all
• 5530-24TFD(config-if)#
qos bpdu blocker port <port #> enable