Enabling and disabling PVST filters on ports


no spanning-tree port-list pvst-filter

Enables or disables PVST filters on the port(s) specified. The command indicates which ports are not expected to receive any PVST BPDUs.

Default: Disabled on all ports

Enabling PVST filtering on a port

switch(config)# spanning-tree 8 pvst-filter

Warning: The BPDU filter allows the port to go into a continuousforwarding mode and spanning-tree will not interfere, even if the port would cause a loop to form in the network topology.
If you suddenly experience high traffic load, disable the port and reconfigure the BPDU filter with the CLI command(s):
            "no spanning-tree PORT_LIST bpdu-filter"
            "no spanning-tree PORT_LIST pvst-filter"