HP Cisco MDS 9120 Cisco Nexus 5000 Series Command Reference Release 4.0(1a)N2( - Page 195

Chapter 2 Ethernet Commands spanning-tree bpdufilter Send comments to [email protected] spanning-tree bpdufilter To enable BPDU Filtering on the interface, use the spanning-tree bpdufilter command. To return to the default settings, use the no form of this command. spanning-tree bpdufilter {enable | disable} no spanning-tree bpdufilter Syntax Description enable disable Enables BPDU Filtering on this interface. Disables BPDU Filtering on this interface. Command Default The setting that is already configured when you enter the spanning-tree port type edge bpdufilter default command. Command Modes Interface configuration mode Command History Release 4.0(0)N1(1a) Modification This command was introduced. Usage Guidelines Entering the spanning-tree bpdufilter enable command to enable BPDU Filtering overrides the spanning tree edge port configuration. That port then returns to the normal spanning tree port type and moves through the normal spanning tree transitions. Caution Be careful when you enter the spanning-tree bpdufilter enable command on specified interfaces. Explicitly configuring BPDU Filtering on a port this is not connected to a host can cause a bridging loop because the port will ignore any BPDU that it receives, and the port moves to the STP forwarding state. Use the spanning-tree port type edge bpdufilter default command to enable BPDU Filtering on all spanning tree edge ports. Examples This example shows how to explicitly enable BPDU Filtering on the Ethernet spanning tree edge port 1/4: switch (config)# interface ethernet 1/4 switch(config-if)# spanning-tree bpdufilter enable Related Commands Command show spanning-tree summary Description Displays information about the spanning tree state. OL-16599-01 Cisco Nexus 5000 Series Command Reference 2-47