UMN:CLI User ManualV5812G254However, BPDU guard can be corrupted by unexpected cause. In this case, the edge portis blocked immediately and remains at this state until user recovers it. To prevent thisproblem, the V5812G provides BPDU guard auto-recovery function. When an edge port isdown for BPDU packet, which came from other switch, the port is recovered automaticallyafter configured time.To enable BPDU guard auto recovery, use the following command.Command Mode Descriptionstp bpdu-guard auto-recoveryBridgeEnables BPDU guard auto recovery on the switch.stp bpdu-guard auto-recovery-time <10-1000000> Enables BPDU guard auto recovery time.To disable BPDU guard auto recovery, use the following command.Command Mode Descriptionno stp bpdu-guard auto-recovery Bridge Disables BPDU guard auto recovery.no stp bpdu-guard auto-recovery-timeTo recover a blocked port by manually, use the following command.Command Mode Descriptionstp bpdu-guard err-recoveryPORTS Bridge Recovers a blocked port by manually.To display the changed status of port by BPDU guard, use the following command.Command Mode Descriptionshow stp bpdu-guard detect Bridge Shows the status of port by BPDU guard.8.3.9.7 Displaying BPDU ConfigurationTo display the configuration for BPDU, use the following command.Command Mode Descriptionshow stp EnableGlobalBridgeShows a configuration for BPDU for STP, RSTP andMSTP.show stp pvst VLAN-RANGE[all | PORTS] [detail]Shows a configuration for BPDU for PVSTP andPVRSTP.8.3.10 Sample ConfigurationBackup RouteWhen you design Layer 2 network, you must consider backup route for stable STPnetwork. This is to prevent network corruption when just one additional path exits.
