Per-VLAN Spanning Tree Plus (PVST+) | 715The values for interface PVST+ parameters are given in the output of the command show spanning-treepvst, as shown in Figure 34-4.Configure an EdgePortThe EdgePort feature enables interfaces to begin forwarding traffic approximately 30 seconds sooner. Inthis mode an interface forwards frames by default until it receives a BPDU that indicates that it shouldbehave otherwise; it does not go through the Learning and Listening states. The bpduguardshutdown-on-violation option causes the interface hardware to be shutdown when it receives a BPDU.When only bpduguard is implemented, although the interface is placed in an Error Disabled state whenreceiving the BPDU, the physical interface remains up and spanning-tree will drop packets in the hardwareafter a BPDU violation. BPDUs are dropped in the software after receiving the BPDU violation. Thisfeature is the same as PortFast mode in Spanning Tree.To enable EdgePort on an interface, use the following command:The EdgePort status of each interface is given in the output of the command show spanning-tree pvst, asshown in Figure 34-4.Change the port priority of an interface.Range: 0 to 240, in increments of 16Default: 128spanning-tree pvst vlan priority INTERFACECaution: Configure EdgePort only on links connecting to an end station. EdgePort can cause loops if it is enabledon an interface connected to a network.Task Command Syntax Command ModeEnable EdgePort on an interface. spanning-tree pvst edge-port[bpduguard |shutdown-on-violation]INTERFACETask Command Syntax Command Mode
