Dell Force10 S4820T S4820T Configuration Guide - Page 751

Task Change the port priority of an interface. Range: 0 to 240, in increments of 16 Default: 128 Command Syntax spanning-tree pvst vlan priority Command Mode INTERFACE The values for interface PVST+ parameters are given in the output of the command show spanning-tree pvst, as shown in Figure 37-4. Configure an EdgePort The EdgePort feature enables interfaces to begin forwarding traffic approximately 30 seconds sooner. In this mode an interface forwards frames by default until it receives a BPDU that indicates that it should behave otherwise; it does not go through the Learning and Listening states. The bpduguard shutdown-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 when receiving the BPDU, the physical interface remains up and spanning-tree will drop packets in the hardware after a BPDU violation. BPDUs are dropped in the software after receiving the BPDU violation. This feature is the same as PortFast mode in Spanning Tree. Caution: Configure EdgePort only on links connecting to an end station. EdgePort can cause loops if it is enabled on an interface connected to a network. To enable EdgePort on an interface, use the following command: Task Enable EdgePort on an interface. Command Syntax spanning-tree pvst edge-port [bpduguard | shutdown-on-violation] Command Mode INTERFACE The EdgePort status of each interface is given in the output of the command show spanning-tree pvst, as shown in Figure 37-4. Per-VLAN Spanning Tree Plus (PVST+) | 751