Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 777

To change the port cost or priority of an interface, use the following commands: Task Change the port cost of an interface. Range: 0 to 65535 Default: see Table 38-2. Change the port priority of an interface. Range: 0 to 15 Default: 128 Command Syntax spanning-tree rstp cost cost Command Mode INTERFACE spanning-tree rstp priority priority-value INTERFACE View the current values for interface parameters using the show spanning-tree rstp command from EXEC privilege mode. See Figure 38-5. 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 rstp edge-port [bpduguard | shutdown-on-violation] Command Mode INTERFACE Verify that EdgePort is enabled on a port using the show spanning-tree rstp command from the EXEC privilege mode or the show config command from INTERFACE mode; Dell Force10 recommends using the show config command, as shown in Figure 38-7. Rapid Spanning Tree Protocol (RSTP) | 777