Dell PowerConnect 5548 User Guide - Page 433

- Forward Delay (4-30) - Check to use device forward delay time, which is the interval of time in seconds that a bridge remains in a listening and learning state before forwarding packets. Enter a value. Designated Root - Displays the following: - Bridge ID - The bridge priority and MAC address. - Root Bridge ID - The root bridge priority and MAC address. - Root Port - The port number that offers the lowest cost path from this bridge to the Root Bridge. This is significant when the Bridge is not the Root. - Root Path Cost - The cost of the path from this bridge to the root. - Topology Changes Counts - The total amount of STP state changes that have occurred. - Last Topology Change - The amount of time that has elapsed since the bridge was initialized or reset, and the last topographic change occurred. Defining STP Global Parameters Using CLI Commands The following table summarizes the CLI commands for defining STP global parameters as displayed in the Global Settings pages. Table 13-1. STP Global Parameter CLI Commands CLI Command Description spanning-tree Enables spanning tree functionality. no spanning-tree Use the no form of this command to disable the spanning-tree functionality. spanning-tree mode {stp|rstp|mstp} Configures the mode of the spanning tree protocol. no spanning-tree mode Use the no form of this command to restore the default configuration. spanning-tree bpdu Defines BPDU handling when the {filtering|flooding|bridging} spanning tree is disabled globally or on a no spanning-tree bpdu single interface. Use the no form of this command to restore the default configuration. Dell PowerConnect 55xx Systems User Guide 433