Dell PowerConnect 3524P User's Guide - Page 339

Defining STP LAG Settings Using CLI Commands The following table contains the CLI commands for defining STP LAG settings. Table 7-21. STP LAG Settings CLI Commands CLI Command Description spanning-tree Enables spanning tree. spanning-tree disable Disables spanning tree on a specific LAG. spanning-tree cost cost Configures the spanning tree cost contribution of a LAG. spanning-tree guard root Enables root guard on all spanning tree instances on the interface. spanning-tree port-priority priority Configures port priority. show spanning-tree [ethernet interface Displays spanning tree configuration. | port-channel port-channel-number][instance instance-id] show spanning-tree [detail] [active | blockedports] [instance instance-id] Displays detailed spanning tree information on active or blocked ports. The following is an example of the CLI commands: console(config)# interface port-channel 1 console(config-if)# spanning-tree disable console(config-if)# spanning-tree cost 35000 console(config-if)# spanning-tree port-priority 96 console(config-if)# spanning-tree portfast Defining Rapid Spanning Tree While the classic spanning tree prevents Layer 2 forwarding loops on a general network topology, convergence can take 30-60 seconds. The delay allows time to detect possible loops, and propagate status changes. Rapid Spanning Tree Protocol (RSTP) detects and uses network topologies that allow a faster convergence of the spanning tree, without creating forwarding loops. To open the Rapid Spanning Tree (RSTP) settings page, click Switch → Spanning Tree → Rapid Spanning Tree in the tree view. Configuring Switch Information 339