HP Cisco Catalyst Blade Switch 3020 Cisco Catalyst Blade Switch 3020 for HP Co - Page 427

Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands show spanning-tree Command spanning-tree loopguard default spanning-tree mst configuration spanning-tree mst cost spanning-tree mst forward-time spanning-tree mst hello-time spanning-tree mst max-age spanning-tree mst max-hops spanning-tree mst port-priority spanning-tree mst priority spanning-tree mst root spanning-tree port-priority spanning-tree portfast (global configuration) spanning-tree portfast (interface configuration) spanning-tree uplinkfast spanning-tree vlan Description Prevents alternate or root ports from becoming the designated port because of a failure that leads to a unidirectional link. Enters multiple spanning-tree (MST) configuration mode through which the MST region configuration occurs. Sets the path cost for MST calculations. Sets the forward-delay time for all MST instances. Sets the interval between hello BPDUs sent by root switch configuration messages. Sets the interval between messages that the spanning tree receives from the root switch. Sets the number of hops in an MST region before the BPDU is discarded and the information held for an interface is aged. Configures an interface priority. Configures the switch priority for the specified spanning-tree instance. Configures the MST root switch priority and timers based on the network diameter. Configures an interface priority. Globally enables the BPDU filtering or the BPDU guard feature on Port Fast-enabled interfaces or enables the Port Fast feature on all nontrunking interfaces. Enables the Port Fast feature on an interface and all its associated VLANs. Accelerates the choice of a new root port when a link or switch fails or when the spanning tree reconfigures itself. Configures spanning tree on a per-VLAN basis. OL-8916-01 Cisco Catalyst Blade Switch 3020 for HP Command Reference 2-401