HP BladeSystem bc2800 Command Line Interface Reference Guide HP BladeSystem PC - Page 323

Spanning-Tree Commands show spanning-tree The show spanning-tree Privileged EXEC mode command displays spanning-tree configuration. Syntax show spanning-tree [ethernet interface -number| port-channel port-channel-number] [instance instance-id] show spanning-tree [detail] [active | blockedports] [instance instance-id] show spanning-tree mst-configuration Parameters n interface -number - A valid Ethernet port. n port-channel-number - A valid port channel number. n detail - Indicates detailed information. n active - Indicates active ports only. n blockedports - Indicates blocked ports only. n mst-configuration - Indicates the MST configuration identifier. n instance-id - Specifies ID of the spanning tree instance. Default Setting This command has no default configuration. Command Mode Privileged EXEC mode Command Usage The mstp-rstp feature is enabled by default, so the example below illustrates how the show spanning-tree command output can be understood. Use the following guidelines when interpreting these results: n Ignore the instrumented output from MST 0 and 15, they are for internal use only when mstp-rstp (PVST-Interoperability) is enabled. n Instrumentation is only valid for switch port members of a VLAN that is a member of that specific MST instance. n If out-of-band management is desired, follow these steps: 1.Add a third VLAN to the VLAN database. 2.Create MST Instance 3. 3.Remove the new VLAN from MST Instance 15. 4.Add the new VLAN to MST Instance 3. 5.Save your changes. It is important to isolate the new VLAN to its own MST instance to preserve limited PVST/RPVST interoperability. HP PC Blade Switch CLI Reference Guide www.hp.com 22-27