Command Reference Guide

Spanning Tree Protocol Commands
CLI Command Reference
September 2014 Page 290
HP Moonshot Switch Module CLI Command Reference
show spanning-tree mst detailed
This command displays the detailed settings for an MST instance.
Example: The following shows example CLI display output for the command.
(Routing) >show spanning-tree mst detailed 0
MST Instance ID................................ 0
MST Bridge Priority............................ 32768
MST Bridge Identifier.......................... 80:00:00:10:18:48:FC:07
Time Since Topology Change..................... 8 day 3 hr 47 min 7 sec
Topology Change Count.......................... 0
Topology Change in progress.................... FALSE
Designated Root................................ 80:00:00:10:18:48:FC:07
Root Path Cost................................. 0
Root Port Identifier........................... 00:00
Associated FIDs Associated VLANs
--------------- ----------------
Format
show spanning-tree mst detailed mstid
Mode •Privileged EXEC
• User EXEC
Term Definition
MST Instance ID The number that identifies the MST instance.
MST Bridge Priority The bridge priority for the spanning-tree instance. This value affects the
likelihood that the bridge is selected as the root bridge. A lower value increases
the probability that the bridge is selected as the root bridge.
MST Bridge Identifier A unique value that is automatically generated based on the bridge priority
value of the MSTI and the base MAC address of the bridge. When electing the
root bridge for an MST instance, if the bridge priorities for multiple bridges are
equal, the bridge with the lowest MAC address is elected as the root bridge.
Time Since Topology Change The amount of time that has passed since the topology of the spanning tree has
changed since the device was last reset.
Topology Change Count The number of times the topology of the spanning tree has changed.
Topology Change in progress Indicates whether a topology change is in progress on any port assigned to the
MST. If a change is in progress the value is True; otherwise, it is False.
Designated Root The bridge identifier of the root bridge. It is made up from the bridge priority
and the base MAC address of the bridge.
Root Path Cost The path cost to the designated root for this MST instance. Traffic from a
connected device to the root bridge takes the least-cost path to the bridge. If the
value is 0, the cost is automatically calculated based on port speed.
Root Port Identifier The port on the bridge with the least-cost path to the designated root for the
MST instance.
Associated FIDs List of forwarding database identifiers currently associated with this instance.
Associated VLANs List of VLAN IDs currently associated with this instance.