Command Reference Guide

Spanning Tree Protocol Commands
CLI Command Reference
September 2014 Page 286
HP Moonshot Switch Module CLI Command Reference
show spanning-tree
This command displays spanning tree settings for the common and internal spanning tree. The following
details are displayed.
Example: The following shows example CLI display output for the command.
(Routing) #show spanning-tree
Bridge Priority................................ 32768
Bridge Identifier.............................. 80:00:00:24:81:D0:1D:96
Time Since Topology Change..................... 0 day 8 hr 32 min 14 sec
Format
show spanning-tree
Mode •Privileged EXEC
• User EXEC
Term Definition
Bridge Priority Specifies the bridge priority for the Common and Internal Spanning tree (CST). The
value lies between 0 and 61440. It is displayed in multiples of 4096.
Bridge Identifier The bridge identifier for the CST. It is made up using the bridge priority and the base
MAC address of the 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 CST. 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 Value of the Root Path Cost parameter for the common and internal spanning tree.
Root Port Identifier Identifier of the port to access the Designated Root for the CST
Bridge Port Max Age The amount of time a bridge waits before implementing a topological change.
Bridge Max Hops Bridge max-hops count for the device.
Bridge TX Hold count The maximum number of BPDUs that a bridge is allowed to send within a hello time
window.
Bridge Forwarding
Delay
The amount of time a bridge remains in a listening and learning state before forwarding
packets.
Hello Time The amount of time the root bridge waits between sending hello BPDUs.
CST Regional Root Bridge Identifier of the CST Regional Root. It is made up using the bridge priority and
the base MAC address of the bridge.
Regional Root Path
Cost
Path Cost to the CST Regional Root.
Associated FIDs List of forwarding database identifiers currently associated with this instance.
Associated VLANs List of VLAN IDs currently associated with this instance.