3.12.27. show spanning-tree mst

Syntax

show spanning-tree mst instace-id

Parameter

instance-id The MSTP instance ID. Its valid range is from 0 to 15.

Default

Mode

Privileged EXEC

Usage

To show the information for a specific MSTP instance, use the command show spanning-tree mst in the Privileged EXEC mode.

Example

The following example displays the information for the MSTP instance 0 and 1 individually.

Switch# show spanning-tree mst 0
MST Instance Information
------------------------------------------------------------------------
Instance Type : CIST (0)
Bridge Identifier : 32768/ 0/1C:2A:A3:C4:02:92
------------------------------------------------------------------------
Designated Root Bridge : 32768/ 0/1C:2A:A3:C4:02:92
External Root Path Cost : 0
Regional Root Bridge : 32768/ 0/1C:2A:A3:C4:02:92
Internal Root Path Cost : 0
Designated Bridge : 32768/ 0/1C:2A:A3:C4:02:92
Root Port : 0/0
Max Age : 20
Forward Delay : 15
Topology changes : 3
Last Topology Change : 374
------------------------------------------------------------------------
VLANs mapped: 1-4094
------------------------------------------------------------------------
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- ---------
----------------------------------------
gi1 Desg FWD 20000 128.1 P2P (RSTP)
gi15 Desg FWD 200000 128.15 P2P (RSTP)
gi25 Desg FWD 200000 128.25 P2P (RSTP)