Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 513)

Spanning Tree Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 19.23
show spanning-tree mst instance
This command displays detailed information for the specified instance, and all switch
ports associated with that instance.
A topology change counter has been included for RSTP and MSTP. You can see the
topology change counter for RSTP by using the
show spanning-tree command. You can
see the topology change counter for MSTP by using the show spanning-tree mst
instance command.
For information on output options, see “Controlling “show” Command Output” on
page 1.37 .
Syntax show spanning-tree mst instance <instance>
Mode User Exec, Privileged Exec, and Interface Configuration
Usage To display detailed information for instance 2, and all switch ports associated with that
instance, use the command:
Output Figure 19-9: Example output from the show spanning-tree mst instance command
Parameter Description
<instance> Specify an MSTP instance in the range <1-15>.
awplus# show spanning-tree mst instance 2
% 1: MSTI Root Path Cost 0 - MSTI Root Port 0 - MSTI Bridge Priority 32768
% 1: MSTI Root Id 80020000cd24ff2d
% 1: MSTI Bridge Id 80020000cd24ff2d
% port1.0.2: Port 5002 - Id 838a - Role Disabled - State Discarding
% port1.0.2: Designated Internal Path Cost 0 - Designated Port Id 838a
% port1.0.2: Configured Internal Path Cost 20000000
% port1.0.2: Configured CST External Path cost 20000000
% port1.0.2: CST Priority 128 - MSTI Priority 128
% port1.0.2: Designated Root 80020000cd24ff2d
% port1.0.2: Designated Bridge 80020000cd24ff2d
% port1.0.2: Message Age 0 - Max Age 0
% port1.0.2: Hello Time 2 - Forward Delay 15
% port1.0.2: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0
%