Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Task ID
OperationsTask ID
readinterface
Examples
The following example shows the output from the show spanning-tree mstag topology-change flushes
command, which displays details on the MSTIs :
RP/0/RSP0/CPU0:router# show spanning-tree mstag b topology-change flushes
MSTAG Protocol Instance b
Interface Last TC Reason Count
------------ ------------------- -------------------------------- -----
Gi0/0/0/1 18:03:24 2009-07-14 Gi0/0/0/1.10 egress TCN 65535
Gi0/0/0/2 21:05:04 2009-07-15 Gi0/0/0/2.1234567890 ingress TCN 2
Related Commands
DescriptionCommand
Enables MSTAG packet debugging.debug spanning-tree mstag packet, on page 483
Displays the values currently used for populating the
BPDUs sent by all ports.
show spanning-tree mstag, on page 604
Displays the content of the BPDUs being sent from this
interface.
show spanning-tree mstag bpdu interface, on page
606
Enters the MST Access Gateway configuration submode.spanning-tree mstag, on page 625
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
609
Multiple Spanning Tree Protocol Commands
show spanning-tree mstag topology-change flushes
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