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Multiple Instance Spanning-Tree Operation
Troubleshooting an MSTP Configuration
Figure 4-27. Example of show spanning-tree debug-counters instance ports Command Output for One Port
in the CIST Instance
ProCurve(config)# show spanning-tree debug-counters instance 0 ports a15
Status and Counters - CIST Port(s) Debug Counters Information
MST Instance ID : 0
Port : A15
Counter Name Value Last Updated
--------------------------- ---------- -----------------
Invalid BPDUs 0
Errant BPDUs 0
MST Config Error BPDUs 0
Looped-back BPDUs 0
Starved BPDUs 0
Exceeded Max Age BPDUs 0
Exceeded Max Hops BPDUs 0
Topology Changes Detected 1 02/09/07 17:40:59
Topology Changes Tx 3 02/09/07 17:41:03
Topology Changes Rx 2 02/09/07 17:41:01
Topology Change ACKs Tx 0
Topology Change ACKs Rx 0
TCN BPDUs Tx 0
TCN BPDUs Rx 0
CFG BPDUs Tx 0
CFG BPDUs Rx 0
RST BPDUs Tx 0
RST BPDUs Rx 0
MST BPDUs Tx 5 02/09/07 17:41:03
MST BPDUs Rx 173540 02/13/07 18:05:34