Displaying Debug Counters For All Mst Instances - HP 3500 Series Advanced Traffic Management Manual

HP Switch(config)# show spanning-tree debug-counters
Status and Counters - MSTP Bridge Common Debug Counters Information
Counter Name
--------------------------------- ---------------- --------------
Invalid BPDUs
Errant BPDUs
MST Config Error BPDUs
Looped-back BPDUs
Starved BPDUs/MSTI MSGs
Exceeded Max Age BPDUs
Exceeded Max Hops BPDUs/MSTI MSGs 0
Topology Changes Detected
Topology Changes Tx
Topology Changes Rx
Topology Change ACKs Tx
Topology Change ACKs Rx
TCN BPDUs Tx
TCN BPDUs Rx
CFG BPDUs Tx
CFG BPDUs Rx
RST BPDUs Tx
RST BPDUs Rx
MST BPDUs/MSTI MSGs Tx
MST BPDUs/MSTI MSGs Rx
Figure 3-30. Example of show spanning-tree debug-counters Command Output

Displaying Debug Counters for All MST Instances

The show spanning-tree debug-counters command allows you to display the
aggregate values of all MSTP debug counters that are maintained on a switch.
These aggregate values are a summary of the information collected from all
ports and from all spanning-tree instances that forward traffic on switch ports.
Use the displayed diagnostic information to globally monitor MSTP operation
on a per-switch basis.
Syntax: show spanning-tree debug-counters
This command displays debug counters for MSTP activity on
all ports configured for VLANs used in spanning-tree
instances.
The following example shows sample output of the show spanning-tree debug-
counters command for all ports. For a description of each counter, refer to
Table 3-1 on page 3-68.
Multiple Instance Spanning-Tree Operation
Troubleshooting an MSTP Configuration
Aggregated Value Collected From
0 CIST
170927 CIST
0 CIST
0 CIST
0 CIST/MSTIs
0 CIST
CIST/MSTIs
2 CIST/MSTIs
6 CIST/MSTIs
4 CIST/MSTIs
0 CIST
0 CIST
0 CIST
0 CIST
0 CIST
0 CIST
0 CIST
0 CIST
10 CIST/MSTIs
341802 CIST/MSTIs
3-63