KB.15.15

Example 123 Viewing debug counters for all VLANs

HP Switch#: show spanning-tree debug-counters

Status and Counters - RPVST Debug Counters Information

Aggregated Value

Counter Name Collected from VLANs

------------------------------ -------------------------

Invalid BPDUs 0

Errant BPDUs 0

Looped-back BPDUs 0

Starved BPDUs 18

Exceeded Max Age BPDUs 3

Topology Changes Detected 9

Topology Changes Tx 9

Topology Changes Rx 4

Topology Change ACKs Tx 0

Topology Change ACKs Rx 6

TCN BPDUs Tx 4

TCN BPDUs Rx 0

CFG BPDUs Tx 0

CFG BPDUs Rx 0

RST BPDUs Tx 0

RST BPDUs Rx 0

RPVST BPDUs Tx 1881

RPVST BPDUs Rx 2617

Viewing debug counters per-VLAN

Syntax:

show spanning-tree debug vlan vlan-id

Displays the aggregate values of all RPVST+ debug counters maintained on a switch

for a specified VLAN.

158 Rapid per-VLAN spanning tree (RPVST+) operation