Advanced Traffic Management Guide K/KA/KB.15.15

root-guard Enables SNMP notifications when a root-guard inconsistency is
detected.
topology-change Enables notifications sent when a topology change occurs.
topology-change-history Shows the spanning tree topology history
changes.
Default for all of the above options: Disabled
The no form of the command disables traps on the switch.
Syntax:
show spanning-tree traps
Displays the current spanning tree trap configuration on the switch.
Example 122 Viewing spanning tree traps in the default configuration
HP Switch#: show spanning-tree traps
Status and Counters - STP Traps Information
Trap Name | Status
---------------------- + --------
errant-bpdu | Disabled
new-root | Disabled
root-guard | Disabled
loop-guard | Disabled
Viewing debug counters for all VLAN instances
Syntax:
show spanning-tree debug-counters
Displays the aggregate values of all RPVST+ 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 for all switch ports. Use the
displayed diagnostic information to globally monitor RPVST+ operation on a
per-switch basis.
Troubleshooting an RPVST+ configuration 157