Debug Spanning-Tree - Cisco Catalyst 3030 Command Reference Manual

debug spanning-tree

debug spanning-tree
Use the debug spanning-tree privileged EXEC command to enable debugging of spanning-tree
activities. Use the no form of this command to disable debugging.
Syntax Description all
backbonefast
bpdu
bpdu-opt
config
etherchannel
events
exceptions
general
mstp
pvst+
root
snmp
synchronization
switch
uplinkfast
Note Though visible in the command-line help strings, the csuf/csrt keyword is not supported.
Defaults Debugging is disabled.
Command Modes
Privileged EXEC
Command History Release
12.2(25)SEE
Cisco Catalyst Blade Switch 3030 Command Reference
B-60
debug spanning-tree {all | backbonefast | bpdu | bpdu-opt | config | etherchannel | events |
exceptions | general | mstp | pvst+ | root | snmp | switch | synchronization | uplinkfast}
no debug spanning-tree {all | backbonefast | bpdu | bpdu-opt | config | etherchannel | events |
exceptions | general | mstp | pvst+ | root | snmp | switch | synchronization | uplinkfast}
Display all spanning-tree debug messages.
Display BackboneFast-event debug messages.
Display spanning-tree bridge protocol data unit (BPDU) debug messages.
Display optimized BPDU handling debug messages.
Display spanning-tree configuration change debug messages.
Display EtherChannel-support debug messages.
Display spanning-tree topology event debug messages.
Display spanning-tree exception debug messages.
Display general spanning-tree activity debug messages.
Debug Multiple Spanning Tree Protocol events.
Display per-VLAN spanning-tree plus (PVST+) event debug messages.
Display spanning-tree root-event debug messages.
Display spanning-tree Simple Network Management Protocol (SNMP)
handling debug messages.
Display the spanning-tree synchronization event debug messages.
Display switch shim command debug messages. This shim is the software
module that is the interface between the generic Spanning Tree Protocol (STP)
code and the platform-specific code of various switch platforms.
Display UplinkFast-event debug messages.
Modification
This command was introduced.
Appendix B Cisco Catalyst Blade Switch 3030 Debug Commands
78-17262-01