Debug Spanning-Tree - Cisco Catalyst Blade Switch 3130 Reference Manual

Appendix B Cisco Catalyst Blade Switch 3130 for Dell Debug Commands

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
csuf/csrt
etherchannel
events
exceptions
general
mstp
pvst+
root
snmp
synchronization
switch
uplinkfast
Defaults
Debugging is disabled.
Command Modes Privileged EXEC
OL-13271-01
debug spanning-tree {all | backbonefast | bpdu | bpdu-opt | config | csuf/csrt | etherchannel |
events | exceptions | general | mstp | pvst+ | root | snmp | switch | synchronization |
uplinkfast}
no debug spanning-tree {all | backbonefast | bpdu | bpdu-opt | config | csuf/csrt | 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 cross-stack UplinkFast and cross-stack rapid transition activity debug
messages.
This keyword is supported only on stacking-capable switches.
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.
Cisco Catalyst Blade Switch 3130 for Dell Command Reference
debug spanning-tree
B-71