Cisco Catalyst 3550 Command Reference Manual page 764

debug spanning-tree switch
Related Commands Command
show debugging
show spanning-tree
Catalyst 3550 Multilayer Switch Command Reference
B-44
Description
Displays information about the types of debugging that are enabled. For
syntax information, select Cisco IOS Release 12.2 Configuration Guides
and Command References > Cisco IOS Configuration Fundamentals
Configuration Guide, Release 12.2 > System Management >
Troubleshooting and Fault Management.
Displays spanning-tree state information.
Appendix B Catalyst 3550 Switch Debug Commands
OL-8566-02