Specifications

B-11
Catalyst 2950 and Catalyst 2955 Switch Command Reference
78-15304-01
Chapter B Debug Commands
debug spanning-tree backbonefast
debug spanning-tree backbonefast
Use the debug spanning-tree backbonefast privileged EXEC command to enable debugging of
spanning-tree BackboneFast events. Use the no form of this command to disable debugging output.
debug spanning-tree backbonefast [detail | exceptions]
no debug spanning-tree backbonefast [detail | exceptions]
Syntax Description
Defaults Debugging is disabled.
Command Modes Privileged EXEC
Command History
Usage Guidelines This command can be entered only from the switch console.
The undebug spanning-tree backbonefast command is the same as the no debug spanning-tree
backbonefast command.
Related Commands
detail (Optional) Display detailed BackboneFast debugging messages.
exceptions (Optional) Enable debugging of spanning-tree BackboneFast exceptions.
Release Modification
12.1(6)EA2 This command was first introduced.
Command Description
show debugging Displays information about the types of debugging that are enabled. For
syntax information, select Cisco IOS Configuration Fundamentals
Command Reference For IOS Release 12.1 > Cisco IOS System
Management Commands > Troubleshooting Commands.
show spanning-tree Displays spanning-tree state information.