Cisco Catalyst 3750-X Command Reference

B-90
Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Appendix B Catalyst 3750-X and 3560-X Switch 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.
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 The undebug spanning-tree backbonefast command is the same as the no debug spanning-tree
backbonefast command.
When you enable debugging on a switch stack, it is enabled only on the stack master. To enable
debugging on a stack member, you can start a session from the stack master by using the session
switch-number privileged EXEC command. Then enter the debug command at the command-line
prompt of the stack member. You also can use the remote command stack-member-number LINE
privileged EXEC command on the stack master switch to enable debugging on a member switch without
first starting a session.
Related Commands
detail (Optional) Display detailed BackboneFast debug messages.
exceptions (Optional) Display spanning-tree BackboneFast-exception debug messages.
Release Modification
12.2(53)SE2 This command was introduced.
Command Description
show debugging Displays information about the types of debugging that are enabled.
show spanning-tree Displays spanning-tree state information.

Cisco Catalyst 3750-X Specifications

General

Brand	Cisco
Model	Catalyst 3750-X
Category	Switch
Language	English