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Debug Spanning-Tree Uplinkfast - Cisco Catalyst 3750 Command Reference Manual

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Appendix B
Catalyst 3750 Switch Debug Commands

debug spanning-tree uplinkfast

Use the debug spanning-tree uplinkfast privileged EXEC command to enable debugging of
spanning-tree UplinkFast events. Use the no form of this command to disable debugging output.
Syntax Description
exceptions
Defaults
Debugging is disabled.
Command Modes
Privileged EXEC
Command History
Release
12.1(11)AX
Usage Guidelines
The undebug spanning-tree uplinkfast command is the same as the no debug spanning-tree
uplinkfast command.
When you enable debugging, it is enabled only on the stack master. To enable debugging on a stack
member, you must 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.
Related Commands
Command
show debugging
show spanning-tree
78-16181-01
debug spanning-tree uplinkfast [exceptions]
no debug spanning-tree uplinkfast [exceptions]
(Optional) Display spanning-tree UplinkFast-exception debug messages.
Modification
This command was introduced.
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.
debug spanning-tree uplinkfast
Catalyst 3750 Switch Command Reference
B-75

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