Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug spanning-tree uplinkfast
debug spanning-tre e uplinkfast
To enable the debugging of the spanning- tree UplinkFast event s, use the debug s pan ning- tree
uplinkfast command. To disable the debugging output , use the no form of this command.
debug spanning-tree uplinkfast [exceptions]
no debug spanning-tree uplinkfast
Syntax Description
Defaults T his command has no default settings.
Command Modes Privileged EXEC mode
Usage Guidelines T his command is supp orted only on the supervisor engine and enterable only from t he switch console.
Examples This exampl e shows how to debug the spanning t ree UplinkFast exceptio ns:
Switch# debug spanning-tree uplinkfast exceptions
Spanning Tree uplinkfast exceptions debugging is on
Switch#
Related Commands
exceptions ( Optional) Enable s the debugging of the spanni ng tree UplinkFast exceptio ns.
Command Description
undebug spanning-tree uplinkfast
(same as no d ebug sp anning-tre e
uplinkfast)
Disables debugging output.