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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug spanning-tree switch
debug spanning-tree switch
To enable switch shim debugging, use the debug spanning-tree switch command. To disable debugging
output, use the no form of this command.
debug spanning-tree switch {all | errors | general | pm | rx {decode | errors | interrupt |
process} | state | tx [decode]}
no debug spanning-tree switch {all | errors | general | pm | rx {decode | errors | interrupt |
process} | state | tx [decode]}
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC
Command History
Usage Guidelines This command is supported only by the supervisor engine and can be entered only from the switch
console.
all Displays all spanning tree switch shim debugging messages.
errors Enables debugging of switch shim errors or exceptions.
general Enables debugging of general events.
pm Enables debugging of port manager events.
rx Displays received BPDU-handling debugging messages.
decode Enables debugging of the decode received packets of the spanning tree switch shim.
errors Enables debugging of the receive errors of the spanning tree switch shim.
interrupt Enables shim ISR receive BPDU debugging on the spanning tree switch.
process Enables process receive BPDU debugging on the spanning tree switch.
state Enables debugging of the state changes on the spanning tree port.
tx Enables transmit BPDU debugging on the spanning tree switch shim.
decode (Optional) Enables decode transmitted packets debugging on the spanning tree
switch shim.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
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