Specifications

2-154
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
OL_28738-01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug spanning-tree switch
debug spanning-tre e switch
To enable the switch shim debugging, use the debug sp ann ing- tree s witc h command. To disable the
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 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 the switch console.
all Displays all the spanning-tree swit ch shim debugging message s.
errors E nables the debugging of switch shim errors or except ions.
general Enables the debugging of gen eral events.
pm Enables the debugging of port manager events.
rx Displays the rec eived BPDU-handling debugg ing messages.
decode Enables the debugging of the decode-received packets of the spannin g-tree switch
shim.
errors E nables the debugging of the receive errors of the spa nning-tree switch s him.
interrupt Enables the shim ISR receive BPDU debugging on the spanning-tree switch.
process Enables the process receive BPDU debugging on the spanning-tree switch.
state E nables the debugging of the state changes on the spanni ng-tree port.
tx Enables the transmit BPDU debugging on the spanning -tree switch shim.
decode (Optional) Enables the decode-transmitted packets debugging on the spanning-tree
switch shim.