Debug Spanning-Tree Switch - Cisco Catalyst 3560-X Command Reference Manual
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- Software configuration manual (1538 pages) ,
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debug spanning-tree switch
debug spanning-tree switch
Syntax Description
Defaults
Command Modes
Command History
Catalyst 3750-X and 3560-X Switch Command Reference
B-92
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Use the debug spanning-tree switch privileged EXEC command to enable debugging of the software
interface between the Spanning Tree Protocol (STP) software module and the port manager software
module. Use the no form of this command to disable debugging.
debug spanning-tree switch {all | errors | flush | general | helper | pm | rx {decode | errors |
interrupt | process} | state | tx [decode] | uplinkfast}
no debug spanning-tree switch {all | errors | flush | general | helper | pm | rx {decode | errors |
interrupt | process} | state | tx [decode] | uplinkfast}
all
Display all spanning-tree switch debug messages.
errors
Display debug messages for the interface between the spanning-tree software
module and the port manager software module.
flush
Display debug messages for the shim flush operation.
general
Display general event debug messages.
helper
Display spanning-tree helper-task debug messages. Helper tasks handle bulk
spanning-tree updates.
pm
Display port-manager event debug messages.
rx
Display received bridge protocol data unit (BPDU) handling debug messages. The
keywords have these meanings:
decode—Display decoded received packets.
•
•
errors—Display receive error debug messages.
interrupt—Display interrupt service request (ISR) debug messages.
•
process—Display process receive BPDU debug messages.
•
state
Display spanning-tree port state change debug messages;
tx [decode]
Display sent BPDU handling debug messages. The keyword has this meaning:
decode—(Optional) Display decoded sent packets.
•
uplinkfast
Display uplinkfast packet transmission debug messages.
Debugging is disabled.
Privileged EXEC
Release
Modification
12.2(53)SE2
This command was introduced.
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Appendix B
Catalyst 3750-X and 3560-X Switch Debug Commands
OL-21522-02
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