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Cisco ME 3800X and ME 3600X Switch Command Reference
OL-28238-01
Appendix B Cisco ME 3800X and ME 3600X Switch Debug Commands
debug spanning-tree vlan-shim
debug spanning-tree vlan-shim
To enable debugging of the Spanning Tree Protocol (STP) VLAN shim, use the debug spanning-tree
switch command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree vlan-shim {all | errors | flush | general | helper | pm | rx {decode | errors |
interrupt | process} | state | tx [decode]}
no debug spanning-tree vlan-shim {all | errors | flush | general | helper | pm | rx {decode | errors
| interrupt | process} | state | tx [decode]}
Syntax Description
Defaults Debugging is disabled.
Command Modes Privileged EXEC
Command History
Usage Guidelines The undebug spanning-tree vlan-shim command is the same as the no debug spanning-tree
vlan-shim command.
all Displays all spanning-tree VLAN debug messages.
errors Displays debug messages for STP VLAN errors.
flush Displays debug messages for the VLAN shim flush operation.
general Displays general VLAN event debug messages.
helper Displays spanning-tree helper-task debug messages. Helper tasks handle bulk
spanning-tree updates.
rx Displays received bridge protocol data unit (BPDU) handling debug messages. The
keywords have these meanings:
• decode—Displays decoded received packets.
• errors—Displays receive error debug messages.
• interrupt—Displays interrupt service request (ISR) debug messages.
• process—Displays process receive BPDU debug messages.
state Displays spanning-tree port state change debug messages;
tx [decode] Displays sent BPDU handling debug messages. The keyword has this meaning:
• decode—(Optional) Display decoded sent packets.
Release Modification
12.2(52)EY This command was introduced.
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