C-26
Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Appendix C Catalyst 2950 and 2955 Switch Debug Commands
debug sw-vlan vtp
debug sw-vlan vtp
Use the debug sw-vlan vtp privileged EXEC command to enable debugging of the VLAN Trunking
Protocol (VTP) code. Use the no form of this command to disable debugging.
debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
no debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
Syntax Description
Defaults Debugging is disabled.
Command Modes Privileged EXEC
Command History
Usage Guidelines If no further parameters are entered after the pruning keyword, VTP pruning debugging messages
appear. They are generated by the VTP_PRUNING_LOG_NOTICE, VTP_PRUNING_LOG_INFO,
VTP_PRUNING_LOG_DEBUG, VTP_PRUNING_LOG_ALERT, and
VTP_PRUNING_LOG_WARNING macros in the VTP pruning code.
The undebug sw-vlan vtp command is the same as the no debug sw-vlan vtp command.
events Display debug messages for general-purpose logic flow and detailed VTP
messages generated by the VTP_LOG_RUNTIME macro in the VTP
code.
packets Display debug messages for the contents of all incoming VTP packets
that have been passed into the VTP code from the Cisco IOS VTP
platform-dependent layer, except for pruning packets.
pruning [packets | xmit] Display debug messages generated by the pruning segment of the VTP
code. The keywords have these meanings:
• packets—(Optional) Display debug messages for the contents of all
incoming VTP pruning packets that have been passed into the VTP
code from the VTP platform-dependent layer.
• xmit—(Optional) Display debug messages for the contents of all
outgoing VTP packets that the VTP code requests the Cisco IOS VTP
platform-dependent layer to send.
xmit Display debug messages for the contents of all outgoing VTP packets that
the VTP code requests the VTP platform-dependent layer to send, except
for pruning packets.
Release Modification
12.1(6)EA2 This command was introduced.
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