Debug Sw-Vlan Vtp - Cisco Catalyst 3550 Command Reference Manual

Appendix B Catalyst 3550 Switch Debug Commands

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.
Syntax Description
events
packets
pruning [packets | xmit]
xmit
Defaults
Debugging is disabled.
Command Modes Privileged EXEC
Command History Release
12.1(4)EA1
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.
OL-8566-02
debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
no debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
Display debug messages for general-purpose logic flow and detailed VTP
debugging messages generated by the VTP_LOG_RUNTIME macro in
the VTP code.
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.
Display debug messages generated by the pruning segment of the VTP
code. The keywords have these meanings:
•
•
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, except for pruning packets.
Modification
This command was introduced.
packets—(Optional) Display debug messages for the contents of all
incoming VTP pruning packets that have been passed into the VTP
code from the Cisco IOS 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.
Catalyst 3550 Multilayer Switch Command Reference
debug sw-vlan vtp
B-51