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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug sw-vlan vtp
debug sw-vlan vtp
To enable debugging messages to be generated by the VTP protocol code, use the debug sw-vlan vtp
command. To disable debugging output, use the no form of this command.
debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
no debug sw-vlan vtp {events | packets | pruning [packets | xmit] | xmit}
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC
Command History
Usage Guidelines If you do not enter any more parameters after entering pruning, the VTP pruning debugging messages
are displayed.
Examples This example shows how to debug software VLAN outgoing VTP packets:
Switch# debug sw-vlan vtp xmit
vtp xmit debugging is on
Switch#
Related Commands undebug sw-vlan vtp (same as no debug sw-vlan vtp)
events Displays general-purpose logic flow and detailed VTP debugging messages generated
by the VTP_LOG_RUNTIME macro in the VTP code.
packets Displays the contents of all incoming VTP packets that have been passed into the VTP
code from the IOS VTP platform-dependent layer, except for pruning packets.
pruning Enables debugging message to be generated by the pruning segment of the VTP protocol
code.
packets (Optional) Displays the contents of all incoming VTP pruning packets that have been
passed into the VTP code from the IOS VTP platform-dependent layer.
xmit (Optional) Displays the contents of all outgoing VTP packets that the VTP code will
request the IOS VTP platform-dependent layer to send.
xmit Displays the contents of all outgoing VTP packets that the VTP code will request the
IOS VTP platform-dependent layer to send; does not include pruning packets.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
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