Cisco Catalyst 3550

B-32
Catalyst 3550 Multilayer Switch Command Reference
OL-8566-02
Appendix B Catalyst 3550 Switch Debug Commands
debug pm
debug pm
Use the debug pm privileged EXEC command to enable debugging of port manager (PM) activity. The
port manager is a state machine that controls all the logical and physical interfaces. All features, such as
VLANs, UniDirectional Link Detection (UDLD), and so forth, work with the port manager to provide
switch functions. Use the no form of this command to disable debugging.
debug pm {all | assert | card | cookies | etherchnl | messages | port | registry | sm | span | split |
vlan | vp}
no debug pm {all | assert | card | cookies | etherchnl | messages | port | registry | sm | span | split |
vlan | vp}
Syntax Description
Note Though visible in the command-line help strings, the scp and pvlan keywords are not supported.
Defaults Debugging is disabled.
Command Modes Privileged EXEC
Command History
Usage Guidelines The undebug pm command is the same as the no debug pm command.
all Display all PM debug messages.
assert Display assert debug messages.
card Display line-card related-event debug messages.
cookies Display internal PM cookie validation debug messages.
etherchnl Display EtherChannel related-event debug messages.
messages Display PM messages debug messages.
port Display port-related event debug messages.
registry Display PM registry invocation debug messages.
sm Display state-machine related-event debug messages.
span Display spanning-tree related-event debug messages.
split Display split-processor debug messages.
vlan Display VLAN related-event debug messages.
vp Display virtual port related-event debug messages.
Release Modification
12.1(4)EA1 This command was introduced.