Debug Interface - Cisco catalyst 3750 Command Reference Manual

Appendix B Catalyst 3750 Switch Debug Commands

debug interface

Use the debug interface privileged EXEC command to enable debugging of interface-related activities.
Use the no form of this command to disable debugging.
Syntax Description interface-id
null interface-number
port-channel
port-channel-number
vlan vlan-id
Defaults
Debugging is disabled.
Command Modes
Privileged EXEC
Command History Release
12.1(11)AX
Usage Guidelines
If you do not specify a keyword, all debug messages appear.
The undebug interface command is the same as the no debug interface command.
When you enable debugging, it is enabled only on the stack master. To enable debugging on a stack
member, you can start a session from the stack master by using the session switch-number privileged
EXEC command. Then enter the debug command at the command-line prompt of the stack member. You
also can use the remote command stack-member-number LINE privileged EXEC command on the stack
master switch to enable debugging on a member switch without first starting a session.
OL-8552-07
debug interface {interface-id | null interface-number | port-channel port-channel-number |
vlan vlan-id}
no debug interface {interface-id | null interface-number | port-channel port-channel-number |
vlan vlan-id}
Display debug messages for the specified physical port, identified by type
switch number/module number/ port, for example gigabitethernet 1/0/2.
Display debug messages for null interfaces. The interface-number is always
0.
Display debug messages for the specified EtherChannel port-channel
interface. The port-channel-number range is 1 to 48.
Display debug messages for the specified VLAN. The vlan-id range is 1 to
4094.
Modification
This command was introduced.
Catalyst 3750 Switch Command Reference
debug interface
B-15