Cisco 4500M

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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 etherchnl
debug etherchnl
To debug EtherChannel, use the debug etherchnl command. To disable debugging output, use the no
form of this command.
debug etherchnl [all | detail | error | event | idb | linecard]
no debug etherchnl
Syntax Description
Defaults The default settings are as follows:
• Debug is disabled.
• All messages are displayed.
Command Modes Privileged EXEC
Command History
Usage Guidelines If you do not specify a keyword, all debug messages are displayed.
Examples This example shows how to display all EtherChannel debug messages:
Switch# debug etherchnl
PAgP Shim/FEC debugging is on
22:46:30:FEC:returning agport Po15 for port (Fa2/1)
22:46:31:FEC:returning agport Po15 for port (Fa4/14)
22:46:33:FEC:comparing GC values of Fa2/25 Fa2/15 flag = 1 1
22:46:33:FEC:port_attrib:Fa2/25 Fa2/15 same
22:46:33:FEC:EC - attrib incompatable for Fa2/25; duplex of Fa2/25 is half, Fa2/15 is full
22:46:33:FEC:pagp_switch_choose_unique:Fa2/25, port Fa2/15 in agport Po3 is incompatable
Switch#
This example shows how to display EtherChannel IDB debug messages:
Switch# debug etherchnl idb
Agport idb related debugging is on
Switch#
all (Optional) Displays all EtherChannel debug messages.
detail (Optional) Displays detailed EtherChannel debug messages.
error (Optional) Displays EtherChannel error messages.
event (Optional) Debugs major EtherChannel event messages.
idb (Optional) Debugs PAgP IDB messages.
linecard (Optional) Debugs SCP messages to the module.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.