Cisco Broadband Cable Command Reference Guide

Chapter 4 Cisco Cable Modem Termination System Debugging Commands
debug cable
OL-1581-05
Cisco Broadband Cable Command Reference Guide
debug cable
To enable debugging of the cable interface, use the debug cable command in privileged EXEC mode.
To disable debugging output, use the no form of the command.
debug cable
no debug cable
Syntax Description This command has no arguments or keywords.
Command Modes Privileged EXEC
Command History
Usage Guidelines This command enables debugging of the cable interfaces. To avoid excessive output that could interfere
with router performance, you should limit debugging to a particular cable interface, using the debug
cable interface command, before giving the debug cable command.
Examples The following shows sample output from the debug cable bpiatp command:
Related Commands
Release Modification
11.3 XA This command was introduced.
Router# debug cable
Router# debug cable interface c3/0
CMTS interface debugging is on
Router#
Jun 25 08:36:37.339: cmts_helper_forward 00e0.a3b6.f0af no match
Jun 25 08:36:37.339: cmts_dhcp_glean: type=2 sid 0 IP=221.222.151.182 dhcp mac=0
Jun 25 08:36:40.339: cmts_helper_forward 00e0.a3b6.f0af no match
Jun 25 08:39:13.419: Failed to find CM with mac address 0006.28dc.37fd
Jun 25 08:39:13.419: Failed to find CM with mac address 00d0.bad3.c0cd
Jun 25 08:39:13.419: Failed to find CM with mac address 0003.e350.9cdb
Jun 25 08:39:40.527: Lookup failed - unable to find CM with SID 0
Jun 25 08:38:53.583: Lookup failed - unable to find CM with SID 0
Note The last message displayed above, “unable to find CM with SID 0,” is typically generated by the show
cable commands and can be ignored.
Command Description
debug cable interface Enables debugging on a specific cable interface.
4-5