Cisco SR2016T-NA Reference Manual page 880

debug cable dhcp
debug cable dhcp
To enable debugging of the Dynamic Host Configuration Protocol (DHCP) when it is used on the cable
interface, use the debug cable dhcp command in privileged EXEC mode. To disable debugging output,
use the no form of the command.
Syntax Description This command has no arguments or keywords.
Command Modes Privileged EXEC
Command History Release
12.2(11)BC3
Usage Guidelines
The debug commands are primarily intended for use in controlled test and troubleshooting situations
with a limited volume of traffic. In particular, avoid using the debug cable dhcp command on an
interface with a significant number of CMs, because the resulting volume of debug output could impact
system performance. Cisco recommends that when you use the debug cable dhcp command, you limit
its output to a particular interface or CM, using the
commands.
Examples The following shows typical debugging messages for the debug cable dhcp command for a particular
cable modem that is acquiring a DHCP address:
Router# debug cable dhcp
CMTS dhcp debugging is on
Router# debug cable mac-address 0020.4072.7418
Router# clear cable modem 0020.4072.7418 reset
Router#
DHCPINFO hwidb Cable3/1 MAC 0020.4072.7418 SID 2 dhcp_op 1
DHCPINFO wan info circuit 80010006 remote_system_id 0020.4072.7418 remote_device_class 0
DHCP cmts_helper_forward idb Cable3/1.1 client 0020.4072.7418 31.1.1.1
DHCPGLEAN input idb Cable3/1.1 MAC 0020.4072.7418 type 1
DHCPGLEAN hwidb Cable3/1 found for MAC 0020.4072.7418
DHCPGLEAN cmts glean hwidb Cable3/0 mac 0020.4072.7418 sid 2 ipaddr 0.0.0.0
DHCPGLEAN input idb Cable3/1.1 MAC 0020.4072.7418 type 2
DHCPGLEAN hwidb Cable3/1 found for MAC 0020.4072.7418
DHCPGLEAN SID 2 MAC 0020.4072.7418 on Cable3/0 mapped to swidb Cable3/1.1 ipaddr 31.0.0.2
DHCPINFO hwidb Cable3/1 MAC 0020.4072.7418 SID 2 dhcp_op 1
DHCPINFO wan info circuit 80010006 remote_system_id 0020.4072.7418 remote_device_class 0
DHCP cmts_helper_forward idb Cable3/1.1 client 0020.4072.7418 31.1.1.1 Host
DHCPGLEAN input idb Cable3/1.1 MAC 0020.4072.7418 type 3
DHCPGLEAN hwidb Cable3/1 found for MAC 0020.4072.7418
DHCPGLEAN cmts glean hwidb Cable3/0 mac 0020.4072.7418 sid 2 ipaddr 0.0.0.0
DHCPGLEAN input idb Cable3/1.1 MAC 0020.4072.7418 type 5
Cisco Broadband Cable Command Reference Guide
5-20
debug cable dhcp
no debug cable dhcp
Modification
This command was introduced.
debug cable interface
Chapter 5 Cisco CMTS Debugging Commands
or debug cable mac-address
OL-1581-08