Cisco Broadband Cable Command Reference Guide

Chapter 4 Cisco Cable Modem Termination System Debugging Commands
debug cable receive
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Cisco Broadband Cable Command Reference Guide
debug cable receive
To display debug messages for messages received on the upstream from a CM, use the debug cable
receive command in privileged EXEC mode. To stop displaying debug messages, use the no form of this
command.
debug cable receive
no debug cable receive
Syntax Description This command has no arguments or keywords.
Command Modes Privileged EXEC
Command History
Examples The following command enables debugging of upstream messages:
Related Commands
Release Modification
12.0(7)XR This command was introduced.
12.1(1)T, 12.1(2)EC1 This command was disabled.
12.1(11b)EC This command was removed.
router# debug cable receive
CMTS debug Rx debugging is on
The debug cable receive command was disabled in Cisco IOS Release 12.1 T, 12.1 EC, and later
releases, although it still appears in the CLI until Cisco IOS Release 12.1(11b)EC. To monitor the
packets received from the CMs, use the debug ip packet command instead.
Because the debug ip packet command produces a large volume of messages, you must use it together
with an access list to restrict the messages to a particular CM or CPE device to avoid affecting system
performance. For example, the following commands would set up an access list that monitors all traffic
being sent between the hosts with the two specified IP addresses:
router# configure terminal
router(config)# access-list 150 permit ip host ip-address-1 host ip-address-2
router(config)# access-list 150 permit ip host ip-address-2 host ip-address-1
router(config)# exit
router# debug ip packet 150 detail
Command Description
debug cable transmit Enables debugging for transmitted packets.
debug ip packet Enables debugging of IP packets received and transmitted by the router.
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