Using Cable Interface Debug Commands; Debug Cable Arp; Debug Cable Error (For Mac Protocol Errors) - Cisco 7246VXR - uBR Router Software Configuration Manual

Chapter 8 Troubleshooting the System
If you are having trouble, make sure that you are using a valid MAC or IP address for the cable interface
Tip
you want to ping.

Using Cable Interface debug Commands

To troubleshoot cable interfaces, use the following debug commands in enable (privileged EXEC) mode.
Command
Step 1
debug cable ?
Step 2
undebug all
The following commands can generate large amounts of output as the number of cable modems grows.
Caution
On heavily loaded systems with thousands of CMs, these commands can dramatically affect router
performance.

debug cable arp

To activate the debugging of Address Resolution Protocol (ARP) requests on the cable interfaces, use
the debug cable arp command in privileged EXEC mode. To deactivate debugging of ARP requests, use
the no form of this command.
When this command is activated, all cable ARP request messages are displayed on the
Cisco uBR10000 series router console.

debug cable error (for MAC Protocol Errors)

To display errors that occur in the cable MAC protocols, use the debug cable error command in
privileged EXEC mode. To disable debugging output, use the no form of this command.
When this command is activated, all cable ARP request messages are displayed on the
Cisco uBR10000 series router console. When this command is activated, any errors that occur in the
cable MAC protocol are displayed on the Cisco uBR10000 series router console.
OL-2239-03
Purpose
Displays all debug cable commands that are available.
Turns off all debugging information to the console and chooses a more selective debug
command.
Refer to the debug commands that follow.
Note
debug cable arp
debug cable error
no debug cable error
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
Using Cable Interface debug Commands
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