Cisco Systems uBR7200 Series Managing the Cisco uBR7246 VXR Clock Card, Clear Clock Counters

Chapter 4 Troubleshooting the System

Managing the Cisco uBR7246 VXR Clock Card

Debug Upstream Channel Description (UCD) Messages

This command activates debugging of upstream channel descriptor (UCD) messages. UCD messages contain information about upstream channel characteristics and are sent to the cable modems on the HFC network. Cable modems that are configured to use enhanced upstream channels use these UCD messages to identify and select an enhanced upstream channel to use. When this command is activated, messages related to upstream channel descriptors are displayed on the Cisco uBR7200 series console. The format for the command is as follows:

CMTS01# debug cable ucd

To deactivate debugging of cable upstream channel descriptor, use the following command:

CMTS01# no debug cable ucd

Managing the Cisco uBR7246 VXR Clock Card

Cisco IOS Release 12.1(1a)T1 introduced clock card commands that included:

•cable clock clear-counters

•cable clock force

•cable clock source-midplane

•show cable clock

•show controllers clock-reference

Cisco IOS Release 12.1(1a)T1 modified commands to support clock card operation include:

•show diag

•show frame-clocks

•show tech support

•show version

Clear Clock Counters

To reset the counters that are displayed with the show controllers clock-referencecommand, use the cable clock clear-countersprivileged EXEC command.

cable clock clear-counters

This command resets any counters that were displayed from the last time the show controllers clock-referencecommand was used.

Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide

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