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Cisco Cable Clock Card Hardware Installation Guide for the Cisco uBR7246VXR Universal Broadband Router
OL-26705-01
Chapter 4 Configuring the Clock Card
Configuration and Diagnostic Cisco IOS Commands for the Clock Card
Configuration and Diagnostic Cisco IOS Commands for the
Clock Card
Table 4-1
presents a list of basic configuration and diagnostic Cisco IOS commands that you can use to
initially configure and troubleshoot clock card installation. For complete command-line syntax examples
and more definitive explanations of command-line functions, refer to the
Cisco uBR7200 Series
Universal Broadband Router Software Configuration Guide
.
Table 4-1
Cisco IOS Commands for the Clock Card and Their Descriptions
Command Line
Description
Exec Commands
show cable clock
Displays clock card status information like primary and
secondary connections’ source and status, timestamp reference
information, current clock card mode of operation, any
hardware fault, and the midplane clock signal source, if active.
show controllers clock-reference
Displays clock card hardware information and current register
values.
cable clock clear-counters
Instructs the router to reset the counters displayed by
the
show controllers clock-reference
command.
Config Commands
[ no ] cable clock source-midplane
Instructs the clock card to lock on to and propagate the router’s
internal TDM midplane clock signal.
[ no ] cable clock force
{primary | secondary}
Forces activation or deactivation of the primary or secondary
interface. (Cannot be executed if holdover mode is not
possible.)
Support Commands
show version
Displays critical information about the router, including the
presence of a clock card, if one is installed.
show tech-support
Prints information regarding the router’s current status,
including the clock card timing reference, if a clock card is
installed.
show diag
Displays diagnostic information about the router, including
critical clock card information, if a clock card is installed.
