Command:

clock source


Mode:

Router(config-controller)#


Syntax:

clock source {line | internal}

no clock source

 

Syntax Description:

line

The controller recovers external clock from the line and provides the recovered clock to the internal (system) clock generator. 

internal

The controller synchronizes itself to the internal (system) clock.

 

Command Description:

Use the clock source controller configuration command to set the E1 line clock source for the Cisco AS5200.

This command first appeared in Cisco IOS Release 11.1.

Configure the clock source line primary command on the controller that takes the most reliable clocking from an E1 line. Configure the clock source line secondary command on the controller that has the next best known clocking. With this configuration, the primary line clocking is backed up to the secondary line if the primary clocking shuts down.


Example:

The following example shows how to configure the clock source for internal and then reconfigure the clock source for line:
Router(config)#controller t1 1/0

Router(config-controller)#clock source internal

Router(config)#controller t1 1/0 

Router(config-controller)#clock source line


Misconceptions:

 

None


Related Commands:

 

framing

 

linecode

 


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