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path ds3 t1 clock source
path ds3 t1 description
path ds3 t1 framing
Use the no version to delete a path.
See path ds3 t1.
Use to configure the transmit clock source for the T3 line.
Use a transmit clock recovered from the line's receive data stream, except in
rare cases such as back-to-back router tests. When performing back-to-back
router tests, configure one end of the line as internal and the other end as line.
Specify the keyword line to use a transmit clock recovered from the line's receive
data stream.
Specify the keywords internal module to use the line module's internal clock.
Specify the keywords internal chassis to use the router's clock.
On a cOC3/STM1 I/O module, you can configure some ports with internal clock
sources and others with line clock sources. However, all ports with internal clock
sources must use either the router's clock or the module's clock. You cannot
configure some ports on the I/O module to use the router's clock and others to
use the module's clock.
To change the clock source of the ports on a cOC3/STM1 I/O module from the
router's clock to the module's clock or vice versa, change the clock source of all
ports first to the line setting, and then to the new internal clock setting.
Example
host1(config-controll)#path 12 ds3 1 t1 28 clock source internal chassis
Use the no version to restore the default value, line clocking.
See path ds3 t1 clock source.
Use to assign a text description or an alias to a T1 or fractional T1 channel on a
T3 (DS3) over channelized SONET/SDH interface.
You can use this command to help you identify the interface and keep track of
interface connections.
The description or alias can be a maximum of 80 characters.
Use "show controllers sonet ds3" on page 161 to display the text description.
Examples
host1(config-controller)#path 12 ds3 1 t1 28 description boston_t1_on_t3
host1(config-controller)#path 12 ds3 1 t1 28/5
description washington_fractional_t1_on_t3
Use the no version to remove the text description or alias.
See path ds3 t1 description.
Chapter 4: Configuring Channelized OCx/STMx Interfaces
Configuration Tasks
135
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