R0106-HP MSR Router Series Interface Command Reference(V7)

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Syntax
clock { master | slave }
undo clock
Default
The clock mode is slave.
Views
CE1/PRI interface view
Predefined user roles
network-admin
Parameters
master: Sets the clock mode to master.
slave: Sets the clock mode to slave.
Usage guidelines
When the clock mode of a CE1/PRI interface is master, it uses the internal clock source.
When the clock mode of a CE1/PRI interface is slave, it uses the line clock source.
Set the clock mode for a CE1/PRI interface depending on its operating mode:
• When the CE1/PRI interface is operating in DCE mode, set its clock mode to master.
• When the CE1/PRI interface is operating in DTE mode, set its clock mode to slave.
Examples
# Set the clock mode to master for CE1/PRI interface E1 2/3/0.
<Sysname> system-view
[Sysname] controller e1 2/3/0
[Sysname-E1 2/3/0] clock master
clock-change auto
Use clock-change auto to enable automatic clock mode switchover on an interface.
Use undo clock-change auto to disable automatic clock mode switchover.
Syntax
clock-change auto
undo clock-change auto
Default
Automatic clock mode switchover is disabled.
Views
CE1/PRI interface view
Predefined user roles
network-admin