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

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CPOS interface commands
The following matrix shows the support of MSR routers for the CPOS interface commands:
Hardware Command com
p
atibilit
y
MSR2000 No
MSR3000 Yes
MSR4000 Yes
clock
Use clock to set the clock mode of a CPOS interface.
Use undo clock to restore the default.
Syntax
clock { master | slave }
undo clock
Default
The clock mode of a CPOS interface is slave.
Views
CPOS 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 CPOS interface is master, it uses the internal clock source.
When the clock mode of a CPOS interface is slave, it uses the line clock source.
When connected to a SONET/SDH device, the CPOS interface must use the slave clock. The
SONET/SDH network clock is more precise.
When two CPOS interfaces are directly connected, you must configure the two ends with different clock
modes.
Examples
# Set the clock mode to master of CPOS 2/4/0.
<Sysname> system-view
[Sysname] controller cpos 2/4/0
[Sysname-Cpos2/4/0] clock master