R2511-HP MSR Router Series Interface Command Reference(V5)

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Default
The clock source for a CE3 interface is line clock.
Views
CE3 interface view
Default command level
2: System level
Parameters
master: Adopts the internal clock as the clock source.
slave: Adopts the line clock as the clock source.
Usage guidelines
The clock source is selected depending on the connected remote device. If connected to a transmission
device, the local end uses the line clock. If connected to a CE3 interface on another router, the local end
can use whichever clock so long as it is different from the one adopted at the remote end.
Examples
# Use the internal clock as the clock source on CE3 interface E3 2/0.
<Sysname> system-view
[Sysname] controller e3 2/0
[Sysname-E3 2/0] clock master
controller e3
Use controller e3 to enter CE3 interface view.
Syntax
controller e3 interface-number
Views
System view
Default command level
2: System level
Parameters
interface-number: CE3 interface number.
Examples
# Enter the view of interface E3 2/0.
<Sysname> system-view
[Sysname] controller e3 2/0
[Sysname-E3 2/0]
Related commands
display controller e3
crc
Use crc to configure CRC mode for a synchronous serial interface formed by CE3 interfaces.