4
It takes time for the clock reference selection mode change to take effect. To verify the
effectiveness of the change, you can also check the logs.
Configuring BITS clocks
Setting an Sa bit for the SSM of BITS clocks
About setting an Sa bit for the SSM of BITS clocks
Sa bits from Sa4 through Sa8 can be used to transmit the SSM quality level of BITS timing signal.
Select one Sa bit as required by the network.
Procedure
1.
Enter system view.
system-view
2.
Specify an Sa bit for the SSM of a BITS clock.
In standalone mode:
network-clock source
{
bits0
|
bits1
}
sa-bit
{
sa4
|
sa5
|
sa6
|
sa7
|
sa8
}
In IRF mode:
network-clock chassis chassis-number source
{
bits0
|
bits1
}
sa-bit
{
sa4
|
sa5
|
sa6
|
sa7
|
sa8
}
By default, BITS clocks use Sa 4 to transmit the SSM.
Setting the frequency of a BITS clock
About setting the frequency of a BITS clock
You can set the frequency of a BITS clock to 2 Mbps or 2 MHz.
Procedure
1.
Enter system view.
system-view
2.
Set the frequency of a BITS clock.
In standalone mode:
network-clock source
{
bits0
|
bits
1
}
frequency
{
bps-2m
|
hz-2m
}
In IRF mode:
network-clock chassis chassis-number source
{
bits0
|
bits1
}
frequency
{
bps-2m
|
hz-2m
}
By default, the frequency of a BITS clock is 2 Mbps.
Specifying a line clock input port
Restrictions and guidelines
Only main ports can be specified as line clock input ports. For the timing signal received on the line
clock input port to be used for synchronization, you must set the port to operate in slave mode.
Procedure
1.
Enter system view.
