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To specify an Sa bit for the SSM of a BITS clock:
Step Command
Remarks
1.
Enter system view.
system-view
In an MDC environment, you
can perform this task only on
the default MDC. However,
the setting takes effect on all
MDCs.
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.
Configuring the timing direction of a BITS clock
You can configure a BITS clock to derive its timing from an external clock reference or provide timing for
external devices.
To configure the timing direction of a BITS clock:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure the timing
direction of a BITS clock.
•
In standalone mode:
network-clock source
{
bits0
|
bits1
}
direction
{
in
|
out
}
•
In IRF mode:
network-clock chassis
chassis-number
source
{
bits0
|
bits1
}
direction
{
in
|
out
}
The default timing direction is
inbound. BITS clocks derive
their timing from an external
clock reference.
This command is configurable
only on the default MDC.
However, the command setting
takes effect on all MDCs.
Setting the frequency of a BITS clock
You can set the frequency of a BITS clock to 2 Mbps or 2 MHz.
To configure the frequency of a BITS clock:
Step Command
Remarks
1.
Enter system view.
system-view
N/A