Configuring Clock Reference Selection; Setting The Sa Bit For The Ssm Of Bits Clocks - H3C SR6600-X Configuration Manual

(Optional.)
non-default MDC

Configuring clock reference selection

Enable automatic clock reference selection or manually select a clock reference.
When you specify the clock reference manually in an MDC environment, follow these restrictions and
guidelines:
If you are specifying a line clock as the reference, you must perform the task on the MDC that
•
contains the line clock input port.
• If the MDC is not the default MDC, you must perform the task in
specified on a non-default
To configure the clock reference selection mode:
Step
1. (Optional.) Verify that
the clock source you
want to select is in
Normal state.
2. Enter system view.
3. Enable automatic
reference selection or
manually select a
reference.
4. (Optional.) Verify that
the configuration is
effective.

Setting the 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. You
must select one Sa bit as required by the network.
Enabling the reference manually specified on a
MDC" for the setting to take effect.
Command
display network-clock source
system-view
•
In standalone mode:
network-clock work-mode { auto | manual
source { bits0 | bits1 | lpuport port-type
port-number } }
•
In IRF mode:
network-clock chassis chassis-number
work-mode { auto | manual source { bits0
| bits1 } }
network-clock work-mode manual source
lpuport port-type port-number
display network-clock status
You must perform this task if a line
clock input port on a non-default MDC
has been specified as the clock
reference source. This task enables the
clock reference setting to take effect on
all MDCs.
144
"Enabling the reference manually
Remarks
Skip this step if you are
enabling automatic reference
selection.
N/A
By default, automatic
reference selection is
enabled.
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 log in addition to use this
command.