H3C SR6600-X, Configuration Manual

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A port can operate in one of the following clock modes:
•
Master —The port provides timing to the peer end. The timing signal is derived from the network
clock monitoring module.
{
If automatic reference selection is used, the timing signal is derived from the reference clock
selected by the network clock monitoring module.
{
If manual reference selection is used, the timing signal is derived from the manually specified
clock reference.
{
If the manually specified clock reference is not available, the port outputs the timing signal
generated by the local clock.
•
Slave —The port uses the timing signal received from the peer end. For the network clock monitoring
module to extract timing signal from a port, you must place the port in slave clock mode. If the port
is in master clock mode, the module does not extract the timing signal from the incoming traffic on
the port.
Feature and hardware compatibility
Hardware Network synchronization compatibility
SR6602-X No
SR6604/SR6608/SR6616 No
SR6604-X/SR6608-X/SR6616-X Yes
Network synchronization configuration task list
Tasks at a glance Remarks
(Required.) Configuring clock reference selection
Enable automatic clock reference
selection or specify a clock reference.
(Optional.) Setting the Sa bit for the SSM of BITS clocks
Set the Sa bit for the SSM of a BITS
clock as required by the network.
(Optional.) Configuring the timing direction of a BITS clock N/A
(Optional.) Setting the frequency of a BITS clock N/A
(Optional.) Specifying a line clock input port N/A
(Optional.) Configuring automatic reference selection parameters :
•
Configure the SSM parameters:
{
Configuring the method to set the SSM quality level of a clock
source
{
Specifying an SSM quality level for a clock source
{
Controlling the use of SSM in automatic reference selection
•
Setting the priority of a clock source
N/A