Specifying An Ssm Quality Level For A Clock Source; Controlling The Use Of Ssm In Automatic Reference Selection; Setting A Priority For A Clock Source - H3C CR16000-F Manual

Specifying an SSM quality level for a clock source

Restrictions and guidelines
The SSM quality level you specify for a clock source takes effect only when manual SSM quality
level assignment is enabled.
Procedure
1. Enter system view.
system-view
2. Assign an SSM quality level to a clock source.
In standalone mode:
network-clock source { bits0 | bits1 | lpuport interface-type
interface-number | ptp } ssm { dnu | prc | sec | ssua | ssub | unknown }
In IRF mode:
network-clock chassis chassis-number source { bits0 | bits1 | ptp } ssm
{ dnu | prc | sec | ssua | ssub | unknown }
network-clock source lpuport interface-type interface-number ssm { dnu
| prc | sec | ssua | ssub | unknown }
By default, all clock sources use the unknown SSM quality level.
DNU clock sources are excluded from automatic reference selection.
3. (Optional.) Display the operating state of the network clock monitoring module.
display network-clock source
It takes time for the SSM quality level change to take effect. To verify the effectiveness of the
change, you can also check the logs.

Controlling the use of SSM in automatic reference selection

Procedure
1. Enter system view.
system-view
2. Configure the use of SSM quality level in automatic reference selection.
In standalone mode:
network-clock ssmcontrol { off | on }
In IRF mode:
network-clock chassis chassis-number ssmcontrol { off | on }
To ignore the SSM quality level in clock reference selection, specify the off keyword. To use
the SSM quality level in clock reference selection, specify the on keyword.
By default, SSM quality level is ignored in the automatic reference selection process.

Setting a priority for a clock source

About the priority of a clock source
In an automatic reference selection process, the network clock monitoring module selects the
optimal clock as a reference from all available clock sources.
Restrictions and guidelines
The lower the priority value, the better the clock source.
6