H3C S9500 Series Command Manual page 1819

Command Manual – Clock Module
H3C S9500 Series Routing Switches
clock source is DNU and SSM is engaged in control, the clock source will not be
selected during clock source switching.
The SRPU will notify the corresponding interface card about the SSM level after setting
the SSM level. If the SSM level of the line clock source can be extracted, the set SSM
level will be invalidated. Otherwise, the set SSM level will apply.
Examples
# Set the SSM level of clock source 1 to DNU.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] clock ssm dnu source 1
# Restore the SSM level of clock source 1 to the default configuration.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] undo clock ssm source 1
1.1.7 clock ssmcontrol
Syntax
clock ssmcontrol { on | off }
undo clock ssmcontrol
View
System view
Parameters
on: Enable SSM to be engaged in control.
off: Disable SSM from being engaged in control.
Description
Use the clock ssmcontrol command to set whether the SSM function of the clock
module is engaged in control.
Use the undo clock ssm control command to restore the SSM function of the clock
module to the default configuration.
Note the following two conditions:
SSM is engaged in control: The level of the clock source is first determined by its
SSM level during automatic clock source switching.
SSM is not engaged in control: The SSM level can be set and queried, but the
SSM level of the clock source is neglected during automatic clock source
switching.
Chapter 1 Clock Module Commands
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