Huawei Quidway S8500 Series User Manual

Command Manual – System Management
Quidway S8500 Series Routing Switches Chapter 4 System Maintenance Commands
Huawei Technologies Proprietary
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clock module will switch back to the original clock source. In this case, the
manually set primary clock source will not work.
3) Clock sources not engaged in switching
The following clock sources are neglected during clock source selection (when SSM is
engaged in control):
z Clock sources whose signal is lost are unavailable clock sources, and are not
engaged in switching.
z Clock sources with the priority of 0xFF are unconfigured clock sources, and are
not engaged in switching.
z Clock sources with the SSM level being DNU should not be used for
synchronization, and are not engaged in switching.
Example
# Set the work mode of clock module on the SRPU to auto.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] clock auto
4.2.2 clock forcessm
Syntax
clock forcessm { on | off } source source
View
System view
Parameter
on: SSM is not extracted from clock source, namely, SSM is manually configured.
off: SSM is extracted from the clock source, and the configured SSM is invalid.
source: The number of the clock source, ranging from 1 to 18.
Description
Use the clock sa-bit command to configure whether to use extracted or manually
configured SSM.
Refer to the clock ssm command for SSM configuration.
Example
# Use SSM extracted from clock source 10.
<Quidway> system-view
System View: return to User View with Ctrl+Z.

Huawei Quidway S8500 Series Specifications

General

Brand	Huawei
Model	Quidway S8500 Series
Category	Switch
Language	English