clock ssm (interface view)

Function

The clock ssm command sets the SSM quality level of a clock source.

The undo clock ssm command cancels the configured SSM priority level of a clock source.

By default, no SSM quality level is configured for a clock source. The SSM quality level of a line clock source is transmitted from the peer device.

Format

clock ssm { unk | prc | ssua | ssub | sec | dnu }

undo clock ssm

Parameters

Parameter	Description	Value
dnu	Indicates that the clock source is unavailable.	-
prc	Indicates G.811 clock signals with the SSM quality level of PRC.	-
sec	Indicates SDH clock source signals with the SSM quality level of SEC.	-
ssua	Indicates G.812 transit node clock signals with the SSM quality level of SSUA.	-
ssub	Indicates G.812 local node clock signals with the SSM quality level of SSUB.	-
unk	Indicates clock signals with unknown synchronization quality.	-

Views

XGE interface view, 25GE interface view, 40GE interface view, 100GE interface view

Default Level

2: Configuration level

Usage Guidelines

When SSM control is enabled on a clock source using the clock ssm-control on command in the system view, an SSM quality level needs to be specified for the clock source on an interface. To set the SSM quality level of a clock source, run the clock ssm command. In switch stacking scenarios, each switch independently runs synchronous Ethernet and PTP. Therefore, this command needs to be configured for the stacked switch in each slot.

Example

# Set the SSM quality level of the clock source on the interface XGE0/0/1 as PRC.

<HUAWEI> system-view
[HUAWEI] interface xgigabitethernet 0/0/1
[HUAWEI-XGigabitEthernet0/0/1] clock ssm prc