The clock source ptp ssm command configures the SSM quality level of a clock source.
The undo clock source ptp ssm command restores the default SSM quality level of a clock source.
By default, the SSM quality level of a clock source is unknown.
clock source ptp ssm { unk | prc | ssua | ssub | sec | dnu } slot slot-id
undo clock source ptp ssm slot slot-id
| Parameter | Description | Value |
|---|---|---|
| ptp | Indicates a PTP clock source. | - |
| 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. | - |
| slot slot-id | Specifies a slot ID. | The value range depends on the device configuration. |
When SSM control is enabled using the clock ssm-control on command, 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 source ptp 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.