Configuring the Time Synchronization Function on an Atom GPS Module

This section describes how to configure the time synchronization function on an Atom GPS module so that GPS time signals can be transmitted to the router where the Atom GPS module houses through 1588v2 packets and then to downstream devices.

Context

The attributes that can be configured on an Atom GPS module are the clock domain and priority1 and priority2 of the time source.

The class of a clock source cannot be specified. The initial class 248 is used by default when a clock source goes online. After the clock source successfully traces GPS signals, its class changes to 6 (a device using a class-6 clock source cannot be the secondary devices of other clocks in the clock domain). After the clock source loses track of GPS signals, its class changes to 248 again.
The accuracy of a clock source cannot be specified. The initial value 0xFE is used by default when a clock source goes online. After the clock source successfully traces GPS signals, its accuracy changes to 0x21 (specific to 100 ns). After the clock source loses track of GPS signals, its class changes to 0xFE again.
The stability of a clock source cannot be configured. The value is 0xFFFF (if T-GM is not connected to ePRTC).

Perform the following operations on the router where the Atom GPS module houses:

Procedure

Run system-view
The system view is displayed.
Run interface interface-type interface-number
The interface view is displayed.
(Optional) Run smart-clock ptp domain domain-value
A clock domain is configured for the Atom GPS module.
(Optional) Run smart-clock ptp { priority1 priority1-value | priority2 priority2-value }
Priority 1 or priority 2 of the time source is configured for the Atom GPS module.
Run commit
The configuration is committed.