Configuring 1588 ATR Time Synchronization

In a 1588 ATR domain, a clock client establishes a client/server relationship only with a remote clock server. The client initiates unicast negotiation requests to the server and uses PTP packets to implement clock recovery.

Pre-configuration Tasks

Before configuring 1588 ATR time synchronization, complete the following tasks:

Configure static routes or IGP to ensure reachable routes among nodes.
Configure the clock server to properly process clock signals from the BITS source.
Activate the license file for clock synchronization on the main control board using the license active file-name command. When the clock synchronization license is not loaded, the ptp-adptive enable configuration is not allowed.

Configuring the Unicast Negotiation Function for a Client: The unicast negotiation function and parameters for a connection between a client and a clock server are configured on the HUAWEI NetEngine 8000 F Series functioning as a 1588 ATR client.

Configuring Unicast Negotiation on a 1588 ATR Server: An router that functions as a 1588 ATR server needs to be enabled with unicast negotiation so that it can use Layer 3 unicast packets to establish clock links with a 1588 ATR client and use PTP packets to implement time synchronization over a third-party network.

(Optional) Adjusting Unicast Negotiation Parameters: Time synchronization is the basis for normal network operations. 1588 ATR packets should have a higher priority than other service packets so that they can reach the destination in case of network congestion.

(Optional) Configuring Lightweight Time Synchronization: Lightweight time synchronization implements automatic identification and switching within a device, loosening the requirements on time synchronization precision and simplifying the configuration process.

Configuring Time Synchronization in Server-and-Client Mode

Verifying the Configuration: Check the 1588 ATR configuration on an router that functions as a server or a client in hop-by-hop mode.