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.
Context
ATR, which is an adaptive clock recovery technology, allows a 1588 ATR client to exchange 1588v2 packets with a clock server on a link where a 1588v2-incapable device resides. After receiving 1588v2 packets, the client uses clock information carried in the packets to restore clock information.
Procedure
- Run system-view
The system view is displayed.
- Run ptp enable
The 1588v2 function is enabled.
- Run ptp-adaptive enable
The 1588 ATR function is enabled.
- Run clock source ptp synchronization enable
A PTP clock is specified to participate in clock source selection.
- Run ptp-adaptive device-type client
The 1588 ATR clock working mode is set to client.
- Run ptp-adaptive time profile
The 1588 ATR-enabled device is configured to totally comply with ITUT-G.8275.2.
After the ptp-adaptive time profile command is run, the default domain value changes to 44. The domain value range changes to 44-63.
- Run ptp-adaptive atr hop-by-hop
The 1588 ATR client hop-by-hop mode is enabled.
The ptp-adaptive atr hop-by-hop command is used when the time server supports only the 1588 ATR unicast negotiation mode.
- (Optional) Run ptp-adaptive domain domain-value
A 1588 ATR domain is configured.
The client and clock server, which exchange 1588 ATR packets for clock synchronization, must be in one 1588 ATR clock domain.
- Run ptp-adaptive local-ip ip-address
An IP address is assigned to the client, which is used to initiate a request for negotiation and send Layer 3 unicast packets.
The clock server's and client's IP addresses uniquely identify a 1588 ATR connection, which is set up by exchanging Layer 3 unicast packets between a client and a clock server during negotiation. Configuring a loopback address as the client's IP address is recommended, not the IP address of the management network port on the device, helping the clock server direct packets to the client.
- Run ptp-adaptive { remote-server1-ip | remote-server2-ip } ip-address
The remote clock server list is configured.
If multiple clock servers exist on a network, the HUAWEI NetEngine 8000 F Series, functioning as a client, tracks its clock server based on the clock server's IP address.
Running this command twice specifies master and slave clock servers.
If two clock servers are configured, the client initiates a request for two connections to both clock servers.
- Run ptp-adaptive atr unicast-negotiate enable
1588 ATR unicast negotiation is enabled on the HUAWEI NetEngine 8000 F Series.
- Enable 1588 ATR on the outbound interface used to transmit 1588 ATR packets.
- Run commit
The configuration is committed.