Configuring NTP Authentication in Peer Mode

By configuring the authentication key ID used in the synchronization with the peer on the local end, you can apply NTP authentication in peer mode.

Perform the following steps on the FW that functions as the symmetric active end.

Access the system view.
```
system-view
```
Specify the ID of the authentication key used for synchronization with the NTP peer with a specified IPv4 or IPv6 address.
- ntp-service unicast-peer ip-address [ version number | [ authentication-keyid key-id | autokey ] | source-interface interface-type interface-number | preference | vpn-instance vpn-instance-name | maxpoll max-number | minpoll min-number | preempt | port port-number ] ^*
- ntp-service unicast-peer ipv6 ipv6-address [ [ authentication-keyid key-id | autokey ] | source-interface interface-type interface-number | preference | vpn-instance vpn-instance-name | maxpoll max-number | minpoll min-number | preempt | port port-number ] ^*