Configuring NTP in symmetric active/passive mode

Follow these guidelines when you configure a symmetric-active peer:

For a symmetric-passive peer to process NTP messages from a symmetric-active peer, execute the ntp-service enable command on the symmetric passive peer to enable NTP.
For time synchronization between the symmetric-active peer and the symmetric-passive peer, make sure either or both of them are in synchronized state.
You can configure multiple symmetric-passive peers by executing the ntp-service unicast-peer or ntp-service ipv6 unicast-peer command multiple times.
When the device operates in symmetric active/passive mode, specify on a symmetric-active peer the IP address for a symmetric-passive peer.

To configure a symmetric-active peer:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Specify a symmetric-passive peer for the device.	Specify a symmetric-passive peer:ntp-service unicast-peer { peer-name \| ip-address } [ vpn-instance vpn-instance-name ] [ authentication-keyid keyid \| priority \| source interface-type interface-number \| version number ] * Specify an IPv6 symmetric-passive peer:ntp-service ipv6 unicast-peer { peer-name \| ipv6-address } [ vpn-instance vpn-instance-name ] [ authentication-keyid keyid \| priority \| source interface-type interface-number ] *	By default, no symmetric-passive peer is specified.

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