HP MSR1003-8S Command Reference Manual page 125

Default
No symmetric-passive peer is specified for the device.
Views
System view
Predefined user roles
network-admin
Parameters
peer-name: Specifies the host name of the symmetric-passive peer, a case-insensitive string of 1 to 253
characters.
ip-address: Specifies the IP address of the symmetric-passive peer. It must be a unicast address, rather
than a broadcast address, a multicast address, or the IP address of the local clock.
vpn-instance vpn-instance-name: Specifies the MPLS L3VPN to which the symmetric-passive peer belongs,
where vpn-instance-name is a case-sensitive string of 1 to 31 characters. If the symmetric-passive peer is
on the public network, do not specify this option.
authentication-keyid keyid: Specifies the key ID to be used for sending NTP messages to the peer, where
keyid is in the range of 1 to 4294967295. If this option is not specified, the local device and the peer do
not authenticate each other.
priority: Specifies the peer specified by ip-address or peer-name as the first choice under the same
condition.
source interface-type interface-number: Specifies the source interface for NTP messages. In an NTP
message the local device sends to its peer, the source IP address is the primary IP address of this interface.
The interface-type interface-number argument represents the interface type and number.
version number: Specifies the NTP version. The value range for the number argument is 1 to 4, and the
default is 4.
Usage guidelines
When you specify a passive peer for the device, the device and its passive peer can be synchronized to
each other. If their clocks are in synchronized state, the clock with a high stratum level is synchronized to
the clock with a lower stratum level.
To synchronize the PE to a PE or CE in a VPN, provide vpn-instance vpn-instance-name in your
command.
If you include vpn-instance vpn-instance-name in the undo ntp-service unicast-peer command, the
command removes the symmetric-passive peer with the IP address of ip-address in the specified VPN. If
you do not include vpn-instance vpn-instance-name in the command, the command removes the
symmetric-passive peer with the IP address of ip-address in the public network.
Examples
# Specify the device with the IP address of 10.1.1.1 as the symmetric-passive peer of the local device, and
configure the local device to run NTP version 4. Specify the source interface of NTP messages as
GigabitEthernet 2/0/1.
<Sysname> system-view
[Sysname] ntp-service unicast-peer 10.1.1.1 version 4 source gigabitethernet 2/0/1
Related commands
• ntp-service authentication enable
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