3Com MSR 30, MSR 50 Ntp-service unicast-server, Vpn-instance-name in your command, Public network

2312 CHAPTER 152: NTP CONFIGURATION COMMANDS

	version number: Specifies the NTP version, where number is in the range of 1 to 3
	and defaults to 3.
Description	Use the ntp-serviceunicast-peercommand to designate a symmetric-passive
	peer for the device.
	Use the undo ntp-service unicast-peer command to remove the
	symmetric-passive peer designated for the device.
	No symmetric-passive peer is designated for the device by default.
n	■ If you specify a VPN instance name, this VPN must exist, and at least one local
	interface and the NTP symmetric-passive peer coexist in this VPN.
	■ If multiple VPNs have been configured on the PE and you want to synchronize
	the PE to a PE or CE in one of these VPNs, you need to provide vpn-instance
	vpn-instance-name in your command.
	■ If you include vpn-instancevpn-instance-name in the undo ntp
	unicast-peercommand, the command will remove the symmetric-passive
	peer with the IP address of ip-address in the specified VPN; if you do not
	include vpn-instancevpn-instance-name in this command, the command will
	remove the symmetric-passive peer with the IP address of ip-address in the
	public network.
Example	# Designate 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 3, and
	send NTP messages through Ethernet 1/0.
	<Sysname> system-view
	[Sysname] ntp-service unicast-peer 10.1.1.1 version 3 source-interfa
	ce ethernet 1/0

ntp-service unicast-server

Syntax	ntp-service unicast-server [ vpn-instance vpn-instance-name] { ip-address
	server-name} [ authentication-keyid keyid priority source-interface
	interface-type interface-number version number ] *
	undo ntp-service unicast-server [ vpn-instance vpn-instance-name] { ip-address
	server-name }
View	System view
Parameter	vpn-instancevpn-instance-name: Specifies a VPN instance by its name, where
	vpn-instance-nameis a string of 1 to 31 characters.
	ip-address: IP address of the NTP server. It must be a host address, rather than a
	broadcast address, a multicast address or the IP address of the local clock.
	server-name: Host name of the NTP server, a string of 1 to 20 characters.