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sntp ipv6 unicast-server
Use sntpipv6 unicast-server to specify an IPv6 NTP server for the device.
Use undo sntpipv6 unicast-serverto remove theIPv6 NTP server specified for the device.
Syntax
sntp ipv6 unicast-server { server-name | ipv6-address } [ vpn-instancevpn-instance-name ]
[authentication-keyidkeyid|sourceinterface-type interface-number ]*
undo sntp ipv6unicast-server { server-name|ipv6-address} [ vpn-instance vpn-instance-name]
Default
No IPv6 NTP server is specified.
Views
System view
Predefined user roles
network-admin
Parameters
server-name: Specifies an NTP server by its host name, a case-insensitive string of 1 to 253
characters.
ipv6-address: Specifies an NTP server by its IPv6 address.
vpn-instance vpn-instance-name: Specifies theVPN to which the NTP server belongs. The
vpn-instance-nameargument is a case-sensitive string of 1 to 31 characters. If the NTP server is on
the public network, do not specify this option.
authentication-keyidkeyid: Specifies the key ID to be used for sending NTP messages to the NTP
server. The value range for the keyidargument is1 to 4294967295. If you do not specify this option,
the local device and NTP server do not authenticate each other.
sourceinterface-type interface-number: Specifies the source interface for IPv6 NTP messages. If
the specified IPv6 NTP server address is not a link local address, the source IPv6 address for IPv6
NTP messages sent by the local device to the NTP server is the IPv6 address of the specified source
interface. If the specified IPv6 NTP server address is a link local address, the IPv6 NTP messages
are sent from the specified source interface, and the source address of the messages is the link local
address of the interface.The interface-type interface-numberargument represents the interface type
and number. If you do not specify an interface, the device automatically selects the source IPv6
address of IPv6 NTP messages. For more information, see RFC 3484.
Usage guidelines
When you specify an IPv6 NTP server for the device, the device is synchronized to the NTP server,
but the NTP server is not synchronized to the device.
To synchronize the PE to a PE or CE in a VPN, provide thevpn-instance vpn-instance-nameoption
in your command.
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