R21xx-HP FlexFabric 11900 Network Management and Monitoring Command Reference

33
Usage guidelines
When you specify an IPv6 passive peer for the device, the device and its IPv6 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 the vpn-instance vpn-instance-name option in the
command.
If you include the vpn-instance vpn-instance-name option in the undo ntp-service ipv6 unicast-peer
command, the command removes the symmetric-passive peer with the IPv6 address of ipv6-address in
the specified VPN. If you do not include the vpn-instance vpn-instance-name option in this command, the
command removes the symmetric-passive peer with the IPv6 address of ipv6-address in the public
network.
Examples
# Specify the device with the IPv6 address of 2001::1 as the symmetric-passive peer of the device, and
specify the source interface for IPv6 NTP messages as VLAN-interface 1.
<Sysname> system-view
[Sysname] ntp-service ipv6 unicast-peer 2001::1 source vlan-interface 1
Related commands
• ntp-service authentication enable
• ntp-service authentication-keyid
• ntp-service reliable authentication-keyid
ntp-service ipv6 unicast-server
Use ntp-service ipv6 unicast-server to specify an IPv6 NTP server for the device.
Use undo ntp-service ipv6 unicast-server to remove an IPv6 NTP server specified for the device.
Syntax
ntp-service ipv6 unicast-server { ipv6-address | server-name } [ vpn-instance vpn-instance-name ]
[ authentication-keyid keyid | priority | source interface-type interface-number ] *
undo ntp-service ipv6 unicast-server { ipv6-address | server-name } [ vpn-instance vpn-instance-name ]
Default
No IPv6 NTP server is specified for the device.
Views
System view
Predefined user roles
network-admin
Parameters
ipv6-address: Specifies an IPv6 address of the NTP server. It must be a unicast address, rather than a
multicast address.
server-name: Specifies a host name of the NTP server, which is a case-insensitive string of 1 to 253
characters.