112
Views
Interface view
Predefined user roles
network-admin
Parameters
ipv6-address: Specifies an IPv6 multicast address. An IPv6 multicast client and server must be
configured with the same multicast address.
authentication-keyid keyid: Specifies the key ID to be used for sending multicast messages to
multicast clients. The value range for the keyid argument is 1 to 4294967295. If you do not specify
this option, the local device cannot synchronize clients enabled with NTP authentication.
ttl ttl-number: Specifies the TTL of NTP multicast messages. The value range for the ttl-number
argument is 1 to 255, and the default is 16.
Usage guidelines
After you configure the command, the device periodically sends NTP messages to the specified IPv6
multicast address.
If you have configured the device to operate in IPv6 multicast server mode on an interface with the
command, do not add the interface to any aggregate group. To add the interface to an aggregate
group, remove the configuration of the command.
Examples
# Configure the device to operate in IPv6 multicast server mode and send IPv6 NTP multicast
messages on VLAN-interface 1 to the multicast address FF21::1, using key 4 for encryption.
<Sysname> system-view
[Sysname] interface vlan-interface 1
[Sysname-Vlan-interface1] ntp-service ipv6 multicast-server ff21::1 authentication-keyid
4
Related commands
ntp-service ipv6 multicast-client
ntp-service ipv6 source
Use ntp-service ipv6 source to specify a source interface for IPv6 NTP messages.
Use undo ntp-service ipv6 source to restore the default.
Syntax
ntp-service ipv6 source interface-type interface-number
undo ntp-service ipv6 source
Default
No source interface is specified for IPv6 NTP messages. The device automatically selects the
source IP address for IPv6 NTP messages. For more information, see RFC 3484.
Views
System view
Predefined user roles
network-admin
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