107
authentication-keyid
keyid
: Specifies the key ID to be used for sending multicast messages to
multicast clients, where
keyid
is in the range of 1 to 4294967295. If this option is not specified, 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 the 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
mdc-admin
Parameters
interface-type interface-number
: Specifies an interface by its type and number.
Usage guidelines
If you specify the source interface for IPv6 NTP messages, the device sets the source IP address of
the IPv6 NTP messages to the primary IP address of the specified interface when sending the IPv6
NTP messages.
When the device responds to an IPv6 NTP request, the source IPv6 address of the NTP response is
always the IPv6 address of the interface that has received the IPv6 NTP request. If you do not want
the IPv6 address of a certain interface on the local device to become the destination address for
response messages, use the command.