110
<Sysname> system-view
[Sysname] interface gigabitethernet 2/0/1
[Sysname-GigabitEthernet2/0/1] ntp-service multicast-client 224.0.1.1
Related commands
ntp-service multicast-server
ntp-service multicast-server
Use ntp-service multicast-server to configure the device to operate in NTP multicast server mode and use
the current interface to send NTP multicast packets.
Use undo ntp-service multicast-server to remove the configuration.
Syntax
ntp-service multicast-server [ ip-address ] [ authentication-keyid keyid | ttl ttl-number | version number ]
*
undo ntp-service multicast-server [ ip-address ]
Default
The device does not operate in any NTP association mode.
Views
Interface view
Predefined user roles
network-admin
Parameters
ip-address: Specifies a multicast IP address. The default is 224.0.1.1. A multicast server and client must be
configured with the same multicast IP address.
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 multicast clients enabled with NTP authentication.
ttl ttl-number: Specifies the TTL of NTP multicast messages, where ttl-number is in the range of 1 to 255.
The default value is 16.
version number: Specifies the NTP version. The value range for the number argument is 1 to 4, and the
default is 4.
Usage guidelines
After you configure the command, the device periodically sends NTP messages to the specified multicast
address.
If you have configured the device to operate in 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 multicast server mode and send NTP multicast messages on
GigabitEthernet 2/0/1 to the multicast address 224.0.1.1, using key 4 for encryption. Set the NTP version
to 4.
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