ntp-service manycast-client ipv6

Format

ntp-service manycast-client ipv6 [ ipv6-address ] [ authentication-keyid key-id | ttl ttl-number | port port-number ] ^*

undo ntp-service manycast-client ipv6 [ ipv6-address ]

Parameters

Parameter	Description	Value
authentication-keyid key-id	Specifies an authentication key ID number carried in messages to be sent to multicast clients.	The value is an integer ranging 1 to 65535.
ttl ttl-number	Specifies the life span of the manycast packet.	The value is an integer ranging from 1 to 255.
port port-number	Sets the port number to be used as the destination port in NTP manycast packets.	The number is an integer that can be 123, or ranges from 1025 to 65535. The default value is 123.
ipv6 ipv6-address	Specifies a manycast IPv6 address. The default value is FF0E:0000:0000:0000:0000:0000:0000:0101.	The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. By default, it is FF0E::0101.

Views

100GE interface view, 10GE interface view, 40GE interface view, Eth-Trunk interface view, GE optical interface view, GE electrical interface view, Loopback interface view, Tunnel interface view, VLANIF interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
ntp	write

Usage Guidelines

Usage Scenario

An interface can be specified on the local device and used to send NTP manycast messages after a timeout period elapses. The local device runs in manycast client mode and periodically sends manycast messages to a manycast server. Based on the message sent by the manycast server, a dynamic client-server association is established.

In VS mode, this command is supported only by the admin VS.

Precautions

If this command is the first NTP configuration command, the system automatically adds the ntp-service [ ipv6 ] server disable command in the configuration file to disable the NTP service. To enable the NTP service, run the undo ntp-service [ ipv6 ] server disable command. If this command is the last NTP configuration command to be deleted, the system automatically deletes the ntp-service [ ipv6 ] server disable command from the configuration file.

On an IPv6 network, multiple primary IPv6 addresses can be configured on the source interface. The system by default uses the most recently updated IPv6 address as the source address of the NTP multicast server. To ensure that the server can properly receive and process packets from a client, set this address as the source address listened by the NTP server.

Example

# Configure 10GE 0/1/0 to transmit NTP manycast message with port 5000.

<HUAWEI> system-view
[~HUAWEI] interface 10GE 0/1/0
[~HUAWEI-10GE0/1/0] ntp-service ipv6 manycast-client port 5000

# Configure 10GE 0/1/0 to receive NTP manycast messages with the multicast IPv6 address of FF0E::111.

<HUAWEI> system-view
[~HUAWEI] interface 10GE 0/1/0
[~HUAWEI-10GE0/1/0] ipv6 enable
[*HUAWEI-10GE0/1/0] ntp-service ipv6 manycast-client ipv6 FF0E::111 authentication-keyid 6