H3C S5120-EI Series, Operation Manual

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1-11
Configuring a multicast client
To do… Use the command… Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
Enter the interface used to
receive NTP multicast
messages.
Configure the device to work in
the NTP multicast client mode
ntp-service multicast-client
[
ip-address
]
Required
Configuring the multicast server
To do… Use the command… Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
Enter the interface used to
send NTP multicast message.
Configure the device to work in
the NTP multicast server mode
ntp-service multicast-server
[
ip-address
]
[
authentication-keyid keyid
|
ttl ttl-number
|
version
number
] *
Required
z
A multicast server can synchronize broadcast clients only after its clock has been synchronized.
z
You can configure up to 1024 multicast clients, among which 128 can take effect at the same time.
Configuring Optional Parameters of NTP
Specifying the Source Interface for NTP Messages
If you specify the source interface for NTP messages, the device sets the source IP address of the NTP
messages as the primary IP address of the specified interface when sending the NTP messages.
When the device responds to an NTP request received, the source IP address of the NTP response is
always the IP address of the interface that received the NTP request.