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Configuring optional parameters for ntp, Specifying the source interface for ntp messages, Disabling an interface from receiving ntp messages – H3C Technologies H3C WX3000E Series Wireless Switches User Manual

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Configuring optional parameters for 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.
If you have specified the source interface for NTP messages in the ntp-service unicast-server or

ntp-service unicast-peer command, the interface specified in the ntp-service unicast-server or
ntp-service unicast-peer command serves as the source interface of NTP messages.
If you have configured the ntp-service broadcast-server or ntp-service multicast-server command, the

source interface of the broadcast or multicast NTP messages is the interface configured with the

respective command.
If the specified source interface goes down, NTP uses the primary IP address of the outgoing interface as

the source IP address.
To specify the source interface for NTP messages:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Specify the source interface
for NTP messages.

ntp-service source-interface
interface-type interface-number

By default, no source interface is
specified for NTP messages, and

the system uses the IP address of
the interface determined by the

matching route as the source IP

address of NTP messages.

Disabling an interface from receiving NTP messages

When NTP is enabled, NTP messages are received from all the interfaces by default, and you can

disable an interface from receiving NTP messages through the following configuration.

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter interface view.

interface interface-type
interface-number

N/A

3.

Disable the interface from
receiving NTP messages.

ntp-service in-interface disable

An interface is enabled to receive
NTP messages by default.

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