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ntp-service source
Use ntp-service sourceto specify the source interface for NTP messages.
Use undo ntp-service sourceto restore the default.
Syntax
ntp-service sourceinterface-type interface-number
undo ntp-service source
Default
No source interface is specified for NTP messages. The deviceperforms the following operations:
• Searches the routing table for the outbound interface of NTP messages.
• Uses the primary IP address of the outboundinterface as the source IP address for NTP
messages.
Views
System view
Predefined user roles
network-admin
Parameters
interface-type interface-number: Specifies an interface by its type and number.
Usage guidelines
If you specify the source interface for NTP messages, the device usesthe primary IP address of the
specified interface as the source IP address to send NTP messages.
When the device responds to an NTP request, the source IP address of the NTP response is always
the IP address of the interface that has received the NTP request.
If you do not want the IP address of an interface on the local device to become the destination
address for response messages, use the command.
If you have specified the source interface for NTP messages in the ntp-service [ ipv6 ]
unicast-server or ntp-service[ ipv6 ] unicast-peer command, the specified interface acts as the
source interface for NTP messages.
If you have configured the ntp-servicebroadcast-server or ntp-service[ ipv6 ] multicast-server
command on an interface, the interface acts the source interface for the broadcast or multicast NTP
messages.
If the specified source interface is down, the device does not send NTP messages.
Examples
# Specify the source interface for NTP messages asGigabitEthernet1/0/1.
<Sysname> system-view
[Sysname] ntp-service source gigabitethernet 1/0/1
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