H3C Technologies H3C S5120 Series Switches - Manual (Page 561)

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To do… Use the command… Remarks
Specify the source interface for
NTP messages ntp-service source-interface
interface-type interface-number
Required
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.
z 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.
z 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.
z If the specified source interface for NTP messages is down, the source IP address for an NTP
message that is sent out is the primary IP address of the outgoing interface of the NTP message.
Disabling an Interface from Receiving NTP Messages
When NTP is enabled, NTP messages can be received from all the interfaces by default, and you can
disable an interface from receiving NTP messages through the following configuration.
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Disable the interface from
receiving NTP messages ntp-service in-interface
disable
Required
An interface is enabled to
receive NTP messages by
default.
Configuring the Maximum Number of Dynamic Sessions Allowed
To do… Use the command… Remarks
Enter system view system-view —
Configure the maximum
number of dynamic sessions
allowed to be established
locally
ntp-service
max-dynamic-sessions
number
Required
100 by default