Configuring The Number Of Dynamic Sessions Allowed On The Local Switch; Disabling An Interface From Receiving Ntp Messages; Displaying Ntp Configuration - H3C S3100 Series Operation Manual

Configuring the Number of Dynamic Sessions Allowed on the Local Switch

A single device can have a maximum of 128 associations at the same time, including static associations
and dynamic associations. A static association refers to an association that a user has manually created
by using an NTP command, while a dynamic association is a temporary association created by the
system during operation. A dynamic association will be removed if the system fails to receive messages
from it over a specific long time. In the server/client mode, for example, when you carry out a command
to synchronize the time to a server, the system will create a static association, and the server will just
respond passively upon the receipt of a message, rather than creating an association (static or
dynamic). In the symmetric mode, static associations will be created at the symmetric-active peer side,
and dynamic associations will be created at the symmetric-passive peer side; In the broadcast or
multicast mode, static associations will be created at the server side, and dynamic associations will be
created at the client side.
Table 1-15 Configure the number of dynamic sessions allowed on the local switch
Operation
Enter system view
Configure the maximum number of
dynamic sessions that can be
established on the local switch

Disabling an Interface from Receiving NTP messages

Table 1-16 Disable an interface from receiving NTP messages
Operation
Enter system view
Enter VLAN interface view
Disable an interface from receiving
NTP messages

Displaying NTP Configuration

After the above configurations, you can execute the display commands in any view to display the
running status of switch, and verify the effect of the configurations.
Table 1-17 Display NTP configuration
Display the status of NTP services
Display the information about the sessions
maintained by NTP
system-view
ntp-service
max-dynamic-sessions
number
system-view
interface Vlan-interface
vlan-id
ntp-service in-interface
disable
Operation
Command
Command
Command
display ntp-service status
display ntp-service sessions
[ verbose ]
1-14
Description
—
Required
By default, up to 100 dynamic
sessions can be established
locally.
Description
—
—
Required
By default, a VLAN interface receives
NTP messages.
Description
Available in any
view