R3721-F3210-F3171-HP High-End Firewalls System Management and Maintenance Command Reference-6PW101

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Default level
3: Manage level
Parameters
number: Maximum number of dynamic NTP sessions that are allowed to be established, which ranges
from 0 to 100.
Description
Use ntp-service max-dynamic-sessions to set the maximum number of dynamic NTP sessions that are
allowed to be established locally.
Use undo ntp-service max-dynamic-sessions to restore the maximum number of dynamic NTP sessions to
the system default.
By default, the number is 100.
A single device can have a maximum of 128 concurrent associations, 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 is removed if the system fails to receive messages from it over
a specific long time. In client/server mode, for example, when you carry out a command to synchronize
the time to a server, the system creates a static association, and the server just responds passively upon
the receipt of a message, rather than creating an association (static or dynamic). In symmetric mode,
static associations are created at the symmetric-active peer side, and dynamic associations are created
at the symmetric-passive peer side. In broadcast or multicast mode, static associations are created at the
server side, and dynamic associations are created at the client side.
Examples
# Set the maximum number of dynamic NTP sessions allowed to be established to 50.
<Sysname> system-view
[Sysname] ntp-service max-dynamic-sessions 50
ntp-service multicast-client
Syntax
ntp-service multicast-client [ ip-address ]
undo ntp-service multicast-client [ ip-address ]
View
Interface view
Default level
3: Manage level
Parameters
ip-address: Multicast IP address, which defaults to 224.0.1.1.
Description
Use ntp-service multicast-client to configure the device to operate in the NTP multicast client mode and
use the current interface to receive NTP multicast packets.
Use undo ntp-service multicast-client to remove the configuration.
By default, the device does not operate in any NTP operation mode.