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DES-7200 Configuration Guide Chapter 3 NTP
Configuration
3.2.4 Configuring the
NTP Server
No NTP server is configured by default. DES-7200’s client system supports
simultaneous interaction with up to 20 NTP servers, and one authentication key
can be set for each server to initiate encrypted communication with the NTP
server after relevant settings of global authentication and key are completed.
NTP version 3 is the default version of communication with the NTP server.
Meanwhile, the source interface can be configured to send the NTP message,
and the NTP message from the relevant server can only be received on the
sending interface.
To configure the NTP server, run the following commands in the global
configuration mode:
Command Function
ntp server ip-addr [version
version][ source if-name number][key
keyid][prefer]
Configure the NTP server.
version (NTP version number): 1 to 3
if-name (interface type): Aggregateport,
Dialer GigabitEthernet, Loopback,
Multilink, Null, Tunnel, Virtual-ppp,
Virtual-template and VLAN
keyid: 1 to 4294967295
no ntp server ip-addr
Remove the NTP server.
Only when the global security authentication and key setting mechanisms are
completed, and the trusted key for communicating with server is set, can the
NTP client initiate the encrypted communication with the NTP server. To this
end, the NTP server should have the same trusted key configured.
3.2.5 Disabling the
Interface to
Receiving the
NTP Message
The function of this command is to disable the interface to receive the NTP
message.
By default, the NTP messages received on any interface are available to the
NTP client for clock synchronization. This function can shield the NTP
messages received on the relevant interface.
Caution
This command takes effect only for the interface whose IP address
can be configured to receive and send packets.
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