Operation Manual – NTP
H3C S3610&S5510 Series Ethernet Switches
Chapter 1 NTP Configuration
1-16
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enable NTP
authentication
ntp-service authentication
enable
Required
Disabled by default
Configure an NTP
authentication key
ntp-service
authentication-keyid
keyid
authentication-mode
md5
value
Required
No NTP authentication
key by default
Configure the key as
a trusted key
ntp-service reliable
authentication-keyid keyid
Required
No authentication key is
configured to be trusted
by default
Server/client mode:
ntp-service
unicast-server
{
ip-address
|
server-name
}
authentication-keyid
keyid
Associate the
specified key with an
NTP server
Symmetric peers mode:
ntp-service
unicast-peer
{
ip-address
|
peer-name
}
authentication-keyid
keyid
Required
You can associate a
non-existing key with an
NTP server. To enable
NTP authentication, you
must configure the key
and specify it as a trusted
key after associating the
key with the NTP server.
Note:
After you enable the NTP authentication feature for the client, make sure that you
configure for the client an authentication key that is the same as on the server and
specify that the authentication is trusted; otherwise, the client cannot be synchronized
to the server.
II. Configuring NTP authentication for a server
Follow these steps to configure NTP authentication for a server:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enable NTP
authentication
ntp-service
authentication
enable
Required
Disabled by default
Configure an NTP
authentication key
ntp-service
authentication-keyid
keyid
authentication-mode
md5
value
Required
No NTP authentication
key by default