Configuring NTP Authentication 959
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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.
Configuring NTP authentication for a server
Follow these steps to configure NTP authentication for a server:
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The procedure of configuring NTP authentication on a server is the same as that
on a client, and the same authentication key must be configured on both the
server and client sides.
Configure the key as
a trusted key
ntp-service reliable
authentication-keyid keyid
Required
No authentication key is
configured to be trusted by
default
Associate the
specified key with an
NTP server
Server/client mode:
ntp-service unicast-server
{ ip-address | server-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.
Symmetric peers mode:
ntp-service unicast-peer { ip-address
| peer-name } authentication-keyid
keyid
To do… Use the command… Remarks
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
Enter interface view interface interface-type
interface-number
-
Associate the specified
key with an NTP server
Broadcast server mode:
ntp-service broadcast-server
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.
Multicast server mode:
ntp-service multicast-server
authentication-keyid keyid
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