H3C S3100 Series Operation Manual page 703

with the corresponding NTP broadcast/multicast client. Otherwise, NTP authentication cannot be
enabled normally.
Configurations on the server and the client must be consistent.
Configuration Procedure
Configuring NTP authentication on the client
Table 1-11 Configure NTP authentication on the client
Operation
Enter system view
Enable the NTP authentication
function
Configure the NTP authentication
key
Configure the specified key as a
trusted key
Associate
Configure on the client
the
in the server/client
specified
mode
key with
the
correspo
Configure on the
nding
symmetric-active peer
NTP
in the symmetric peer
server
mode
NTP authentication requires that the authentication keys configured for the server and the client be the
same. Besides, the authentication keys must be trusted keys. Otherwise, the clock of the client cannot
be synchronized with that of the server.
Configuring NTP authentication on the server
Table 1-12 Configure NTP authentication on the server
Operation
Enter system view
Enable NTP authentication
Configure an NTP
authentication key
Command
system-view
ntp-service authentication enable
ntp-service authentication-keyid
key-id authentication-model md5
value
ntp-service reliable
authentication-keyid key-id
ntp-service unicast-server
{ remote-ip | server-name }
authentication-keyid key-id
ntp-service unicast-peer { remote-ip
| peer-name } authentication-keyid
key-id
Command
system-view
ntp-service authentication
enable
ntp-service
authentication-keyid key-id
authentication-mode md5
value
1-12
Description
—
Required
Disabled by default.
Required
By default, no NTP
authentication key is
configured.
Required
By default, no trusted key is
configured.
Required
For the client in the NTP
broadcast/multicast mode, you
just need to associate the
specified key with the client on
the corresponding server.
Description
—
Required
Disabled by default.
Required
By default, no NTP authentication key is
configured.