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20
•
Configure an authentication key.
•
Set the key as a trusted key on both the broadcast client and server.
•
Configure an NTP authentication key on the broadcast server.
The key IDs and key values configured on the broadcast server and client must be the same.
Otherwise, NTP authentication fails.
To configure NTP authentication for a broadcast client:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable NTP authentication.
ntp-service authentication
enable
By default, NTP authentication is
disabled.
3.
Configure an NTP
authentication key.
ntp-service
authentication-keyid
keyid
authentication-mode md5
{
cipher
|
simple
}
value
By default, no NTP authentication
key is configured.
4.
Configure the key as a
trusted key.
ntp-service reliable
authentication-keyid keyid
By default, no authentication key
is configured as a trusted key.
To configure NTP authentication for a broadcast server:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable NTP authentication.
ntp-service
authentication
enable
By default, NTP authentication is
disabled.
3.
Configure an NTP
authentication key.
ntp-service
authentication-keyid
keyid
authentication-mode md5
{
cipher
|
simple
}
value
By default, no NTP authentication
key is configured.
4.
Configure the key as a
trusted key.
ntp-service reliable
authentication-keyid keyid
By default, no authentication key
is configured as a trusted key.
5.
Enter interface view.
interface
interface-type
interface-number
N/A
6.
Associate the specified key
with the broadcast server.
ntp-service
broadcast-server
authentication-keyid
keyid
By default, the broadcast server is
not associated with any key.
NTP authentication results differ when different configurations are performed on broadcast client and
server. For more information, see
. (N/A in the table means that whether the configuration is
performed does not make any difference.)
Table 4 NTP authentication results
Broadcast server
Broadcast client
Authentication
result
Enable NTP
authenticatio
n
Configur
e a key
and
configure
it as a
trusted
key
Associat
e the key
with a
broadcas
t server
Enable NTP
authenticatio
n
Configure
a key and
configure
it as a
trusted key
Yes
Yes Yes Yes
Yes Succeeded. NTP
messages can be sent