91
Step
Command
Remarks
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
{
hmac-sha-1
|
hmac-sha-256
|
hmac-sha-384
|
hmac-sha-512
|
md5
} {
cipher
|
simple
}
string
By default, no NTP authentication
key exists.
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
{
hmac-sha-1
|
hmac-sha-256
|
hmac-sha-384
|
hmac-sha-512
|
md5
} {
cipher
|
simple
}
string
By default, no NTP authentication
key exists.
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 5
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
Configur
e a key
and
configure
it as a
trusted
key
Yes
Yes
Yes
Yes
Yes
Succeeded. NTP
messages can be sent
and received correctly.
Yes
Yes
Yes
Yes
No
Failed. NTP messages
cannot be sent and
received correctly.