H3C Technologies H3C S6300 Series Switches - Manual (Page 35)

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• Enable NTP authentication.
• 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 Table 4 . (N/A in the table means that whether the configuration is
performed does not make any difference.)