H3C Technologies H3C SR8800 - Manual (Page 79)

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NOTE:
After you enable the NTP authentication feature for the broadcast client, make sure that you configure for
the client an authentication key that is the same as on the broadcast server and specify that the
authentication key is trusted.
Configuring NTP authentication for a broadcast server
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 Disabled by default
3. Configure an NTP
authentication key.
ntp-service authentication-keyid
keyid authentication-mode md5
value
No NTP authentication key is
configured by default.
4. Configure the key as a trusted
key. ntp-service reliable
authentication-keyid keyid No authentication key is
configured to be trusted by default
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
You can associate a non-existing
key with the broadcast server. To
enable NTP authentication, you
must configure the key and specify
it as a trusted key after associating
the key with the broadcast server.
NOTE:
The same authentication key must be configured on both the broadcast server and broadcast client sides.
Configuring NTP authentication in multicast mode
When configuring NTP authentication in multicast mode, configure the required tasks on both the
multicast client and multicast server, and associate the key with the multicast server on the server.
• If the NTP authentication is not enabled, no key is associated with the multicast server on the
multicast server, or the key is not a trusted key, the clock of the multicast server can be synchronized
to the multicast client as long as NTP authentication is disabled on the client.
• If the NTP authentication is enabled, a key is associated with the multicast server on the multicast
server, and the key is a trusted key, the clock of the multicast server can be synchronized to the
multicast client as long as NTP authentication is enabled on the client.
Configuring NTP authentication for a multicast client
To configure NTP authentication for a multicast client:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable NTP authentication. ntp-service authentication enable Disabled by default