H3C Technologies H3C SecBlade LB Cards - Manual (Page 136)

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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.
Configure the same authentication
key on the client and server.
4. Configure the key as a trusted
key. ntp-service reliable
authentication-keyid keyid By default, no authentication key is
configured to be trusted.
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.
Configure the same authentication
key on the client and server.
4. Configure the key as a trusted
key. ntp-service reliable
authentication-keyid keyid By default, no authentication key is
configured to be trusted.
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.
Configuring NTP authentication in multicast mode
Follow these instructions to configure NTP authentication in multicast mode:
• A broadcast client can synchronize to the broadcast server only when you configure all the required
tasks on both the broadcast client and server.
• If NTP authentication is not enabled on the client, the multicast client can synchronize to the
multicast server no matter whether NTP authentication is enabled or not on the server.
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
By default, NTP authentication is
disabled.