3com S7906E Instruccion De Instalación

 

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For the client/server mode, if the NTP authentication feature has not been enabled for the client, 

the client can synchronize with the server regardless of whether the NTP authentication feature 

has been enabled for the server or not. If the NTP authentication is enabled on a client, the client 

can be synchronized only to a server that can provide a trusted authentication key. 

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For all synchronization modes, the server side and the client side must be consistently configured. 

Follow these steps to configure NTP authentication for a client:  

Enter system view 

— 

Enable NTP authentication  

ntp-service authentication 
enable 

Required 

Disabled by default 

Configure an NTP 
authentication key 

ntp-service 
authentication-keyid keyid 
authentication-mode md5 
value 

Required 

No NTP authentication key by 
default 

Configure the key as a trusted 
key 

ntp-service reliable 
authentication-keyid keyid 

Required 

No authentication key is 
configured to be trusted by 
default. 

Client/server mode:  

ntp-service unicast-server 
{ ip-address | server-name } 
authentication-keyid keyid 

Associate the specified key 
with an NTP server 

Symmetric peers mode: 

ntp-service unicast-peer 
{ ip-address | peer-name } 
authentication-keyid keyid 

Required 

You can associate a 
non-existing key with an NTP 
server. To enable NTP 
authentication, you must 
configure the key and specify it 
as a trusted key after 
associating the key with the 
NTP server. 

 

After you enable the NTP authentication feature for the client, make sure that you configure for the client 

an authentication key that is the same as on the server and specify that the authentication key is trusted; 

otherwise, the client cannot be synchronized to the server. 

 

Follow these steps to configure NTP authentication for a server: 

Enter system view 

— 

Enable NTP authentication  

ntp-service authentication 
enable 

Required 

Disabled by default