3com 5500-ei pwr Installation Instruction

 

1-12 

Follow these steps to configure NTP authentication on the client: 

Enter system view 

— 

Enable the NTP authentication 
function 

ntp-service authentication 
enable 

Required 

Disabled by default. 

Configure the NTP 
authentication key 

ntp-service 
authentication-keyid key-id 
authentication-model md5 
value 

Required 

By default, no NTP 
authentication key is 
configured. 

Configure the specified key as a 
trusted key 

ntp-service reliable 
authentication-keyid key-id 

Required 

By default, no trusted key is 
configured. 

Configure on the 
client in the 
server/client mode  

ntp-service unicast-server 
{ remote-ip | server-name } 
authentication-keyid key-id 

Associat
e the 
specified 
key with 
the 
correspo
nding 
NTP 
server 

Configure on the 
symmetric-active 
peer in the 
symmetric peer 
mode 

ntp-service unicast-peer 
{ remote-ip | peer-name } 
authentication-keyid key-id 

Required 

For the client in the NTP 
broadcast/multicast mode, 
you just need to associate the 
specified key with the client 
on the corresponding server. 

 

NTP authentication requires that the authentication keys configured for the server and the client be the 

same. Besides, the authentication keys must be trusted keys. Otherwise, the clock of the client cannot 

be synchronized with that of the server. 

 

Follow these steps to configure NTP authentication on the server: 

Enter system view 

— 

Enable NTP authentication 

ntp-service authentication 
enable 

Required 

Disabled by default. 

Configure an NTP 
authentication key 

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

Required 

By default, no NTP 
authentication key is 
configured.