3com 4500 PWR 26-PORT User Manual

System view

: Authentication key ID, in the range of 1 to 4294967295.

Use the 

command to specify an 

authentication key as a trusted key. If authentication is enabled, a client can only 
be synchronized to a server that can provide a trusted key. 

Use the 

command to 

remove the configuration.

By default, no trusted authentication key is configured.

Enable NTP authentication. The encryption algorithm is MD5, the key ID is 37, and 
the trusted key is 

.

<SW4500> system-view

System View: return to User View with Ctrl+Z. 

[SW4500] ntp-service authentication enable

[SW4500] ntp-service authentication-keyid 37 authentication-mode md5 

[SW4500] ntp-service reliable authentication-keyid 37

System view

: Specifies an interface. The IP address of the interface 

serves as the source IP address of sent NTP messages. The 

argument 

indicates the ID of the specified VLAN interface, ranging from 1 to 4094.

Use the 

 command to specify a VLAN interface 

through which NTP messages are to be sent.