Alcatel Carrier Internetworking Solutions Switch/Router ユーザーズマニュアル

Page 12-37

There are two types of messages an 

NTP

 entity can send to another 

NTP

 entity: request and 

control. Control messages attempt to change the configuration of the 

NTP

 entity in some fash-

ion. It is possible to change the authentication key identifier for control messages sent from 
the switch to another 

NTP

 entity.

To change the authentication key 

ID

, enter the 

 command as shown:

where 

 is the new key 

ID

. Press 

, and a brief message is displayed confirming 

the operation.

♦ Note ♦

The authentication key 

ID

 must match in both the 

switch sending the message, and the switch receiving 
the message.

The trusted list in the key file is a list of all keys that are considered authentic and uncompro-
mised. Messages from an 

NTP

 entity using one of these keys are accepted and acted upon. It 

is possible to add a key to the trusted list.

To add a key 

ID

 to the trust list in the key file, enter the 

 command as shown:

where 

 is the new key 

ID

 to be added to the trusted list. For example, to add key 

ID

 5 

to the trusted list, enter the following:

A brief message is displayed confirming the operation. 

♦ Note ♦

Adding a key 

ID

 using the 

 command adds the 

key to the working version of the key file in the 
switch’s 

RAM

. If you reset the switch or re-initialize 

NTP

, the added key is lost.

The trusted list in the key file is a list of all keys that are considered authentic and uncompro-
mised. Messages from an 

NTP

 entity using one of these keys are accepted and acted upon.

To display a list of the trusted keys for this 

NTP

 client or server, enter the 

 command at 

the system prompt. A list of the key numbers accepted by this client or server is displayed. 
For more information on authentication, see NTP and Authentication on page 12-4.