Defining SNTP Authentication

The SNTP Authentication page enables configuration of the authentication keys that are used when communicating with an SNTP server that requires authentication. The authentication key is created on the SNTP server in a separate process that depends on the type of SNTP server you are using. Consult with the SNTP server system administrator for more detail on this.

After a key has been created, it must be bound to one or more relevant SNTP servers to be authenticated. This authentication key can also be used for authentication when receiving Broadcast synchronization.

SNTP sessions might require authentication. A Unicast SNTP server that requires authentication must be bounded with an authentication key when it is added by using the Add SNTP Server page.

To define SNTP authentication:

  1. Click Administration > Time Settings > SNTP Authentication. The SNTP Authentication page opens.
  2. Select SNTP Authentication to require authentication of an SNTP session between the switch and an SNTP server.
  3. Click Apply to update the switch.
  4. Click Add. The Add SNTP Authentication page opens.
  5. Enter the following parameters:
    • Authentication Key ID--Enter the number used to identify this SNTP authentication key internally.
    • Authentication Key--Enter the key used for authentication (up to eight characters). The SNTP server must send this key for the switch to synchronize to it.
    • Trusted Key--Select the check box to allow the switch to receive broadcast synchronization information only from a SNTP server by using this authentication key.
  6. Click Apply. The SNTP Authentication is defined, and the Running Configuration file is updated.