5-18WS5100 Series Switch System Reference Guide

Broadcast Delay

Enter the estimated round-trip delay (between 1 and 999999 seconds) for SNTP broadcasts

 

between the SNTP broadcast server and the switch. Define the interval based on the priority

 

of receiving accurate system time frequently. Typically, no more than one packet per minute

 

is necessary to synchronize the switch to within a millisecond of the SNTP broadcast server.

Auto Key

Use use an Auto Key drop-down menu to specify whether the

 

a key is disabled, enabled only on the host or enabled only on the client.

5.Click Apply to save any changes to the screen. Navigating away from the screen without clicking the Apply button results in all the changes on the screen being discarded.

6.Click the Revert button to undo the changes to the screen and revert to the last saved configuration.

7.Refer to the Symmetric Key field to view the following information.

Key ID

Displays a Key ID between 1-65534. The Key ID is a Key abbreviation allowing the switch to

 

reference multiple passwords. This makes password migration easier and more secure

 

between the switch and its NTP resource.

Key Value

Displays the authentication key value used to secure the credentials of the server providing

 

system time to the switch.

Trusted Key

If a checkmark appears, a trusted key has been associated with a domain name. A trusted

 

key is added when a public key is known, but cannot be securely obtained. Adding the trusted

 

allows key information from the server to be considered secure. The authentication

 

procedures requires that both the local and remote servers share the same key and key

 

identifier. Therefore, using key information from a trusted source is important.

8.Select an existing Key and click the Delete button to permanently remove it from the list of Key IDs.

9.Click the Add button to create a new Symmetric Key that can be used by the switch. For more information on adding a new key, see Adding a New SNTP Symmetric Key on page 5-18.

CAUTION: After an NTP synchronization using a Symmetric Key, the NTP status will not

!automatically be updated (it takes approximately 15 minutes to update within the switch Web UI.

5.3.2Adding a New SNTP Symmetric Key

To add a new key to the Configuration tab:

1.Select Services > Secure NTP from the main menu tree.

2.Select the Configuration tab.

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Motorola WS5100 manual Adding a New Sntp Symmetric Key