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Listen to NTP
Broadcasts
Broadcast Delay
Auto Key
5. Click
Apply
to save changes to the screen. Navigating away from the screen without clicking the Apply button results
in all the changes to the screen being discarded.
6. Click the
Revert
5.3.2 Configuring Symmetric Key
Symmetric keys are algorithms for cryptography that use trivially related cryptographic keys for both decryption and
encryption. The encryption key is related to the decryption key, as they may be identical or there is a simple mechanism to
go between keys. The keys represent a shared secret between the switch and its time resource.
To review existing Symmetric Key configurations, and (if necessary) add a new one:
1. Select
Services
2. Select the
Symmetric Keys
Select this checkbox to allow the switch to listed over the network for
SNTP broadcast traffic. Once enabled, the switch and the SNTP broadcast
server must be on the same network.
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.
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.
button to undo the changes to the screen and revert to the last saved configuration.
>
Secure NTP
from the main menu tree.
tab.
Switch Services 5 - 25
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Table of Contents
Troubleshooting
