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Updated:August 15, 2017
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Enabling SNTP Authentication on 200, 300, & 500 Series Managed Switches
On a network switch, system time can be set manually by the user, dynamically from an SNTP server, or synchronized from the PC running the GUI interface associated with Cisco. If an SNTP server is chosen, the manual time settings are overwritten when communications with the server are established. The SNTP Authentication page enables configuration of the keys that are used when connecting to an SNTP server. The authentication key is created on the SNTP server in a separate process that depends on the type of SNTP server you are using.
The objective of this article is to show you how to enable SNTP Authentication on the SG200, SG300 and SG500 Series switches for SNTP Network Time Synchronization.