186 Dell PowerConnect 55xx Systems User GuideFILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Maintenance Projects\DellContax\sources\CxUGSystemConfig.fmD E L L C O N F I D E N T I A L – P R E L I M I N A R Y 1 0 / 3 0 / 1 3 - F O R P R O O F O N LY– Trusted Key — Check to specify that the encryption key is used toauthenticate the (Unicast) SNTP server. If this is not checked, thekey is not used for authentication (and another key(s) is used).Defining SNTP Authentication Settings Using CLI CommandsThe following table summarizes the CLI commands for setting fieldsdisplayed in the SNTP Authentication pages.The following is an example of the CLI commands:Table 9-9. SNTP Authentication CLI CommandsCLI Command Descriptionsntp authenticateno sntp authenticateDefines authentication for received SNTPtraffic from servers.Use the no form of this command to disablethe feature.sntp trusted-key key-numberno sntp trusted-key key-numberAuthenticates the identity of a system towhich SNTP will synchronize.Use the no form of this command to disablesystem identity authentication.sntp authentication-keykey-number md5 valueno sntp authentication-key key-numberDefines an authentication key for SNTP.Use the no form of this command to removethe authentication key for SNTP.console(config)# sntp authenticateconsole(config)# sntp trusted-key 8console(config)# sntp authentication-key 8 md5 Clkkey
