Command Manual – NTPH3C S7500E Series Ethernet Switches Chapter 1 NTP Configuration Commands1-14DescriptionUse the ntp-service reliable authentication-keyid command to specify that thecreated authentication key is a trusted key. When NTP authentication enabled, a clientcan be synchronized only to a server that can provide a trusted authentication key.Use the ntp-service reliable authentication-keyid command to remove anauthentication key as a trusted key.No authentication key is configured to be trusted by default.Examples# Enable NTP authentication, specify to use MD5 encryption algorithm, with the key IDof 37 and key value of BetterKey, and specify that this key is a trusted key. system-view[Sysname] ntp-service authentication enable[Sysname] ntp-service authentication-keyid 37 authentication-mode md5BetterKey[Sysname] ntp-service reliable authentication-keyid 371.1.15 ntp-service source-interfaceSyntaxntp-service source-interface interface-type interface-numberundo ntp-service source-interfaceViewSystem viewParametersinterface-type interface-number: Specifies an interface by its interface type andinterface number.DescriptionUse the ntp-service source-interface command to specify an interface for sendingNTP messages.Use the undo ntp-service source-interface command to remove the configuredinterface for sending NTP messages.If you do not wish the IP address of a certain interface on the local device to become thedestination address of response messages, you can use this command to specify aparticular interface for sending all NTP messages, so that the source address in all NTPmessages is the primary IP address of this interface.
