Operation Manual – NTPH3C S3100 Series Ethernet Switches Chapter 1 NTP Configuration1-141.5.2 Configuration ProcedureI. Configuring NTP authentication on the clientTable 1-11 Configure NTP authentication on the clientOperation Command DescriptionEnter system view system-view —Enable the NTPauthentication functionntp-serviceauthentication enableRequiredDisabled by default.Configure the NTPauthentication keyntp-serviceauthentication-keyidkey-idauthentication-modelmd5 valueRequiredBy default, no NTPauthentication key isconfigured.Configure the specified keyas a trusted keyntp-service reliableauthentication-keyidkey-idRequiredBy default, no trustedkey is configured.Configure on theclient in theserver/clientmodentp-serviceunicast-server { remote-ip |server-name }authentication-keyidkey-idAssociate thespecified keywiththecorresponding NTPserverConfigure on thesymmetric-activepeer in thesymmetric peermodentp-service unicast-peer{ remote-ip | peer-name }authentication-keyidkey-idRequiredFor the client in theNTPbroadcast/multicastmode, you just need toassociate the specifiedkey with the client onthe correspondingserver.Note:NTP authentication requires that the authentication keys configured for the server andthe client be the same. Besides, the authentication keys must be trusted keys.Otherwise, the clock of the client cannot be synchronized with that of the server.II. Configuring NTP authentication on the serverTable 1-12 Configure NTP authentication on the serverOperation Command DescriptionEnter system view system-view —Enable NTPauthenticationntp-serviceauthentication enableRequiredDisabled by default.
