1-13To do… Use the command… RemarksConfigure an NTP authenticationkeyntp-service authentication-keyidkey-id authentication-mode md5valueRequiredBy default, no NTPauthentication key is configured.Configure the specified key as atrusted keyntp-service reliableauthentication-keyid key-idRequiredBy default, no trustedauthentication key is configured.Enter VLAN interface view interface Vlan-interface vlan-id —Configure on theNTP broadcastserverntp-service broadcast-serverauthentication-keyid key-idAssociate thespecified keywith thecorrespondingbroadcast/multicast clientConfigure on theNTP multicastserverntp-service multicast-serverauthentication-keyid key-idz In NTP broadcast servermode and NTP multicastserver mode, you need toassociate the specified keywith the correspondingbroadcast/multicast clientz You can associate an NTPbroadcast/multicast clientwith an authentication keywhile configuring NTP mode.You can also use thiscommand to associate themafter configuring the NTPmode.The procedure for configuring NTP authentication on the server is the same as that on the client.Besides, the client and the server must be configured with the same authentication key.Configuring Optional NTP ParametersComplete the following tasks to configure optional NTP parameters:Task RemarksConfiguring an Interface on the Local Switch to Send NTP messages OptionalConfiguring the Number of Dynamic Sessions Allowed on the Local Switch OptionalDisabling an Interface from Receiving NTP messages OptionalConfiguring an Interface on the Local Switch to Send NTP messagesFollow these steps to configure an interface on the local switch to send NTP messages:To do… Use the command… RemarksEnter system view system-view —Configure an interface on the local switch tosend NTP messagesntp-service source-interfaceVlan-interface vlan-id Required
