110Step Command Remarks3. Configure an SNTPauthentication key.sntp authentication-keyid keyidauthentication-mode md5 { cipher| simple } valueBy default, no SNTP authenticationkey is configured.4. Specify the key as a trustedkey.sntp reliable authentication-keyidkeyidBy default, no trusted key isspecified.5. Associate the SNTPauthentication key with anNTP server.• For IPv4:sntp unicast-server{ server-name | ip-address }[ vpn-instancevpn-instance-name ]authentication-keyid keyid• For IPv6:sntp ipv6 unicast-server{ server-name | ipv6-address }[ vpn-instancevpn-instance-name ]authentication-keyid keyidBy default, no NTP server isspecified.Displaying and maintaining SNTPExecute display commands in any view.Task CommandDisplay information about all IPv6 SNTP associations. display sntp ipv6 sessionsDisplay information about all IPv4 SNTP associations. display sntp sessionsSNTP configuration exampleNetwork requirementsAs shown in Figure 41, perform the following tasks:• Configure the local clock of Device A as a reference source, with the stratum level 2.• Configure Device B to operate in SNTP client mode, and specify Device A as the NTP server.• Configure NTP authentication on Device A and SNTP authentication on Device B.Figure 41 Network diagramConfiguration procedure1. Assign an IP address to each interface, and make sure Device A and Device B can reach eachother, as shown in Figure 41. (Details not shown.)
