When the value of clock stratum is displayed as 4, which is one stratum lower than RouterB, RouterD has synchronized clock with RouterB.As three of the top vendors in ICT, Cisco, Huawei and Juniper provide us many excellent products.However, different vendor, different command line. When the value of clock status is displayed as synchronized, clock synchronization is complete. # Run the display ntp-service status command on RouterD to view NTP status. When the value of clock stratum is displayed as 4, which is one stratum lower than RouterB, RouterC has synchronized clock with RouterB. # Run the display ntp-service status command on RouterC to view NTP status.
When the value of clock stratum is displayed as 3, which is one stratum lower than RouterA, RouterB has synchronized clock with RouterA. # Run the display ntp-service status command on RouterB to view NTP status. Ntp-service unicast-server 10.0.0.1 authentication-keyid 42 //Configure RouterB as the NTP server for RouterD and to use the configured authentication cipher. Ntp-service unicast-server 10.0.0.1 authentication-keyid 42 //Configure RouterB as the NTP server for RouterC and to use the configured authentication cipher. Ntp-service unicast-server 10.2.2.2 authentication-keyid 42 //Configure RouterA as the NTP server for RouterB and to use the configured authentication cipher. Network 10.0.1.0 0.0.0.255 //Configure the network segment where OSPF is run. Network 10.0.0.0 0.0.0.255 //Configure the network segment where OSPF is run. Ntp-service refclock-master 2 //Configure RouterA as the NTP master clock and set stratum to 2. Ntp-service reliable authentication-keyid 42 //Claim reliability of NTP authentication cipher. Ntp-service authentication-keyid 42 authentication-mode hmac-sha256 cipher %^%#$h,(9nViD-B<~\<`rN+#d1_Y7QHW\(s`_Q%0#元'%^%# //Configure an NTP authentication key. Ntp-service authentication enable //Enable NTP authentication. Network 10.2.2.0 0.0.0.255 //Configure the network segment where OSPF is run.
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