1-25note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configuredTotal associations : 1Configuring NTP Broadcast Mode with AuthenticationNetwork requirementsAs shown in Figure 1-12, Switch C functions as the NTP server for multiple devices on different networksegments and synchronizes the time among multiple devices. To realize this requirement and ensurenetwork security, perform the following configurations:z Switch C’s local clock is to be used as a reference source, with the stratum level of 3.z Switch C works in the broadcast server mode and sends out broadcast messages fromVLAN-interface 2.z Switch D works in the broadcast client mode and receives broadcast messages throughVLAN-interface 2.z NTP authentication is enabled on both Switch C and Switch D.Figure 1-12 Network diagram for configuration of NTP broadcast mode with authenticationConfiguration procedure1) Configure IP addresses for interfaces (omitted)2) Configuration on Switch C:# Configure NTP authentication.[SwitchC] ntp-service authentication enable[SwitchC] ntp-service authentication-keyid 88 authentication-mode md5 123456[SwitchC] ntp-service reliable authentication-keyid 88# Specify Switch C as an NTP broadcast server, and specify an authentication key.[SwitchC] interface vlan-interface 2[SwitchC-Vlan-interface2] ntp-service broadcast-server authentication-keyid 883) Configuration on Switch D:# Configure NTP authentication. system-view[SwitchD] ntp-service authentication enable[SwitchD] ntp-service authentication-keyid 88 authentication-mode md5 123456
