3Com Switch 8800 Configuration Guide Chapter 49 NTP Configuration49-13Reference time: 19:21:32.287 UTC Oct 24 2004(C5267F3C.49A61E0C)By this time, SW88004 has been synchronized by SW88005 and it is at stratum 2, orhigher than SW88005 by 1.Display the sessions of SW88004 and you will see SW88004 has been connected withSW88005.[Quidwa4] display ntp-service sessionssource reference stra reach poll now offset delay disper********************************************************************[12345]3.0.1.33 LOCAL(0) 2 377 64 16 0.0 0.0 0.9note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured49.4.3 Configure NTP Broadcast ModeI. Network requirementsOn SW88003, set local clock as the NTP master clock at stratum 2 and configure tobroadcast packets from Vlan-interface2. Configure SW88004 and SW88001 to listen tothe broadcast from their Vlan-interface2 respectively. (Note: SW88003 supports toconfigure the local clock as the master clock)II. Network diagramSee Figure 7-2.III. Configuration procedureConfigure Ethernet Switch SW88003:Enter system view. system-viewSet the local clock as the NTP master clock at stratum 2.[SW88003] ntp-service refclock-master 2Enter Vlan-interface2 view.[SW88003] interface vlan-interface 2Set it as broadcast server.[SW88003-Vlan-Interface2] ntp-service broadcast-serverConfigure Ethernet Switch SW88004:Enter system view. system-viewEnter Vlan-interface2 view.[SW88004] interface vlan-interface 2[SW88004-Vlan-Interface2] ntp-service broadcast-client
