Operation Manual – NTPH3C S5600 Series Ethernet Switches-Release 1510 Chapter 1 NTP Configuration1-16Peer dispersion: 10.93 msReference time: 07:55:07.172 UTC Apr 25 2006(C7F8545B.2C41FEA8)The output information indicates that the S5600 series switch is synchronized to H3C3and the stratum of its local clock is 2, one stratum higher than H3C3.# View the information about the NTP sessions of the S5600 series switch and you cansee that a connection is established between the S5600 series switch and H3C3.[S5600] display ntp-service sessionssource reference stra reach poll now offset delay disper*************************************************************************[2]3.0.1.32 LOCL 1 47 64 39 -13.7 32.2 1.4note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured1.7.3 NTP Broadcast Mode ConfigurationI. Network requirementsH3C3 sets its local clock to be an NTP master clock, with the stratum being 2. NTPpackets are broadcast through VLAN interface 2.Configure S5600-1 and S5600-2 to listen broadcast packets through their VLANinterface 2.Note:This example assumes that H3C3 is a switch that supports the local clock being themaster clock.II. Network diagramH3C 33.0.1.31/243.0.1.32/24erface 2erface 21.0.1.31/24Vlan-intVlan-int-interface 2 H3C 4---interface 23.0.1.31/243.0.1.32/243.0.1.31/243.0.1.32/24-----S5600-2S5600-1----S5600-2S5600-1VlanH3C 33.0.1.31/243.0.1.32/24erface 2erface 21.0.1.31/24Vlan-intVlan-int-interface 2 H3C 4---interface 23.0.1.31/243.0.1.32/243.0.1.31/243.0.1.32/24-----S5600-2S5600-1----S5600-2S5600-1VlanFigure 1-8 Network diagram for the NTP broadcast mode configuration