762 CHAPTER 70: NTP C ONFIGURATIONc CAUTION:■ The source IP address in an NTP packet is the address of the sending interfacespecified by the ntp-service unicast-server command or the ntp-serviceunicast-peer command if you provide the address of the sending interface inthese two commands.■ Dynamic connections can only be established when a switch operates inpassive peer mode, NTP broadcast client mode, or NTP multicast client mode.In other modes, the connections established are static.Displaying andDebugging NTPAfter the above configuration, you can execute the display command in any viewto display the running status of the NTP configuration, and verify the effect of theconfiguration.ConfigurationExampleNTP Server ModeConfigurationNetwork requirementsConfigure the local clock of S7750-1 to be the NTP master clock, with the stratumbeing 2.S7750-2 operates in client mode, with S7750-1 as the time server. S7750-1operates in server mode automatically.Disable the interfacefrom receiving NTPpacketsntp-service in-interface disable OptionalBy default, a VLAN interfacereceives NTP packets.Return to system view quit -Disable NTP servicegloballyntp-service disable OptionalBy default, the NTP service isenabledTable 606 Configure optional NTP parametersOperation Command DescriptionTable 607 Display and debug NTPOperation Command DescriptionDisplay the status of NTP service display ntp-service status The displaycommand can beexecuted in anyviewDisplay the information about thesessions maintained by NTPdisplay ntp-service sessions[ verbose ]Display the brief information about theNTP time servers of the reference clocksources that the local device traces todisplay ntp-service trace
