System Time and Date | 891Set the Hardware Clock with the Time Derived from NTPFigure 45-4. Displaying the Calculated NTP Synchronization VariablesConfigure NTP broadcastsWith FTOS, you can receive broadcasts of time information. You can set interfaces within the system toreceive NTP information through broadcast.To configure an interface to receive NTP broadcasts, use the following commands in the INTERFACEmode:Disable NTP on an interfaceBy default, NTP is enabled on all active interfaces. If you disable NTP on an interface, FTOS drops anyNTP packets sent to that interface.To disable NTP on an interface, use the following command in the INTERFACE mode:To view whether NTP is configured on the interface, use the show config command in the INTERFACEmode. If ntp disable is not listed in the show config command output, then NTP is enabled. (The showconfig command displays only non-default configuration information.)Task Command Command ModePeriodically update the system hardware clock with the timevalue derived from NTP.ntp update-calendar CONFIGURATIONTask Command CommandSet the interface to receive NTP packets. ntp broadcast client INTERFACETable 45-1.2w1d11h : NTP: Maximum Slew:-0.000470, Remainder = -0.496884Command Syntax Command Mode Purposentp disable INTERFACE Disable NTP on the interface.R5/R8(conf)#do show calendar06:31:02 UTC Mon Mar 13 1989R5/R8(conf)#ntp update-calendar 1R5/R8(conf)#do show calendar06:31:26 UTC Mon Mar 13 1989R5/R8(conf)#do show calendar12:24:11 UTC Thu Mar 12 2009
