University of Delaware / U.S. National Institute of Standards and Technology / University of Toronto / University of Maryland / Fort Collins / USC Information Sciences Institute / /
IndustryTerm
campus network / satellite paths / radio services / synchronization protocol / Internet host / Internet backbone networks / Internet time service / client software / time distribution protocols / protocol using algorithms / digital telephone networks / Time-server software / hardware/software implementation / Internet address / backbone networks / clock-filter algorithm / clock-selection algorithm / packet-switching networks / Internet host table / public network / ordinary computer systems / Internet addresses / wide-area networks / local-area networks / Internet Timetellers An experiment / Internet hosts / peer time server / time distribution protocol / campus networks / battery-backed clock/calender device / Internet system / statistical processing algorithms / distributed internet applications / selection algorithms / /
MusicGroup
UHF / /
OperatingSystem
Unix / /
Organization
University of Maryland / National Science Foundation / USC Information Sciences Institute / MIT / University of Delaware / Network Information Center / National Bureau of Standards / U.S. National Institute of Standards and Technology / National Research Council of Canada / United States Navy / University of Toronto / /
Person
Louis Mamakos / Michael Petry / Mark Lotter / Dennis Ferguson / / /
Position
representative / /
Product
POS83a / MIL83 / POS83b / /
ProvinceOrState
Maryland / Delaware / /
RadioStation
Standard Time / /
Region
east coast / west coast / /
Technology
filtering algorithm / one protocol / time distribution protocol / Unix / routing algorithms / DCN routing protocol / GPS / routing protocol using algorithms / two protocols / clock-selection algorithm / operating system / TCP/IP protocol / TCP/IP / statistical processing algorithms / three time distribution protocols / 4 Protocol / three protocols / latter two protocols / three time protocols / 1 protocol / synchronization protocol / selection algorithms / DAYTIME protocol / clock-filter algorithm / /
1. Introduction How do hosts and gateways in a large, dispersed networking community know what time it is? How accurate are their clocks? In a 1988 survey involving 5722 hosts and gateways of the DARPA/NSF Internet syste