RFC 3825 Location Configuration Information DHCP Option James

RFC 3825 Location Configuration Information DHCP Option James M. Polk John Schnizlein Marc Linsner ftp: //ftp. rfc-editor. org/in-notes/rfc 3825. txt 6 Oct 2006

DHCP Option 123 Format 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Code 123 | 16 | La. Res | Latitude + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Latitude (cont'd) | Lo. Res | + +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Longitude | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | MU | Alt. Res | Altitude | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Alt (cont'd) | Datum | +-+-+-+-+-+-+-+-+

3 Datums Identified Currently IANA Registered: • • • WGS 84 NAD 83 with NAVD 88 NAD 83 with MLLW

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Articulated in RFC 3825 Appendix White House example Postal Address: White House 1600 Pennsylvania Ave. NW Washington, DC 20006 x. Res value 2 Standing on the sidewalk, north side of White House, between driveways Latitude 38. 89868 degrees North Longitude 77. 03723 degrees West Altitude 15 Latitude area Equator to North Pole Longitude Area -1°(W) to – 128°(W) Total Area described 20 million sq n-miles 3 Equator to 63°N -65° to – 128° 10 million sq n-miles 5 32°(N) to 48°(N) – 64° to – 80° 700, 000 square n-miles 9 38° to 39° -77° to -78° 18 38. 8984375° x 38. 9003906° 34 38. 8986800° x 38. 8986802° – 77. 0390625° x – 77. 0371094° – 77. 0372300° x – 77. 0372296° 9600 sq km (111. 3 km x 86. 5 km) 36, 600 sq m (169 m x 217 m) 7. 5 sq mm (3. 11 mm x 2. 62 mm) An example of e 911’s 7000 sq ft requirement: 21/20 38. 8984375° to 38. 8988616 ° – 77. 0371094° to – 77. 0375977° 89 ft x 75 ft or 6669 sq ft