Configuration Guide User guide

478 FastIron Configuration Guide
53-1002494-02
LLDP-MED configuration
• wgs84 – (geographical 3D) – World Geodesic System 1984, CRS Code 4327, Prime Meridian
Name: Greenwich
• nad83-navd88 – North American Datum 1983, CRS Code 4269, Prime Meridian Name:
Greenwich; The associated vertical datum is the North American Vertical Datum of 1988
(NAVD88). Use this datum when referencing locations on land. If land is near tidal water, use
nad83-mllw (below).
• nad83-mllw – North American Datum 1983, CRS Code 4269, Prime Meridian Name:
Greenwich; The associated vertical datum is mean lower low water (MLLW). Use this datum
when referencing locations on water, sea, or ocean.
Example coordinate-based location configuration
The following shows an example coordinate-based location configuration for the Sears Tower, at the
following location.
103rd Floor
233 South Wacker Drive
Chicago, IL 60606
The above configuration shows the following:
• Latitude is 41.87884 degrees north (or 41.87884 degrees).
• Longitude is 87.63602 degrees west (or 87.63602 degrees).
• The latitude and longitude resolution of 18 describes a geo-location area that is latitude
41.8769531 to latitude 41.8789062 and extends from -87.6367188 to -87.6347657 degrees
longitude. This is an area of approximately 373412 square feet (713.3 ft. x 523.5 ft.).
• The location is inside a structure, on the 103rd floor.
• The WGS 84 map was used as the basis for calculating the location.
Example coordinate-based location advertisement
The coordinate-based location advertisement will appear similar to the following on the remote
device, and in the CLI display output on the Brocade device (show lldp local-info).
Brocade(config)#lldp med location-id coordinate-based latitude 41.87884
resolution 18 longitude 87.63602 resolution 18 altitude floors 103 resolution 30
wgs84
+ MED Location ID
Data Format: Coordinate-based
Latitude Resolution : 20 bits
Latitude Value : -78.303 degrees
Longitude Resolution : 18 bits
Longitude Value : 34.27 degrees
Altitude Resolution : 16 bits
Altitude Value : 50. meters
Datum : WGS 84