8 LLDP-MED configuration

altitude floors <number> is the vertical elevation of a building above the ground, where 0 represents the floor level associated with the ground level at the main entrance and larger values represent floors that are above (higher in altitude) floors with lower values. For example, 2 for the 2nd floor. Sub-floors can be represented by non-integer values. For example, a mezzanine between floor 1 and floor 2 could be represented as 1.1. Similarly, the mezzanines between floor 4 and floor 5 could be represented as 4.1 and 4.2 respectively. Floors located below ground level could be represented by negative values.

resolution <bits> specifies the precision of the value given for altitude. A smaller value increases the area within which the device is located. For floors resolution, enter the value 0 if the floor is unknown, or 30 if a valid floor is being specified.

altitude meters <number> is the vertical elevation in number of meters, as opposed to floors.

resolution <bits> specifies the precision of the value given for altitude. A smaller value increases the area within which the device is located. For meters resolution, enter a value from 0 to 30.

<Datum> is the map used as the basis for calculating the location. Specify one of the following:

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

Brocade(config)#lldp med location-id coordinate-based latitude 41.87884 resolution 18 longitude 87.63602 resolution 18 altitude floors 103 resolution 30 wgs84

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).

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Brocade Communications Systems 6650 manual Example coordinate-based location configuration