D-Link DIS-300G-14PSW Product Manual - Page 153
Fast start, repeat count, Latitude, North, South, Longitude, Altitude, Meters, Floors, Map Datum
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Command Descriptions when a new LLDP-MED neighbor has been detected in order share LLDP-MED information as fast as possible to new neighbors. Because there is a risk of an LLDP frame being lost during transmission between neighbors, it is recommended to repeat the fast start transmission multiple times to increase the possibility of the neighbors receiving the LLDP frame. With Fast start repeat count it is possible to specify the number of times the fast start transmission would be repeated. The recommended value is 4 times, given that 4 LLDP frames with a 1 second interval will be transmitted, when an LLDP frame with new information is received. Coordinates Location Latitude It should be noted that LLDP-MED and the LLDP-MED Fast Start mechanism is only intended to run on links between LLDP-MED Network Connectivity Devices and Endpoint Devices, and as such does not apply to links between LAN infrastructure elements, including Network Connectivity Devices, or other types of links. Latitude SHOULD be normalized to within 0-90 degrees with a maximum of 4 digits. Longitude It is possible to specify the direction to either North of the equator or South of the equator. Longitude SHOULD be normalized to within 0-180 degrees with a maximum of 4 digits. Altitude It is possible to specify the direction to either East of the prime meridian or West of the prime meridian. Altitude SHOULD be normalized to within -32767 to 32767 with a maximum of 4 digits. It is possible to select between two altitude types (floors or meters). Meters: Representing meters of Altitude defined by the vertical datum specified. Map Datum Floors: Representing altitude in a form more relevant in buildings which have different floor-to-floor dimensions. An altitude = 0.0 is meaningful even outside a building, and represents ground level at the given latitude and longitude. Inside a building, 0.0 represents the floor level associated with ground level at the main entrance. The Map Datum is used for the coordinates given in these options: 153