Black Box LGB5028A, LGB5052A user manual Configuration

Chapter 6: Configuration

LLDP-MED defines an LLDP-MED Fast Start interaction between the protocol and the application layers on top of the protocol so it can achieve these related properties. Initially, a network connectivity device will only transmit LLDP TLVs in an LLDPDU. Only after an LLDP-MED endpoint device is detected, will an LLDP-MED capable network connectivity device start to advertise LLDP- MED TLVs in outgoing LLDPDUs on the associated port. The LLDP-MED application will temporarily speed up the transmission of the LLDPDU to start within a second when a new LLDP-MED neighbor has been detected (so it can share LLDP-MED information as fast as possible with new neighbors).

Because there is a risk of an LLDP frame being lost during transmission between neighbors, we recommend repeating the fast start transmission multiple times to increase the possibility of the neighbors receiving the LLDP frame. With fast start repeat count, you can 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.

NOTE: 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 does not apply to links between LAN infrastructure elements, including network connectivity devices, or other types of links.

Coordinates Location

Latitude: Latitude SHOULD be normalized to within 0–90 degrees with a maximum of 4 digits. You can specify the direction to either north of the equator or south of the equator.

Longitude: Longitude SHOULD be normalized to within 0–180 degrees with a maximum of 4 digits. You can specify the direction to either east of the prime meridian or west of the prime meridian.

Altitude: Altitude SHOULD be normalized to within -32767 to 32767 with a maximum of 4 digits. You can select between two altitude types (floors or meters).

Meters: Representing meters of altitude defined by the vertical datum specified.

Floors: Representing altitude in a form more relevant in buildings that 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.

Map Datum:

The Map Datum is used for the coordinates given in these options:

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 pair when referencing locations on land, not near tidal water (which would use Datum = NAD83/MLLW).

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 pair when referencing locations on water/sea/ocean.

Civic Address Location

IETF Geopriv Civic Address based Location Configuration Information (Civic Address LCI).

Country code: The two-letter ISO 3166 country code in capital ASCII letters—Example: DK, DE or US.

State: National subdivisions (state, canton, region, province, prefecture).

County: County, parish, gun (Japan), and district.

City: City, township, shi (Japan)—Example: Copenhagen.

City district: City division, borough, city district, ward, chou (Japan).

Block (Neighborhood): Neighborhood, block.

Street: Street—Example: Poppelvej.

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