AirLive IGR-842PoE, User Manual, Page: 146 / 299

5. Web Management: Monitor of IGR-842POE
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AirLive IGR-842POE User Manual
permitted voice-capable devices), both in order to conserve the limited LLDPU
space and to reduce security and system integrity issues that can come with
inappropriate knowledge of the network policy.
With this in mind LLDP-MED defines an LLDP-MED Fast Start interaction between
the protocol and the application layers on top of the protocol, in order to 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
LLDPMED 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 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.
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.
Coordinates Location
1. Latitude :
Rapid startup and Emergency Call Service Location Identification Discovery of
2. Longitude :
Longitude SHOULD be normalized to within 0-180 degrees with a maximum of 4
digits.
It is possible to specify the direction to either
East of the prime meridian or West
of the prime meridian.
3. Altitude :
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.
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.