FibroLAN Falcon-RX/812/G/A User Manual page 222

Falcon R-Class | User Guide
Table 4-156: LLDP MED Configuration Parameters
Fast start repeat count
Fast start Rapid startup and Emergency Call Service Location Identification Discovery of
repeat count endpoints is a critically important aspect of VoIP systems in general. It is best to
advertise only those pieces of information which are specifically relevant to
particular endpoint types (for example only advertise the voice network policy
to 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 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 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.
LLDP Interface Configuration
It is possible to select which LLDP-MED information that shall be transmitted to the neighbors.
When the checkbox is checked the information is included in the frame transmitted to the
neighbor.
Interface
Capabilities
Policies
Location
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The port name to which the configuration applies.
When checked the switch's capabilities is included in LLDP-MED
information transmitted.
When checked the configured policies for the interface is included in LLDP-
MED information transmitted
When checked the configured location information for the switch is
included in LLDP-MED information transmitted