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4.1.12.2 LLDP - LLDP-MED
This page allows you to configure the LLDP-MED. This function applies to VoIP
devices which support LLDP-MED.
Fast start repeat count
Fast start repeat count
Rapid startup and Emergency Call Service Location Identification Discovery of
endpoints is a critically important aspect of VoIP systems in general. In addition, 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
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