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Chapter 3. System
2. Modify Fast start repeat count parameter, default is 4.
3. Modify Transmit TLVs parameters.
4. Modify Coordinates Location parameters.
5. Fill Civic Address Location parameters.
6. Fill Emergency Call Service parameters.
7. Add new policy.
8. Click Apply, will show following Policy Port Configuration.
9. Select Policy ID for each port.
10. Click Apply.
Parameter description:
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 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.
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