Indu-Sol PROmesh P20, User Manual

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PROmesh P20 - User Manual 47
enter values into fields w0 – w3. W3 is for packages with the highest priority. The following setting
is recommended:
▪
w3 = 8 packages
▪
w2 = 4 packages
▪
w1 = 2 packages
▪
w0 = 1 packages
When using Quality of Service, the flow control ought to be switched off because data packages
are transmitted regardless of the priority when the flow control is activated.
3.10.2 Link Layer Discovery Protocol (LLDP) – Topology
The Link Layer Discovery Protocol (LLDP) is a manufacturer-independent Layer-2 protocol which provides
the possibility to exchange information between neighbouring devices.
The LLDP topology presents the neighbouring devices by ports with IP addresses and description (see
Figure ).
An LLDP agent is running on every device that supports LLDP. This sends information about the own status
in periodic intervals and receives information from the neighbouring devices. You can set the interval at
which the information is sent under Sending Cycle . The default setting is 5 seconds.
The following information is compiled and sent by the LLDP:

System name

System description

Port description
The web interface contains an up-to-date overview with information regarding directly neighbouring
devices.
Information on the following is provided:

System name: Here you can find the name of the connected device.

Chassis ID: Here you can find the PROFINET name of the device.

Local interface: Here you can find the port of the PROmesh P20 to which the other device is
connected.

Port ID: Here you can find the port of the connected device via which the device is connected to
the switch.

System description: Here you can find a description of the connected device.