What is LLDP?
LLDP (Link Layer Discovery Protocol)
is a vendor independent IEEE standard method of advertising
information about a device through a network connection
to another device. It can assist in determining network
topology. The LLDP information is sent from device
interfaces at a fixed interval and when received by a
switch, the LLDP data is recorded by the switch. The
data can consist of as little as the sending interface
MAC address (Windows 10/8.x) to details about the system name,
description, IP address and capabilities.
The LLDP information presented by the Switch Port Mapper
When the LLDP column is visible, the LLDP cells
show information from the device directly connected to
the port. This may include the sender's MAC address, IP
address, port name, capabilities, port description and
system name. Any information not sent is marked 'not
advertised'. If no LLDP is recorded for that port by the
switch, you will see N/A in the cell.