LLDP is a vendor-neutral layer 2 protocol. A device on a LAN segment employs LLDP to advertise its identity and capabilities, and it also receives this layer 2 information from other devices. LLDP is ideal for use in a multi-vendor environment.
LLDP defines a standard method for Ethernet network devices such as switches, routers, wireless LAN access points and other devices such as IP phones to advertise information about themselves to other nodes on the network and store the information they discover. Details such as device configuration, device capabilities and device identification can be advertised using this protocol.