Link Layer Discovery Protocol
The Link Layer Discovery Protocol ( LLDP ) is a vendor-neutral link layer protocol in the Internet Protocol Suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, principally wired Ethernet . [1] The protocol is formally referred to by the IEEE as Station and Media Access Control Connectivity Discovery specified in IEEE 802.1AB [2] and IEEE 802.3-2012 section 6 clause 79 . LLDP performs functions similar to several proprietary protocols , such as Cisco Discovery Protocol , Foundry Discovery Protocol , Nortel Discovery