Link Layer Discovery

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

Link Layer Discovery Protocol (LLDP, IEEE 802.1AB) The Link Layer Discovery Protocol (LLDP) is a vendor neutral layer 2 protocol that can be used by a station attached to a specific LAN segment to advertise its identity and capabilities and to also receive same from a physically adjacent layer 2 peer. History After several years of development LLDP was formally defined in May of 2005 as IEEE Std 802.1AB-2005. LLDP was developed as an open and extendable standard. It was modeled on and borrowed concepts from the numerous vendor proprietary discovery protocols such as Cisco Discovery Protocol