BGP Logical Link Discovery Protocol (LLDP) Peer Discovery
Cisco Systems
Arrcus, Inc
LinkedIn
Juniper Networks
Alibaba
Link Layer Discovery Protocol (LLDP) or IEEE 802.1AB is implemented in networking equipment from many vendors. It is natural for IETF protocols to avail this protocol for simple discovery tasks. This document describes how BGP would use LLDP to discover directly connected and 2-hop peers when peering is based on loopback addresses.