lldpd - 1.0.11-1+deb11u2 main

LLDP is an industry standard protocol designed to supplant
proprietary Link-Layer protocols such as Extreme's EDP (Extreme
Discovery Protocol) and CDP (Cisco Discovery Protocol). The goal of
LLDP is to provide an inter-vendor compatible mechanism to deliver
Link-Layer notifications to adjacent network devices.
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This implementation provides LLDP sending and reception, supports
VLAN and includes an SNMP subagent that can interface to an SNMP
agent through AgentX protocol.
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This daemon is also able to deal with CDP, SONMP, FDP and EDP
protocol. It also handles LLDP-MED extension.