TopicIT Networking →
Simple definition
A protocol allowing neighbouring network equipment to announce itself between them.
Technical definition
Link Layerlist Exchanges information such as equipment name, port, capabilities or some network parameters between directly connected neighbours.
What is it used for ?
Identify what is connected to each port and facilitate network mapping.
Practical example
One switch can display that an IP phone is connected to its port 12 thanks to the information LLDP.
Common issues
- LLDP disabled
- Incomplete information by manufacturers
- Discovery data exposed on uncontrolled ports
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.