The BIG-IP® system supports Link Layer Discovery Protocol (LLDP). LLDP is a Layer 2 industry-standard protocol (IEEE 802.1AB) that gives a network device such as the BIG-IP system the ability to advertise its identity and capabilities to multi-vendor neighbor devices on a network. The protocol also enables a network device to receive information from neighbor devices.
LLDP transmits device information in the form of LLDP messages known as LLDP Packet Data Units (LLDPDUs).
In general, this protocol:
Using the BIG-IP Configuration utility or tmsh, you can use this particular implementation to configure BIG-IP system interfaces to transmit LLDPDUs to neighbor devices. More specifically, you can:
The following illustration shows a BIG-IP system that transmits LLDP messages to three neighbor devices: another BIG-IP system, an external switch, and an external router. Note that LLDP is enabled on all of the devices.
The BIG-IP system and LLDP transmittal
Perform these tasks to implement Link Layer Discovery Protocol (LLDP) on selected BIG-IP system interfaces.
You can configure a set of general LLDP properties that apply to all interfaces on the BIG-IP system. These settings pertain to LLDP message transmission frequencies and the maximum number of neighbors to which each interface can send LLDP messages.
This implementation results in this LLDP configuration:
In addition, the content of the LLDPDUs that each BIG-IP system interface sends to its neighbors contains this information: