LLDP
Ethernet switches use link layer discovery protocol (LLDP) to learn and distribute device information on network links. The information enables the switch to quickly identify a variety of devices, resulting in a LAN that interoperates smoothly and efficiently.
LLDP-capable devices transmit information in type, length, and value (TLV) messages to neighbor devices. Device information can include information such as chassis and port identification, and system name and system capabilities. The TLVs leverage this information from parameters that have already been configured in network devices.
TLVs fall into either basic management TLVs or organizationally-defined TLVs.
LLDP complies to the IEEE 802.1AB (2005) standard.
- NAS LLDP maintains no cache
- The NAS packet I/O module is responsible for sending the received LLDP packets to the appropriate LLDP application module.
- LLDP is provided as part of the OPX package, and you can install LLDP and execute it — only one LLDP must be executed to guarantee packet Tx/Rx
