Link Layer Discovery Protocol (LLDP)

 LLDP is a layer two discovery protocol same as CDP but The major difference between the two is that LLDP is an open standard and  CDP is a Cisco proprietary protocol that runs only on Cisco devices.

LLDP uses attributes called TLV. These are called TLVs (Type, Length, Value). Devices that support LLDP use TLVs to send and receive information to their directly connected neighbors on the network. 

Find the TLV given below.

 

1. Port description TLV
2. System name TLV
3. System description TLV
4. System capabilities TLV
5. Management Address TLV

By default, the LLDP is disabled on Cisco devices depending on IOS but you can enable it manually.

Configuration & Verification.

R1(config)#lldp run

R1#show lldp neighbors

R1#show lldp neighbors detail