  The purpose of data-link layer discovery protocols is to provide the network
administrator with the current information (i.e., various Layer 2 and 3
parameters) about neighbor devices. These protocols are invaluable for network
monitoring, maintenance, and troubleshooting. However, they start to play an
important role in the operation of data-centers and other high-availability
networks. This paper outlines design, implementation and deployment of Cisco
Discovery Protocol and Link Layer Discovery Protocol simulation modules in
OMNeT++ simulator.
