CISCO ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL (EIGRP)
Enhanced Interior Gateway Routing Protocol (EIGRP) is the upgraded version of Cisco's Interior Gateway Routing Protocol (IGRP). The EIGRP convergence technology is based on an algorithm called the algorithm for diffusing updates (DUAL). The algorithm maintains a continuous loop-free operation during a route measurement and makes it possible to synchronize all devices involved in topology transition. EIGRP has three tables, First, Neighbor Table . Second, Toplogy Table . Third, Routing Table.
The picture above is the the design for applying the EIGRP Neighbor Table, Now please set the IP Address for R1 , R2 , and R3 , after you make the IP Address for each, you can run command for three tables EIGRP, follow the command below,