EIGRP Neighbors

R1(config)#router eigrp 100

R1(config-router)#net 10.1.12.0 0.0.0.255

R1(config-router)#no au

R1(config-router)#end

R2(config)#router eigrp 100

R2(config-router)#net 10.1.12.0 0.0.0.255

R2(config-router)#no au

R2(config-router)#end

R1#sho ip eigrp neighbors

IP-EIGRP neighbors for process 100

H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq

                                            (sec)         (ms)       Cnt Num

0   10.1.12.2               Fa0/0              9 00:17:36  112   672  0  4

How to do Unicast?

R1(config-router)#neighbor 10.1.12.2 fa0/0

R1(config-router)#end

R2(config)#router eigrp 100

R2(config-router)#neighbor 10.1.12.1 fa0/0