R1(config)#router eigrp 100 //100 is an Autonomous System number (AS)
R1(config-router)#no auto-summary //Disable auto-summary feature
R1(config-router)#network 10.12.1.1 0.0.0.0 //address and wildcard mask
R1(config-router)#end
show ip eigrp neighbors : show all neighbors that connected with R4
show ip eigrp interfaces : show all interface that using EIGRP protocol
show ip protocols : show EIGRP routing protocol (K value, Auto-summary status)
show ip eigrp topology : show topology of Eigrp routing
Note : via 10.34.0.3 is successor
via 10.43.0.3 is feasible
show ip eigrp topology all-links : list all link that connect to destination subnet (show ip eigrp topology show successor and feasible only)
