1) Address-Family
2) Topology Base
3) AF-Interface
1) Address-Family
--> Network Commands applied here
--> Router-ID is configured under this section
--> Autonomous System
Example: Router eigrp ccie
address-family ipv4 unicast autonomous system 1
eigrp router-id 1.1.1.1
network 1.0.0.0 0.255.255.255
exit
2) Topology Base
--> Redistribution Configured here
---> Route Filtering also
Example: Router eigrp ccie
topology base
redistribute connected
3) AF-Interface
--> Hello and Hold down timers are configured here
--> Summarization and authentication is also configured here