EIGRP1.  Back up routes (fast convergence)2.  Simple configuration3.  Flexibility in Summarization4.  Unequal Cost Load Balancing5.  Combine best of Distance Vector and Link State

TABLES NEIGHBOR TABLE = lists adjacent routers TOPOLOGY TABLE = lists all possible routes including feasible successors ROUTING TABLE = lists the successor routes

TERMINOLOGY FEASIBLE DISTANCE  (FD) ADVERTISED DISTANCE (AD) SUCCESSOR  =  PRIMARY ROUTES FEASIBLE SUCCESSOR  =  BACKUP ROUTES ACTIVE ROUTE  =  ACTIVELY LOOKING FOR A BACKUP PASSIVE  =  ROUTE IS STABLE

****TO BE CONSIDERED A FEASIBLE SUCCESSOR, THE AD MUST BE LESS THAN THE FD OF THE SUCCESSOR****

NEIGHBOR RELATIONSHIPS HELLO  =  FORMS RELATIONSHIP  224.0.0.10 UPDATE  =  SENDS UPDATES QUERY  =  ASKS ABOUT ROUTES REPLY  =  RESPONSE TO A QUERY ACK  =  ACKNOWLEDGES THE UPDATE, QUERY, AND REPLY MESSAGES

EIGRP METRICS BANDWIDTH (K1) DELAY (K3) RELIABILITY (K4 AND K5) LOADING (K2) MTU

EIGRP