COMPUTER NETWORKING

Detailed explanation-1: -Hello packets are used for neighbor discovery. As soon as you send hello packets and receive them, your EIGRP routers will try to form the neighbor adjacency. Update packets have routing information and are sent reliably to whatever router that requires this information.

Detailed explanation-2: -EIGRP is a distance vector & Link State routing protocol that uses the diffusing update algorithm (DUAL) (based on work from SRI International) to improve the efficiency of the protocol and to help prevent calculation errors when attempting to determine the best path to a remote network.

Detailed explanation-3: -An EIGRP-based router keeps a copy of its neighbor’s routing tables. If it can’t find a route to a destination in one of these tables, it queries its neighbors for a route, and they, in turn, query their neighbors until a route is found.