EIGRP-3

Question 1

Why would you choose to use EIGRP?

Answer 1

1. Backup routes (Fast convergence/DUAL)
2. Simple configuration
3. Flexibility in Summarization
4. Unequal cost load-balancing
5. Combines best of distance Vector and Link State (Limited routing information, but Backup Paths)

Question 2

What is the Multicast IP address used by EIGRP?

Answer 2

EIGRP uses the multicast address 224.0.0.10.

Question 3

What are the different tables in EIGRP?

Answer 3

A router running EIGRP maintains three tables:

• Neighbor Table: Directly connected EIGRP neighbors.
• Topology Table: All best paths Succecor and Feasable Succecor paths.
• Routing Table: DUAL Picks the best path and injects it into the routing table.

Question 4

Is it is necessary to have the same AS on routers participating in EIGRP?

Answer 4

Yes, it is necessary to have the same Autonomous System (AS) number configured on all routers participating in EIGRP in order for them to be able to exchange routing information and form neighbor relationships.

Question 5

What is the maximum Hop-count for EIGRP?

Answer 5

The maximum hop count for EIGRP (Enhanced Interior Gateway Routing Protocol) is 255.

If a path exceeds the maximum hop count, the route is considered unreachable, and the router will not consider it a valid path to the destination network.