EIGRP Characteristics

1. Hybrid Protocol
2. Cisco Proprietary
3. Created in 1994
4. First Release in IOS 9.21
5. Use IP Port 88
6. Make Automatic Summarization
7. Classless Protocol
8. Support Manual Summarization
9. Send Updates to Multicast Address 224.0.0.10
10. Hello-Interval  5 Seconds
11. Hold-time    15 Seconds
12. Support MD5 Authentication
13. Administrative Distance for Internal routes is 90
14. Administrative Distance for External routes is 170
15. has a Max Hope count of 255, by default is 100.
16. Maximum path load balancing are 6 and by default 4
17. Send non-periodic, partial and bounded updates.
18. Default composite Metric of Bandwidth and Delay
19. Use DUAL for Loop Prevention and generating Successor / feasible Successor
20. Does not restrict that neighbors must have same Hello and Dead interval timers like OSPF