EIGRP or OSPF Which one should I use? pdf
| EIGRP | OSPF |
| EIGRP forms adjacencies and exchanges routing updates with neighbors | OSPF forms adjacencies with DR/BDROSPF can be more efficient than EIGRP for large meshed networks |
| EIGRP uses metric based on bandwidth and delay | OSPF uses interface cost (inversely proportional to bandwidth)EIGRP may provide more flexibility in selecting best path |
| EIGRP by default limits usage to at most 50% of link bandwidth in worst case | OSPF uses 100% of link bandwidth when required EIGRP may be better suited for lower bandwidth WAN applications |
| EIGRP provides feature velocity, but is Cisco-proprietary | OSPF is an Internet RFC standard |
| EIGRP sends hop-by-hop queries only when Feasible Successor cannot be found | OSPF regularly syncs LSA database and floods network with topology change EIGRP can be more efficient by minimizing routing information exchanged |
| EIGRP is a conceptually simpler routing protocol | OSPF’s rules for different types of areas and LSAs can be conceptually more difficult to understand Some customers believe EIGRP is easier to implement, but both are feature-rich and scalable |
| EIGRP supports automatic summarization | OSPF’s requires manual summarization Care is needed in either case to ensure proper summarization! |
| EIGRP supports both equal and unequal cost load sharing | OSPF only supports equal cost load sharing |
OSPF Troubleshooting
