In this article, we will discuss some common differences between EIGRP & OSPF. Both are dynamic routing protocols and both have their pros and cons. If you are new to the dynamic routing protocols, I recommend you to go through the EIGRP & OSPF, it will help you to understand the below differences. Let’s start!
Key Differences: EIGRP vs OSPF
- EIGRP stands for Enhanced Interior Gateway Routing Protocol & OSPF stands for Open Shortest Path first.
- EIGRP is a Hybrid Routing Protocol having the features of both Distance Vector and Link State Routing Protocols. However, OSPF is a link-state routing protocol.
- EIGRP is a Cisco Proprietary Routing Protocol, but OSPF is standardized by the Internet Engineering Task Force (IETF).
- EIGRP uses a combination of Bandwidth, Load, Total Delay, Reliability, MTU, Hop Count as its metric. OSPF uses the Path Cost as its metric.
- EIGRP is the only routing protocol, that supports unequal cost load balancing. However, OSPF only supports equal-cost load balancing.
- Administrative Distance (AD) Value of EIGRP is 90 & 170 (Internal & External). OSPF AD value is 110.
- EIGRP Uses Diffused Update Algorithm (DUAL) to calculate the best route. However, OSPF uses the Dijkstra Algorithm to calculate the best path.
- EIGRP Multicast address is 126.96.36.199 & OSPF Multicast addresses are 188.8.131.52 & 184.108.40.206.
- EIGRP uses a feasible successor as a backup path for the destination networks. So, the Convergence time is very less as compared with OSPF.
Note: In some cases of EIGRP, convergence can be almost instant
Now, let’s recap all the differences between EIGRP and OSPF.
|EIGRP Stands for Enhanced Interior Gateway Routing Protocol||OSPF Stands for Open Shortest Path First|
|Hybrid Routing Protocol||Link-State Routing Protocol|
|Cisco Proprietary||Open Standard Routing Protocol|
|EIGRP uses Bandwidth, Load, Total Delay, Reliability, MTU, Hop Count as it's metric||Uses path cost as its routing metric|
|Support Unequal cost load balancing||Only Support equal-cost load balancing|
EIGRP Summary Route - 5
Internal EIGRP - 90
External EIGRP - 170
OSPF - 110
|Uses DUAL Algorithm||Uses Dijkstra Algorithm|
|Multicast address is 220.127.116.11||Multicast address is 18.104.22.168 & 22.214.171.124|
|Convergence Time is very less.||Convergence Time is more than EIGRP.|
Download: EIGRP vs OSPF
- EIGRP: The complete guide for Beginner and Expert
- OSPF | Open Shortest Path First | Quick Overview
- Download Cisco Packet Tracer
- Download GNS3 Latest Version
- Dynamic Routing: A Complete Guide
- OSPF Neighborship States
Well, in this article, we have discussed approx 10 differences between EIGRP & OSPF. No doubt, both routing protocols are very good for medium to large-scale enterprises. However, the use of one of the routing protocols depends on various factors such as device hardware, capabilities, support, etc.
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