Difference between EIGRP and OSPF:
|Advanced Distance Vector Routing protocol
|Link State Routing protocol
|Open standard(informational). EIGRP was converted to open standard in 2013.
|Open standard of IETF, supported by most vendors.
|Fast sub-second convergence
|Slower convergence than EIGRP
|Ease of configuration
|Does not support TE (Traffic Engineering)
|Can not build a hierarchical network
|Can build a hierarchical and scalable network.
|Uses DUAL (Diffused Update Algorithm) for best path calculation
|Uses Dijkstra’s algorithm
|Summarization can be performed on any Router in EIGRP domain (infact per interface)
|Summarization only possible on ABR and ASBR
|Improved Memory and CPU utilization
|High memory and CPU utilization compared to EIGRP
|Intelligent bandwidth control like available Bandwidth is considered while determining rate of transmitting updates.
|EIGRP considers multiple parameters like Bandwidth, delay reliability and load while calculation optimal route. This complex calculation criteria is helpful in scenarios like wireless and multiple WAN path.
|Only bandwidth considered while calculating optimal path.
|Supports IPX and Appletalk
|Does not support IPX and Appletalk
Related – OSPF vs ISIS