What is difference between EIGRP & OSPF ?

EIGRP-

1-CISCO PRORATITY

2-U CONNECT UP TO255 ROUTER

3- HIGH CONVERSION RATE

4-EQUAL ND UNEQUAL LOAD BALENCE

5-SUPPORT AUTO AUMMERIZATION

6-AD90

8-USE MULTICAT ADDRESS224.0.0.10

9-IT'S SUPPORT ADVANCE VECTOR ROUTIG PROTOCOLE

OSPF:

1-OPEN STANDERE

2-NO LIMIT FOR CONNECTING ROUTER

3-MIX NO OF VENDER DEVICES

4-HIGH CONVERSION BUT LESS IN COMPARE EIGRP

5-OSPF NOT SUPPORT UNEQUAL LOAD BALENCE

6 -NOT SUPPORTED AUTO ROOT SUMMERIZATION

7- AD110

8 -USE MULICAST ADDRESS224.0.0.5/6

9-IT'S SUPPORT LINK STATE ROUTING PROTOCOLE

Routers in EIGRP knows only what their neighbors forward to them, while OSPF every router know the all topology of the area. in my opinion thats the more important difference in between the two protocols. 

Here you go with the differences. Hope this helps you

OSPF

ü  Its link state protocol which sending hello

ü  Packet to its neighbours

ü  Give best path6 backup paths

ü  It a supports the subneting (classless)

ü  Administrative distance110

ü  Using wildcard0.0.0.0

ü  Autonomous1-65535

ü  Using area

OSPF: Dijkstra's algorithm. Link State Protocol. Can be divided into areas (which are good like stub, not so stubby, completely stubby. Backbone). With OSPF you would need to limit each area to500 Routers (I think…please check that figure) due to the overhead of the SPF algorithm.  I don’t think EIGRP suffers from a limitation to the amount of routers you can place…this one I am not100% about (Perhaps one of the CCIE’s could comment on this point).

EIGRP

ü  Hybrid protocol

ü  eigrp enhance interior gateway protocol

ü  90 administrative distances

ü  Supporting subneting

ü  Using area

ü  Autonomous1-65535

EIGRP is and Advanced distance vector routing protocol which uses DUAL (Diffuse Update Algorithm). Distance vertor protocols are also called as routing by rumour protocols as they are not entirely aware of topological information.

EIGRP

• Advanced Distance Vector Routing Protocol
• Cisco Property Protocol
• Use DUAL Algorithm
• Use composite metric
• Manual summarization can be done on any router
• Support equal and unequal load balancing
• Use Admin distance =90
• Use multicast address224.0.0.10

OSPF

• Link State Routing Protocol
• Open standard  Protocol
• Use shortest path first (SPF) Algorithm
• Use bandwidth  metric which is called cost
• Manual summarization can be done on ABR and ASBR routers only
• Support equal load balancing only
• Use Admin distance =110
• Use multicast address224.0.0.5, and224.0.0.5