what is the difference between eigrp and ospf
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Answer Posted / pranav
There are many differences between these two routing protocols.
1)Ospf is open standard and EIGRP is cisco propreitary.
2)Administrative distance for OSPF is 110 and for EIGRP(Internal Eigrp 90 & External Eigrp 170).
3)Ospf uses Cost as the metric values to calculate the shortest path wheres as EIGRP used 5 metric values
(Bandwidth,Delay,Load,MTU & Reliablity) to calculate the shortest path.
4)Eigrp use Dual algorithm for calculating shortest path where as Ospf use SPF algortithm fro calculating shortest path.
5)Eigrp use multicast address 224.0.0.10 where Ospf use multicast address 224.0.0.5 goes for all ospf routers and 224.0.0.6 goes for all DR and BDR
5)In OSPF, there is no Backup route options, wheres as in EIGRP it will maintain Backup route. So if main link goes down, it will directly take the backup route and starts working, where as in OSPF, if main route fails
it has to recalculate the shortest path.
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