EIGRP and OSPF clarity

Robbo777

Hi, i just wanted some clarity on this summary i have for these 2 protocols and how they function.

So EIGRP is a hybrid distance vector protocol that forms neighbours and forwards their routing table onto their directly connected neighbours.

OSPF, provided that they're all in the same area, forwards its routing table onto all the routers in the area even if they are not directly connected to that specific router.

So basically if there was a big switch and connected to this switch was 20 routers, each router running OSPF, then they would flood the entire switch with its own individual routing table. Whereas if it was 20 routers running EIGRP, then they would only forward their routing tables onto the router next to them?? Or am i totally wrong about that haha?

Thanks for the help everyone on this.

networker050184

They aren't forwarding their routing tables in either protocol.

EIGRP uses a topology table to find the best paths and advertises those in updates, certain rules applying of course. Since only best paths are sent each router doesn't actually have a complete view of the network.

In OSPF every router in an area generates LSAs for it's connected networks. These are flooded throughout the area and each router independently builds it's tree of the network. Every router in the network has a complete view.

The outcome is fairly similar in that these best routes are then populated into the local routers routing table.