EIGRP vs OSPF
IP Networking NT2640
Mr. M. G. Durazo Ed.
EIGRP vs OSPF
In this paper we will explore and compare EIGRP and OSPF protocols to determine if one might be better suited to a particular network. First I’ll explore their positive or negative features individually. Then I’ll do a more side-by-side comparison to see if there are more noticeable differences. Finally, I’ll make an informed decision on which protocol to choose based on network’s size, topology and more.
Enhanced Interior Gateway Routing Protocol or (EIGRP) is a protocol that lets routers exchange a copy of its neighbors routing tables. These tables are updated each time a new ...view middle of the document...
It appears that OSPF wins by popularity (it is open source), scalability, speed and support for new technology (IPv6 is fast). Although in today’s environment a smaller network may still want to use EIGRP for its ease of use and stability. Now if your network is expanding and you do need to upgrade to OSPF, there is a way to migrate safely.
Migrating from EIGRP to OSPF
Here are some rules to follow which will help keep you from breaking the network when upgrading this protocol stack.
1) Design the OSPF network, like how to divide the areas, what’s the routing policy.
2) Configure OSPF routing protocol on the EIGRP network, make the precedence of OSPF lower than precedence of EIGRP, then put the interfaces into OSPF areas.
3) Complete the configuration followed the second step, because the precedence of EIGRP is higher than OSPF, so only the EIGRP learned routes show up on routing table, OSPF learned routes do not show up on the routing table. So OSPF does not work at this time around.
4) After making sure everything is fine, changes the precedence of EIGRP and OSPF, and makes the precedence of EIGRP lower than OSPF. Because the precedence of OSPF is higher than EIGRP, so the...