Migrating from Rip to eigrp
While migrating to EIGRP, leave RIP running on all the routers to avoid a loss of connectivity. On RIP
Routers, configure EIGRP for Autonomous System 24 EXAMPLE.
Vis(config)#router eigrp 24
use this command on all routers
clear ip route *
To complete the migration from RIP to EIGRP, disable RIP on all routers using the command
no router rip.
To migrate to EIGRP it's best to change the distance for RIP before configuring your routers.
Give RIP preference over EIGRP for routing stability. This can be done without down time.
The default administrative distance for RIP is 120, wheras EIGRP is more preferred due to it's AD of 90. Setting RIP to 89 will maintain RIP learned routes in RIB during installment of EIGRP protocol on your network.
Now you can safely configure EIGRP.
router eigrp 1
Review your network configuration. Are all neighbors visible and have all routes been exchanged. You should review the topology database on all routers for routing accuracy.
When everything is to your satisfaction you schedule a maintenance window (i.e. downtime) to convert your network to EIGRP. You'll do this by removing the "distance 89" from the RIP process.
Now your RIP routes will eventually age out and EIGRP will converge. You'll leave RIP configuration untill the topology has proven to be stable.
If problems arise, you'll simple put back the "distance 89" under the RIP process to revert to the old situation.
After some time you can remove the RIP process from all routers by issueing "no router rip".
Hope this helps.
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