EIGRP Routing Design Question

[dozier]

hello all.

i inherited a large frame-relay hub and spoke network with multiple hubs and using only static routing. there are about 10 hubs, and each remote router is connected to one of these hubs, plus a backup hub (the same for every router). we would like to implement a dynamic routing protocol, and i have experience with OSPF and EIGRP. we've decided on EIGRP, but here's the issue and hence my question: the WAN addresses *within* each hub are unique, but there is overlap from one hub to another. for instance, 10.1.1.1 is a WAN interface on Hub1, Hub2, Hub3, etc. Is this a problem for EIGRP? We don't really care about learning the WAN routes, just the loopbacks on the remote routers and some static routes, both of which *are* unique, unlike the WAN addresses.

I hope I made this clear. I understand the IP overlap is not ideal, but getting those changed is an even bigger project than implementing a routing protocol, so if I can avoid it, I will. I believe EIGRP should work, but I know
OSPF won't, because it won't be able to build an accurate picture of the network with all that overlap.

Thanks for your time!

 

[North323]

i dont think eigrp can do that either. when routes update in the AS you will have more than one 10.1.1.1 and wont update all the hubs

 

[jeter]

If it were me I would change the entire wan ip address.. It's going to be a routing nightmare if you continue down this path... You know the drill! Make a network drawing of your network and go from there.


Go Army!
Tek-TIP Member 19,650

 

[North323]

agree with jeter

 

[dozier]

thanks for the responses, i agree with jeter, too, but i still want to know if it would work without readdressing.

 

[North323]

no i dont think it would

 

[Minue]

Hello
Wouldn't it be possible to leave out the over-lapping router out of the EIGRP design.You can also try using secondary address on the interface,so as to not re-design.

Regards