EIGRP Advertise 2 Default Routes

[Mokhalil82]

Hi Guys

I have 2 hub sites, each with its own internet breakout. Each spoke has a tunnel to both hubs.

I want both hubs to advertise out a default route using EIGRP, but I want Hub 1 to be preferred over hub 2. But if hub 1 fails then I want the spokes to use hub2 as a failover.

Can this be achieved by using a static route at each hub site such as:

Hub1 - ip route 0.0.0.0 0.0.0.0 x.x.x.x

Hub2 - ip route 0.0.0.0 0.0.0.0 x.x.x.x 190

Then redistribute these statics into EIGRP. Will this ensure Hub1 route is preferred. Does the administrative distance value for the Hub2 static get carried over into eigrp

Thanks

[Mark Malone]

Ye that should work i persume both routers are in the same eigrp AS and make sure your metrics are correct on the redistribution bit.Only 1 route should exist in the route table but your topolgy table should show you the backup route thats advertised with worse metric.

[Mokhalil82]

Il give that a shot, is there a way of instead pushing out a summary route from each site and assign a metric or AD to it?

[paul driver]

Hello

you can set default route via a eigrp summary at interface level and apply a admin distance and even Leak specific routes 

Or from a spoke perspective you can manipulate received routes for lease preferred path via acl and distance command 

lots of ways just depends how much admin you like to take on in terms of managing it!

res

paul

[Masoud Pourshabanian]

Hello,

On Hubs, you can just redistribute routes and then on spokes you can change delay to prefer one route over the other.

Spoke#  int tunnel 1

              des to Hub 1

              delay 1

            [ bandwith also works]

Spoke#  int tunnel 2

              des to Hub 2

             delay 100000

             [ bandwith also works]

in this way, all routes from Hub1 are prefered.

I hope I understood your question correctly.

Masoud

[paul driver]

Hello

Just like to add that I am not sure this will work on the admin distances of external routes I think can only be changed through K value metric!

Something like this should work:

Hub1
router eigrp xxx
redistribute static metric 2 1 1 1 1  <--------------preference

Hub2
router eigrp xxx
redistribute static metric 1 2 1 1 1

res
Paul

[Jon Marshall]

Edit - Paul's solution of just using two default routes ie. no AD and manipulating the metric when redistributing may well be the answer but it's still not entirely clear how you see this working.

Jon