Failover from MPLS network to EIGRP network, need help.

[1alan.scott]

I hope I explain this right. We are about to add an MPLS Circuit between HA and SA sites. Currently We have HA Connecting to AV site via ATM and SA connecting to AV site via Frame-relay. All routes are via EIGRP.

From what we gather from MPLS you need two subnets to connect to telco. A 30 bit for SA local and a 30 bit for HA local, with what ever in the MPLS cloud.

Our question is this: If the 30 bit HA site subnet goes down and we are at the SA site. How do we get the SA interface to go down so that eigrp will pick up the link/path to the AV site as another path? If the MPLS cloud is up the interface will stay up right?

[sbilgi]

Check here :

http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/cfgnotes/osm_inst/mpls.htm

[olorunloba]

The interface does not need to go down for EIGRP to realise that the link is down. When the link goes down, EIGRP looses adjency over the link, and its reconverge to any other available link. You should therefore not have problems