I have a minor issue I need help with.
We have installed some dsl and cable modems at various remote sites and are running GRE IPsec tunnels over the connections back to our HQ. These are always up connections using EIGRP, that take over if the primary T1s ever fail. We are using BGP over an MPLS network on the primary.
Overall this works great. It fails over only losing a few packets on almost all the backup vpns, except for a few. Some take as long as 3 min to pick up the backup connection. Once they are on they work fine, but does anyone know the reason as to why the descrepancy on a handful of the sites? The configs are the same and the vendors are different (so not a vendor issue). Is there BGP or routing issue on some that would delay the backup from taking over on some of the sites but not the others?
any help would be appreciated.