Intermittent Connectivity due to route keeps flapping
I have an EIGRP WAN with 2 routers at each location. Each router at remote sites has a T1 connection to a MPLS WAN provider (one to AT&T and one to Sprint). And at HQ office and DR location I have one router with a 10M connection to AT&T and one router with 45M connection to Sprint. And Sprint is the primary connection between HQ and all remote sites due to the fact that Spint has a bigger pipe. The problem I am experiencing is that the route from HQ router to Sprint MPLS cloud keeps flapping and Sprint is saying there is a routing loop between the two networks. I having a hard time trying to pinpoint the problem when the two providers are playing finger pointing at each other.
can someone point me to the right direction on where start ?
has anybody ran into this issue before ? with similar WAN setup.
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