GRE Tunneling through MPLS

Unanswered Question
Jan 24th, 2008
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We have a headquarters 4.5 multilink line going to an MPLS cloud supporting 14 remote sites. We have now unwisely aquired a "managed" VPN failover "solution" for 4 of these remote sites utilizing HSRP. The problem is the black holing caused by BGP latency which is destroying time sensitive apps on the remote end.(AS400 telnet sessions)

I want to go with PrF which is pretty cutting edge stuff but relatively simple to manage this issue. We could not only eliminate BGP latency but also eliminate any HSRP latency as well as it would no longer be needed. Our "PROVIDER" (and i use the term loosely) is lobbying that we incorporate GRE tunneling and OSPF to circumvent the BGP latecy problem. If they were to convince the less than slightly gullible management here ,would I be looking at having to build tunnels at all 14 sites to accomadate the 4 sites new needs?? (put another way)If I create a gre tunnel for the 4 sites with the new VPN failover "solution" will this affect the other sites behavior. I don't know enough about the nature of tunneling unfortunately and I don't want to get dragged any deeper down the wrong path.

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