On Fri, Aug 28, 2009 at 11:52 AM, Ivan Pepelnjak <ip@ioshints.info> wrote:
This might give you some ideas (also solves the overlapping customer address problem):
http://www.nil.com/ipcorner/FlexExtraImplement/
Ivan
That looks very interesting. But it assumes we have a physical interface in the core for every remote customer correct? I guess that can be accomplished via GRE tunnels over a providers MPLS cloud. What about a MPLS provider being the transport where the exCore has a single interface to that provider? That's what I *think* we need to do and why I consider NAT and advertising of a public segment from each customer and using BGP communities to keep each customer from 'knowing' about each other. So in the core router(s) we'd only have unique IP's, each Customer could have a single MPLS drop that reaches our shared segments as well as their internal segments.