design of a real routing v. endpoint id seperation

John Dupuy jdupuy-list at socket.net
Mon Oct 24 17:53:12 UTC 2005



>One way to do this is for two ISPs to band together
>in order that each ISP can sell half of a joint
>multihoming service. Each ISP would set aside a
>subset of their IP address space to be used by many
>such multihomed customers. Each ISP would announce
>the subset from their neighbor's space which means
>that there would be two new DFZ prefixes to cover
>many multihomed customers.
>
>Each multihomed customer would run BGP using a private
>AS number selected from a joint numbering plan. This
>facilitates failover if one circuit goes down but
>doesn't consume unneccesary public resources per customer.
[...]

I've heard of this from others as well. It seems to be technically 
feasible, but I am curious about the social aspect: would ISPs actually do 
this? Would customer's find it acceptable? (given it still locks them to an 
ISP, now to two of them.)

In fact, this is technically feasible right now with IPv4. Does anyone know 
of a pair of ISPs doing this?

John  




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