The ability to provide a choice of transit providers is often to some degree blocked by the requirement for copies of particular virtual route forwarding tables, to be present in the transit port logic of classical routers.

RRX Network is investigating mechanisms for dynamically allowing packet traffic to take a policy determined route, from the perspective of transit agreements, in the context of an Internet transit exchange (IX or TX).

A next generation router design recently under development might facilitate multiple copies of virtual forwarding tables, and also provide reporting, for traffic accounting, facilitating reciprocity agreements based on net flow.

It should be noted this arrangement depends to a great degree on ability to track, and accumulate statisitics reliably, on network flows.