Re: Alternatives to source address rewriting (was RE: Preserving established communications (was RE: about draft-nordmark-multi6-noid-00)

[Erik Nordmark <Erik.Nordmark@sun.com>]

> Another way to handle this would be to bascially build two networks all 
> the way down to the host:
> 
> 
> ISP A     ISP B
>     |        |
> Router    Router
>     |        |
> Router    Router
>       \   /
>       Host
> 
> So the ISP selection happens inside the host, once a network is 
> selected it is no longer possible to deviate from the path intended by 
> the host.

Isn't that what source address based routing implies conceptually?
It can be implemented while sharing the routers as long as the routing
table has the entries learned from ISPA as tagged to only apply to packets
with a source address from A's prefix and vice versa.

   Erik