caching at windmills (i mean exchange points)

==> From: Randy Bush

> I read your proposal an have a question. I assume that your MAE-west
> cache will act as a parent for the MW ISP's (otherwise, there's no data
> in the cache). That means that all outbound traffic from MW is routed
> through your cache, isn't it? That also means that e.g. all
> transatlantic traffic will flow through your lines. Or am I missing
> something?

You are not differentiating between an proxy cache and an interceptor
cache. The NLANR cache is a proxy cache. Clients/peers/children must
consciously point at it.

I know. Still, for a cache to fill it has to fetch docs and thus act as
a parent. If the NLANR cache acts as a parent for all MW connected
ISP's than *all* misses from those ISP's get routed through the NLANR
cache and for the transatlantic traffic the lines of NLANR's ISP will
fill up. No?


The part I think you missed is that the NLANR cache at MAE West will not
have an ISP in the usual sense, and will not have a default route.
Instead, it will have routes to whatever places the ISP's who participate
in the cache experiment choose to give it. In a sense, all the providers
who participate in the experiment will jointly act like "NLANR's ISP", and
will jointly carry the traffic.

--apb (Alan Barrett)