> Waitaminute - isn't the whole *purpose* of layer 3 > that the network makes these routing decisions? > > If there are N routers in an ISP, I would expect the > ISP to connect to X endsystems, where 10N < X < 1000N. > How does knowing about X endsystems scale better than > knowing about N intermediate systems? > > Am I missing something here?
I think there's some misunderstanding. Nothing has to know about X endsystems. Nor did anything have to know about N routers before. In the shim6 approach, a host only needs to know about its correspondent hosts. From a scalability perspective, this is unchanged from previously, only the constants are bigger. Tony
