On Aug 9, 2010, at 8:07 AM, Joel M. Halpern wrote: > There is an interesting question of how to handle congestion management when > we move the multi-pathing down to the network layer. > On the one hand, architecturally it seems appropriate for network layer to be > managing the path selection. > > On the other hand, the congestion behavior of the various paths is likely to > be quite different, and congestion response is definitely NOT the network > layer's responsibility. > > The correct balance is not obvious to me. (This is similar to, but not the > same as, the path selection policy issues that the MIF working group is > trying to understand.
I'd recommend that we also consider locator selection as another degree of freedom. I agree with Joel that flow control belongs to the transport layer, and that path selection is part of the network layer. Is locator selection a transport function? It would seem that having it be a unilaterally network layer function is over constraining the architecture. Yet, transport cannot perform intelligent locator selection without network layer input. Tony _______________________________________________ rrg mailing list [email protected] http://www.irtf.org/mailman/listinfo/rrg
