|We're generally not switching IP on the bare metal even now. As often |as not we're switching ethernet frames, MPLS packets or sonet frames. |Map-encap changes the adjacency of IP nodes in the network but it |doesn't fundamentally change the switching model. Right?
Hi Bill, Right now, when we're doing L3 switching on an IP header, I consider that to be the atomic primitive, regardless of the L2 encapsulation. What has changed has been the introduction of these 'L2.5' technologies like MPLS. There we switch based on the label, not on the real payload addressing, and it does introduce complexity. Are we very sure that that model is what we're willing to live with moving forward? Consider that some MPLS implementations, as part of the MPLS switching operation, grovel all the way up the label stack and find the IP header to hash its addresses so that they can correctly do ECMP. Is that the kind of architecture that we consider clean and neat? Regards, Tony _______________________________________________ rrg mailing list [email protected] https://www.irtf.org/mailman/listinfo/rrg
