[rrg] Fundamental objections to a host-based scalableroutingsolution

[Noel Chiappa]

    > From: "Tony Li" <tony.li at tony.li>

    > 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?

This is slightly off-topic, but I'm curious, so please forgive me.

Is the problem here with the basic MPLS specification (i.e. no semantics for
allowing a single label to refer to more than one out-bound link, precisely
to cleanly allow ECMP _at the switching level_), or with the control plane
(which doesn't allow multiple MPLS paths to be created for ECMP use to a
given destination)? Or both?

	Noel