[Iccrg] Explicit feedback

[Tony Li]

> 1. RED is much easier to deploy without ECN than it is with ECN
> 
> 2. Explicit feedback that is not based on the current outbound
>    queue length might be easier to deploy


Yup.

 
> ... obviously, with 2, the question arises: what else could
> we feedback to sources?
> 
> What about a traffic measurement from the ingress link, such
> as MIB2-ifInOctets but obviously with a rule that these data
> must be updated whenever explicit signaling is requested -
> would that be more or less effort than feedback that is based
> on egress queue information?


That would be possible.  I'm not sure I see that that's useful, however.
Due to asymmetic routing, I'm also not sure that output bytes would be
useful either.

Tony