Re: [tcpm] WGLC on draft-ietf-tcpm-early-rexmt-01

[Mark Allman <[e-mail]>]

> Making SACK mandatory is far outside the scope of this draft
> and the WGLC ... I think it should be in a separate thread if
> we want to consider it, and not impact the near-term progress
> of this draft, as this is a much larger (and harder) topic.

Perhaps we took this comment two different ways.  I took it to suggest
only specifying the SACK variant of early retransmit---which I believe
would be perfectly within he purview of this draft.

> The authors can probably speak to the second point about
> pegging the retransmit threshold to the observed reordering,
> but I would guess that the challenge there lies in measuring
> the observed reordering within resource limitations.

Per my previous message ER is so scoped to particular situations that
this isn't all that possible.  We sketch some thoughts to protect
against pathological reordering in the appendix.  Our intent for this
document is that it be experimental and so it is not clear to me what
more we can or should do before this goes experimental.  But, obviously,
we're happy to have input.

allman