Re: [tsvwg] The TSVWG WG has placed draft-kuhn-tsvwg-careful-resume in state "Call For Adoption By WG Issued"

Martin Duke <> Wed, 14 June 2023 18:04 UTC

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From: Martin Duke <>
Date: Wed, 14 Jun 2023 11:03:54 -0700
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To: IETF Secretariat <>
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Subject: Re: [tsvwg] The TSVWG WG has placed draft-kuhn-tsvwg-careful-resume in state "Call For Adoption By WG Issued"
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I am a bit confused by a 6/1 email with a 5/31 deadline, but I support
adoption, as an individual.

As AD, I confirm that this is in scope for TSVWG, though we may want to
discuss moving this work to CCWG if that is created.

In its current state, the Informational status is correct. However, this
will complicate referencing it in later standards. I'd like the WG to
consider tightening this up enough to be PS.


On Thu, Jun 1, 2023 at 6:05 AM IETF Secretariat <> wrote:

> The TSVWG WG has placed draft-kuhn-tsvwg-careful-resume in state
> Call For Adoption By WG Issued (entered by Gorry Fairhurst)
> The document is available at
> Comment:
> During IETF 116 we discussed draft-kuhn-tsvwg-careful-resume [1] and the
> sense in the room was strong support for adoption (29 people indicated they
> would support work on this topic, 1 was against).
> Abstract
>     This document specifies careful convergence of Congestion Control
>     (CC), providing a cautious method that enables fast startup for a
>     wide range of connections or reconnections.
>     The method reuses a set of computed CC parameters that are based on
>     the previously observed path characteristics between the same pair of
>     transport endpoints, such as the bottleneck bandwidth, available
>     capacity, or the RTT.  These parameters are stored, allowing them to
>     be later used to modify the CC behavior of a subsequent connection.
>     The document also discusses assumptions and defines requirements
>     around how a sender utilizes these parameters to provide
>     opportunities for a connection to more quickly get up to speed (i.e.
>     utilize the available capacity).  It discusses how these changes
>     impact the capacity at a shared network bottleneck and the safe
>     response that is needed after any indication that the new rate is
>     inappropriate.  The method is expected to be appropriate to IETF
>     transports.
> This is a formal adoption call that will run 2 weeks, ending on May 31st
> 2023
> at 23:59 anywhere on earth [2]. Please respond to this email thread with
> any
> comments indicating support or objection. In either case, elucidation of
> your
> opinion would be appreciated. This email is to confirm the adoption as a
> TSVWG work item and to ask if there are any other concerns or issues that
> the
> working group should consider.
> Best wishes,
> Gorry and Marten
> (tsvwg co-chairs)