Re: [tcpm] Rechartering TCPM for alternative congestion control algorithms

Hi Joe,

The current TCPM charter very explicitly includes "incremental enhancements of TCP's standard congestion control". RFC 5681 is a TCPM document.

Are you suggesting that *all* documents dealing with TCP congestion control should be moved from TCPM to TSVWG, including e.g. potential future updates of RFC 5681?

I guess this would result in a major re-chartering both of TCPM and TSVWG. And it could be a slippery road. A lot of TCPM documents affect congestion control at least partly.

Thanks

Michael

> -----Original Message-----
> From: Joe Touch [mailto:touch@isi.edu]
> Sent: Tuesday, January 27, 2015 4:34 PM
> To: Scharf, Michael (Michael); tcpm@ietf.org
> Cc: tcpm-chairs@tools.ietf.org
> Subject: Re: [tcpm] Rechartering TCPM for alternative congestion
> control algorithms
> 
> Hi, all,
> 
> I disagree; TCP congestion control algorithms are also deployed in
> other
> transports, and thus this seems more appropriate for TSVWG.
> 
> Joe
> 
> On 1/27/2015 2:21 AM, Scharf, Michael (Michael) wrote:
> > Hi,
> >
> > This e-mails asks for community feedback on a suggested small addon
> to the TCPM charter [1].
> >
> > In the last TCPM meeting [2] there was strong support for adopting a
> document describing the CUBIC congestion control algorithm [3]. To the
> chairs, it is not entirely obvious whether this document, or possibly
> other similar documents, would indeed be in scope of the current TCPM
> charter. Given the importance of the TCP congestion control, we prefer
> a community consensus explicitly documented in the charter instead of
> ambiguity.
> >
> > The current charter limits the scope of TCPM to "modest changes to
> the protocol, algorithms, and interfaces". It allows "incremental
> enhancements of TCP's standard congestion control" but explicitly
> mandates rechartering for fundamental changes [1]:
> >
> > OLD:
> >
> > TCPM also provides a venue for standardization of incremental
> > enhancements of TCP's standard congestion control, but such changes
> > may require additional review by the IRTF Congestion Control
> > Research Group (ICCRG). Fundamental changes to TCP or its congestion
> > control algorithms (e.g., departure from loss-based congestion
> > control) will be handled by other working groups or will require
> > rechartering.
> >
> > We suggest to update this paragraph in the TCPM charter by an
> explicit statement that "TCPM may document alternative congestion
> control algorithms that are known to be widely deployed, and that are
> considered safe for large-scale deployment in the Internet":
> >
> > NEW:
> >
> > TCPM also provides a venue for standardization of incremental
> > enhancements of TCP's standard congestion control. In addition,
> > TCPM may document alternative congestion control algorithms
> > that are known to be widely deployed, and that are considered
> > safe for large-scale deployment in the Internet. Changes of
> algorithms
> > may require additional review by the IRTF Congestion Control
> > Research Group (ICCRG). Fundamental changes to TCP or its congestion
> > control algorithms (e.g., departure from loss-based congestion
> > control) will be handled by other working groups or will require
> > rechartering.
> >
> > In our reading, "TCP's standard congestion control" is currently
> defined by RFC 5681.
> >
> > This e-mail and the suggested rechartering does not imply any
> adoption of one or more alternative congestion control algorithms.
> >
> > Any feedback regarding this suggested rechartering would be very
> welcome. In particular, please let us know if there are any concerns
> with this proposal or if you have suggestions for a different wording.
> Please let us know any thoughts until Feb. 15, 2015.
> >
> > Thanks a lot!
> >
> > Michael, Pasi, Yoshifumi
> >
> >
> > [1] https://datatracker.ietf.org/wg/tcpm/charter/
> >
> > [2] http://www.ietf.org/proceedings/91/minutes/minutes-91-tcpm
> >
> > [3] https://datatracker.ietf.org/doc/draft-zimmermann-tcpm-cubic/
> >
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> >