On Nov 4, 2013, at 2:03 PM, Bob Briscoe <bob.bris...@bt.com> wrote: > Folks, > > Pls respond if you support this being adopted as a work-group item in the > IETF transport services w-g (tsvwg). The WG chairs need visibility of > interest.
And don't respond if we don't support it? :-) I have a very basic question. For IP/IP tunnels, such as GRE, the ECN flags are defined, and I would imagine that RFC 2983 could be interpreted as saying what one does with flags (when you move the TOS octet, move 8 bits, whether in->out or out->in). For non-IP tunnels, with the exception of MPLS, the IETF doesn't define the header. How does one add ECN to a protocol we don't maintain? If we maintain it, are we already done? > Even better, if you're willing to read / comment / review / implement > > Guidelines for Adding Congestion Notification to Protocols that Encapsulate IP > <http://tools.ietf.org/html/draft-briscoe-tsvwg-ecn-encap-guidelines> > > Abstract > > The purpose of this document is to guide the design of congestion > notification in any lower layer or tunnelling protocol that > encapsulates IP. The aim is for explicit congestion signals to > propagate consistently from lower layer protocols into IP. Then the > IP internetwork layer can act as a portability layer to carry > congestion notification from non-IP-aware congested nodes up to the > transport layer (L4). Following these guidelines should assure > interworking between new lower layer congestion notification > mechanisms, whether specified by the IETF or other standards bodies. > > > [Cross-posting tsvwg & aqm, just in case] > > > Bob Briscoe, > also for co-authors Pat Thaler and John Kaippallimalil > > > ________________________________________________________________ > Bob Briscoe, BT > _______________________________________________ > aqm mailing list > aqm@ietf.org > https://www.ietf.org/mailman/listinfo/aqm ------------------------------------------------------ 8 issues in virtual infrastructure http://dcrocker.net/#fallacies
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