I-D Action: draft-ietf-tsvwg-ecn-l4s-id-29.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Transport Area Working Group WG of the IETF.

        Title           : Explicit Congestion Notification (ECN) Protocol for Very Low Queuing Delay (L4S)
        Authors         : Koen De Schepper
                          Bob Briscoe
  Filename        : draft-ietf-tsvwg-ecn-l4s-id-29.txt
  Pages           : 67
  Date            : 2022-08-29

Abstract:
   This specification defines the protocol to be used for a new network
   service called low latency, low loss and scalable throughput (L4S).
   L4S uses an Explicit Congestion Notification (ECN) scheme at the IP
   layer that is similar to the original (or 'Classic') ECN approach,
   except as specified within.  L4S uses 'scalable' congestion control,
   which induces much more frequent control signals from the network and
   it responds to them with much more fine-grained adjustments, so that
   very low (typically sub-millisecond on average) and consistently low
   queuing delay becomes possible for L4S traffic without compromising
   link utilization.  Thus even capacity-seeking (TCP-like) traffic can
   have high bandwidth and very low delay at the same time, even during
   periods of high traffic load.

   The L4S identifier defined in this document distinguishes L4S from
   'Classic' (e.g. TCP-Reno-friendly) traffic.  Then, network
   bottlenecks can be incrementally modified to distinguish and isolate
   existing traffic that still follows the Classic behaviour, to prevent
   it degrading the low queuing delay and low loss of L4S traffic.  This
   experimental track specification defines the rules that L4S
   transports and network elements need to follow, with the intention
   that L4S flows neither harm each other's performance nor that of
   Classic traffic.  It also suggests open questions to be investigated
   during experimentation.  Examples of new active queue management
   (AQM) marking algorithms and examples of new transports (whether TCP-
   like or real-time) are specified separately.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-tsvwg-ecn-l4s-id/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-tsvwg-ecn-l4s-id-29.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-ecn-l4s-id-29


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