Re-ECN: A Framework for adding Congestion Accountability to TCP/IP

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Publisher: IETF
Doc Type: Standard
Abstract: This document describes a framework for using a new protocol called re-ECN (re-inserted explicit congestion notification), which can be deployed incrementally around unmodified routers. Re-ECN allows accurate congestion monitoring throughout the network thus enabling the upstream party at any trust boundary in the internetwork to be held responsible for the congestion they cause, or allow to be caused. So, networks can introduce straightforward accountability for congestion and policing mechanisms for incoming traffic from end-customers or from neighbouring network domains. As well as giving the motivation for re-ECN this document also gives examples of mechanisms that can use the protocol to ensure data sources respond correctly to congestion. And it describes example mechanisms that ensure the dominant selfish strategy of both network domains and end-points will be to use the protocol honestly. Note concerning Intended Status: If this draft were ever published as an RFC it would probably have historic status. There is limited space in the IP header, so re-ECN had to compromise by requiring the receiver to be ECN-enabled otherwise the sender could not use re-ECN. Re-ECN was a precursor to chartering of the IETF's Congestion Exposure (ConEx) working group, but during chartering there were still too few ECN receivers enabled, therefore it was decided to pursue other compromises in order to fit a similar capability into the IP header.
Publication Date: 2014-03-11
Status Note: Internet-Draft
Link: https://datatracker.ietf.org/doc/html/draft-briscoe-conex-re-ecn-motiv-03/
Author(s): Bob Briscoe
Arnaud Jacquet
Toby Moncaster
Alan Smith
Keyword(s): Quality Of Service, QoS, Congestion Control, DiffServ, Integrated Services, Admission Control, Protocol, Preemption

Bibliographic Reference(s)

IETF.draft-briscoe-conex-re-ecn-tcp-03 — Re-ECN: Adding Accountability for Causing Congestion to TCP/IP EXTERNAL
IETF.draft-briscoe-re-pcn-border-cheat-03 — Emulating Border Flow Policing using Re-PCN on Bulk Data EXTERNAL
IETF.draft-briscoe-tsvwg-relax-fairness-01 — Problem Statement: Transport Protocols Don't Have To Do Fairness EXTERNAL

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IETF draft-briscoe-conex-re-ecn-motiv-03, Re-ECN: A Framework for adding Congestion Accountability to TCP/IP. Available at https://datatracker.ietf.org/doc/html/draft-briscoe-conex-re-ecn-motiv-03/

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IETF draft-briscoe-conex-re-ecn-motiv-03, Re-ECN: A Framework for adding
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IETF draft-briscoe-conex-re-ecn-motiv-03, Re-ECN: A Framework for adding Congestion Accountability to TCP/IP. Available at https://datatracker.ietf.org/doc/html/draft-briscoe-conex-re-ecn-motiv-03/

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Referenced By

IETF draft-briscoe-conex-re-ecn-tcp-04 [Active*]
IETF RFC 7713 [Active*]