Circuit Breaker Assisted Congestion Control (CBACC): Protocol Specification
draft-jholland-cb-assisted-cc-01

Document Type Active Internet-Draft (individual)
Last updated 2017-04-23
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Transport Area Working Group                                  J. Holland
Internet-Draft                                 Akamai Technologies, Inc.
Intended status: Experimental                             April 21, 2017
Expires: October 23, 2017

     Circuit Breaker Assisted Congestion Control (CBACC): Protocol
                             Specification
                    draft-jholland-cb-assisted-cc-01

Abstract

   This document specifies Circuit Breaker Assisted Congestion Control
   (CBACC), which provides bandwidth information from senders to
   intermediate network nodes to enable good decisions for fast-trip
   Network Transport Circuit Breaker activity
   ([I-D.ietf-tsvwg-circuit-breaker]) when necessary for network health.
   CBACC is specifically designed to support protocols using IP
   multicast, particularly as a supplement to receiver-driven congestion
   control protocols to help affected networks rapidly detect and
   mitigate the impact of scenarios in which a network is oversubscribed
   to flows which are not responsive to congestion.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on October 23, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

Holland                 Expires October 23, 2017                [Page 1]
Internet-Draft        CBACC: Protocol Specification           April 2017

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Rationale . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  Protocol Specification  . . . . . . . . . . . . . . . . . . .   5
     5.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  Packet Header Fields  . . . . . . . . . . . . . . . . . .   6
       5.2.1.  Bandwidth Advertisement . . . . . . . . . . . . . . .   6
         5.2.1.1.  As an IP header option  . . . . . . . . . . . . .   6
         5.2.1.2.  Field definitions . . . . . . . . . . . . . . . .   7
     5.3.  States  . . . . . . . . . . . . . . . . . . . . . . . . .   8
       5.3.1.  Interface State . . . . . . . . . . . . . . . . . . .   8
       5.3.2.  Flow State  . . . . . . . . . . . . . . . . . . . . .   9
     5.4.  Functionality . . . . . . . . . . . . . . . . . . . . . .  10
   6.  Requirements from other building blocks . . . . . . . . . . .  12
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
     8.1.  Forged Packets  . . . . . . . . . . . . . . . . . . . . .  13
     8.2.  Overloading of Slow Paths . . . . . . . . . . . . . . . .  14
     8.3.  Overloading of State  . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     10.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Appendix A.  Overjoining  . . . . . . . . . . . . . . . . . . . .  18
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   This document specifies Circuit Breaker Assisted Congestion Control
   (CBACC).

   CBACC is a congestion control building block designed for use with IP
   traffic that has a known maximum bandwidth, which does not reduce its
   sending rate in response to congestion.  CBACC is specifically
Show full document text