Circuit Breaker Assisted Congestion Control
draft-jholland-mboned-cbacc-00

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Mboned                                                        J. Holland
Internet-Draft                                 Akamai Technologies, Inc.
Intended status: Standards Track                      September 26, 2019
Expires: March 29, 2020

              Circuit Breaker Assisted Congestion Control
                     draft-jholland-mboned-cbacc-00

Abstract

   This document specifies Circuit Breaker Assisted Congestion Control
   (CBACC).  CBACC enables fast-trip Circuit Breakers by publishing rate
   metadata about multicast channels from senders to intermediate
   network nodes or receivers.  The circuit breaker behavior is defined
   as a supplement to receiver driven congestion control systems, to
   preserve network health if receivers subscribe to a volume of traffic
   that exceeds capacity policies or capability for a network or
   receiver.

Status of This Memo

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   This Internet-Draft will expire on March 29, 2020.

Copyright Notice

   Copyright (c) 2019 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
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   (https://trustee.ietf.org/license-info) in effect on the date of
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Holland                  Expires March 29, 2020                 [Page 1]
Internet-Draft                    CBACC                   September 2019

   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
     1.1.  Background and Terminology  . . . . . . . . . . . . . . .   3
   2.  Circuit Breaker Behavior  . . . . . . . . . . . . . . . . . .   4
     2.1.  Functional Components . . . . . . . . . . . . . . . . . .   4
       2.1.1.  Ingress Meter . . . . . . . . . . . . . . . . . . . .   4
       2.1.2.  Egress Meter  . . . . . . . . . . . . . . . . . . . .   4
       2.1.3.  Communication Method  . . . . . . . . . . . . . . . .   5
       2.1.4.  Measurement Function  . . . . . . . . . . . . . . . .   5
       2.1.5.  Trigger Function  . . . . . . . . . . . . . . . . . .   6
       2.1.6.  Reaction  . . . . . . . . . . . . . . . . . . . . . .   7
       2.1.7.  Feedback Control Mechanism  . . . . . . . . . . . . .   7
     2.2.  States  . . . . . . . . . . . . . . . . . . . . . . . . .   7
       2.2.1.  Interface State . . . . . . . . . . . . . . . . . . .   7
       2.2.2.  Flow State  . . . . . . . . . . . . . . . . . . . . .   8
     2.3.  Implementation Design Considerations  . . . . . . . . . .   8
       2.3.1.  Oversubscription Thresholds . . . . . . . . . . . . .   8
       2.3.2.  Fairness Functions  . . . . . . . . . . . . . . . . .   9
   3.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Tree Diagram  . . . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Module  . . . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  YANG Module Names Registry  . . . . . . . . . . . . . . .  11
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
     5.1.  Metadata Security . . . . . . . . . . . . . . . . . . . .  11
     5.2.  Denial of Service . . . . . . . . . . . . . . . . . . . .  11
       5.2.1.  State Overload  . . . . . . . . . . . . . . . . . . .  11
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Appendix A.  Overjoining  . . . . . . . . . . . . . . . . . . . .  14
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   This document defines Circuit Breaker Assisted Congestion Control
   (CBACC).  CBACC defines a Network Transport Circuit Breaker (CB), as
   described by [RFC8084].

   The CB behavior defined in this document uses bit-rate metadata about
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