Considerations in the development of a QoS Architecture for CCNx-like ICN protocols
draft-oran-icnrg-qosarch-02

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ICNRG                                                            D. Oran
Internet-Draft                       Network Systems Research and Design
Intended status: Informational                          October 12, 2019
Expires: April 14, 2020

 Considerations in the development of a QoS Architecture for CCNx-like
                             ICN protocols
                      draft-oran-icnrg-qosarch-02

Abstract

   This is a position paper.  It documents the author's personal views
   on how Quality of Service (QoS) capabilities ought to be accommodated
   in ICN protocols like CCNx or NDN which employ flow-balanced
   Interest/Data exchanges and hop-by-hop forwarding state as their
   fundamental machinery.  It argues that such protocols demand a
   substantially different approach to QoS from that taken in TCP/IP,
   and proposes specific design patterns to achieve both classification
   and differentiated QoS treatment on both a flow and aggregate basis.
   It also considers the effect of caches as a resource in addition to
   memory, CPU and link bandwidth that should be subject to explicitly
   unfair resource allocation.  The proposed methods are intended to
   operate purely at the network layer, providing the primitives needed
   to achieve both transport and higher layer QoS objectives.  It
   explicitly excludes any discussion of Quality of Experience (QoE)
   which can only be assessed and controlled at the application layer or
   above.

Status of This Memo

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   This Internet-Draft will expire on April 14, 2020.

D. Oran                  Expires April 14, 2020                 [Page 1]
Internet-Draft            ICN QoS Architecture              October 2019

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Some background on the nature and properties of Quality of
       Service in network protocols  . . . . . . . . . . . . . . . .   4
     3.1.  Congestion Control basics relevant to ICN . . . . . . . .   5
   4.  What can we control to achieve QoS in ICN?  . . . . . . . . .   6
   5.  How does this relate to QoS in TCP/IP?  . . . . . . . . . . .   8
   6.  Why is ICN Different? Can we do Better? . . . . . . . . . . .   9
     6.1.  Equivalence class capabilities  . . . . . . . . . . . . .   9
     6.2.  Topology interactions with QoS  . . . . . . . . . . . . .  10
     6.3.  Specification of QoS treatments . . . . . . . . . . . . .  10
     6.4.  ICN forwarding semantics effect on QoS  . . . . . . . . .  11
     6.5.  QoS interactions with Caching . . . . . . . . . . . . . .  11
   7.  A strawman set of principles to guide QoS architecture for
       ICN . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     10.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  24

1.  Introduction

   The TCP/IP protocol suite used on today's Internet has over 30 years
   of accumulated research and engineering into the provision of Quality
   of Service machinery, employed with varying success in different
   environments.  ICN protocols like Named Data Networking (NDN [NDN])
   and Content-Centric Networking (CCNx [RFC8569],[RFC8609]) have an
   accumulated 10 years of research and very little deployment.  We