Path Steering in CCNx and NDN
draft-oran-icnrg-pathsteering-01

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ICNRG                                                       I. Moiseenko
Internet-Draft                                                      UCLA
Intended status: Experimental                                    D. Oran
Expires: 25 October 2020             Network Systems Research and Design
                                                           23 April 2020

                     Path Steering in CCNx and NDN
                    draft-oran-icnrg-pathsteering-01

Abstract

   Path Steering is a mechanism to discover paths to the producers of
   ICN content objects and steer subsequent Interest messages along a
   previously discovered path.  It has various uses, including the
   operation of state-of-the-art multipath congestion control algorithms
   and for network measurement and management.  This specification
   derives directly from the design published in _Path Switching in
   Content Centric and Named Data Networks_ (4th ACM Conference on
   Information-Centric Networking - ICN'17) and therefore does not
   recapitulate the design motivations, implementation details, or
   evaluation of the scheme.  Some technical details are different
   however, and where there are differences, the design documented here
   is to be considered definitive.

Status of This Memo

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   This Internet-Draft will expire on 25 October 2020.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Moiseenko & Oran         Expires 25 October 2020                [Page 1]
Internet-Draft              ICN Path Steering                 April 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Essential elements of ICN path discovery and path steering  .   4
     2.1.  Path Discovery  . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Path Steering . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  Handling Path Steering errors . . . . . . . . . . . . . .   6
     2.4.  How to represent the Path Label . . . . . . . . . . . . .   6
   3.  Mapping to CCNx and NDN packet encodings  . . . . . . . . . .   7
     3.1.  Path label TLV  . . . . . . . . . . . . . . . . . . . . .   7
     3.2.  Path label encoding for CCNx  . . . . . . . . . . . . . .   9
     3.3.  Path label encoding for NDN . . . . . . . . . . . . . . .   9
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
     5.1.  Cryptographic protection of a path label  . . . . . . . .  12
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   Path Steering is a mechanism to discover paths to the producers of
   ICN content objects and steer subsequent Interest messages along a
   previously discovered path.  It has various uses, including the
   operation of state-of-the-art multipath congestion control algorithms
   and for network measurement and management.  This specification
   derives directly from the design published in [Moiseenko2017] and
   therefore does not recapitulate the design motivations,
   implementation details, or evaluation of the scheme.  That
   publication should be considered a normative reference as it is not
   likely a reader will be able to understand all elements of this
   design without first having read the reference.  Some technical
   details are different however, and where there are differences, the
   design documented here is to be considered definitive.

   There are a number of important use cases to justify extending ICN
   architectures such as CCNx [RFC8569] or [NDN] to provide these
   capabilities.  These are summarized as follows:
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