Reflexive Forwarding for CCNx and NDN Protocols
draft-oran-icnrg-reflexive-forwarding-01

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ICNRG                                                            D. Oran
Internet-Draft                       Network Systems Research and Design
Updates: 8569, 8609 (if approved)                            D. Kutscher
Intended status: Experimental  University of Applied Sciences Emden/Leer
Expires: 19 October 2020                                   17 April 2020

            Reflexive Forwarding for CCNx and NDN Protocols
                draft-oran-icnrg-reflexive-forwarding-01

Abstract

   Current Information-Centric Networking protocols such as CCNx and NDN
   have a wide range of useful applications in content retrieval and
   other scenarios that depend only on a robust two-way exchange in the
   form of a request and response (represented by an _Interest-Data
   exchange_ in the case of the two protocols noted above).  A number of
   important applications however, require placing large amounts of data
   in the Interest message, and/or more than one two-way handshake.
   While these can be accomplished using independent Interest-Data
   exchanges by reversing the roles of consumer and producer, such
   approaches can be both clumsy for applications and problematic from a
   state management, congestion control, or security standpoint.  This
   specification proposes a _Reflexive Forwarding_ extension to the CCNx
   and NDN protocol architectures that eliminates the problems inherent
   in using independent Interest-Data exchanges for such applications.
   It updates RFC8569 and RFC8609.

Status of This Memo

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

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   This Internet-Draft will expire on 19 October 2020.

Oran & Kutscher          Expires 19 October 2020                [Page 1]
Internet-Draft          ICN Reflexive Forwarding              April 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Problems with pushing data  . . . . . . . . . . . . . . .   4
     1.2.  Problems with utilizing independent exchanges . . . . . .   5
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   6
   3.  Overview of the Reflexive Forwarding design . . . . . . . . .   6
   4.  Naming of Reflexive Interests . . . . . . . . . . . . . . . .  11
   5.  Forwarder operation for Reflexive Interests . . . . . . . . .  12
   6.  State coupling between producer and consumer  . . . . . . . .  13
   7.  Use cases for Reflexive Interests . . . . . . . . . . . . . .  13
     7.1.  Achieving Remote Method Invocation with Reflexive
           Interests . . . . . . . . . . . . . . . . . . . . . . . .  13
     7.2.  RESTful Web Interactions  . . . . . . . . . . . . . . . .  16
     7.3.  Achieving simple data pull from consumers with reflexive
           Interests . . . . . . . . . . . . . . . . . . . . . . . .  16
   8.  Implementation Considerations . . . . . . . . . . . . . . . .  20
     8.1.  Forwarder implementation considerations . . . . . . . . .  20
       8.1.1.  Forwarding Information Base (FIB) . . . . . . . . . .  20
       8.1.2.  Interactions with Input Processing of Interest and Data
               packets . . . . . . . . . . . . . . . . . . . . . . .  21
       8.1.3.  Interactions with Interest Lifetime . . . . . . . . .  22
       8.1.4.  Interactions with Interest aggregation and multi-path/
               multi-destination forwarding  . . . . . . . . . . . .  23
     8.2.  Consumer Implementation Considerations  . . . . . . . . .  24
       8.2.1.  Data objects returned by the consumer to reflexive name
               Interests arriving from a producer  . . . . . . . . .  24
       8.2.2.  Terminating unwanted reflexive Interest exchanges . .  25
       8.2.3.  Interactions with caching . . . . . . . . . . . . . .  25
     8.3.  Producer Implementation Considerations  . . . . . . . . .  25
   9.  Operational Considerations  . . . . . . . . . . . . . . . . .  25
   10. Mapping to CCNx and NDN packet encodings  . . . . . . . . . .  26