ICN "Begin-End" Hop by Hop Fragmentation
draft-mosko-icnrg-beginendfragment-02

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ICNRG                                                           M. Mosko
Internet-Draft                                                      PARC
Intended status: Experimental                                C. Tschudin
Expires: June 16, 2017                               University of Basel
                                                       December 13, 2016

                ICN "Begin-End" Hop by Hop Fragmentation
                 draft-mosko-icnrg-beginendfragment-02

Abstract

   This document describes a simple hop-by-hop fragmentation scheme for
   ICN and mappings to the CCNx 1.0 and NDN packet formats, called
   "begin-end fragmentation".  This scheme may be used at Layer 3 when
   ICN packets are used natively over a Layer 2 media which does not
   reorder packets.

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   This Internet-Draft will expire on June 16, 2017.

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   Copyright (c) 2016 IETF Trust and the persons identified as the
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
   2.  Abstract Description of the Begin-End-Fragment Protocol  . . .  5
     2.1.  Initialization . . . . . . . . . . . . . . . . . . . . . .  6
       2.1.1.  Examples . . . . . . . . . . . . . . . . . . . . . . . 11
     2.2.  Sender Protocol  . . . . . . . . . . . . . . . . . . . . . 12
     2.3.  Receiver Protocol  . . . . . . . . . . . . . . . . . . . . 12
   3.  Ethernet as a common use case  . . . . . . . . . . . . . . . . 14
   4.  CCNx 1.0 Fragment Protocol Description . . . . . . . . . . . . 15
     4.1.  Initialization examples  . . . . . . . . . . . . . . . . . 17
     4.2.  Example  . . . . . . . . . . . . . . . . . . . . . . . . . 19
     4.3.  CCNx 1.0 Frame Packing . . . . . . . . . . . . . . . . . . 22
   5.  NDN Fragment Protocol Description  . . . . . . . . . . . . . . 24
     5.1.  Example  . . . . . . . . . . . . . . . . . . . . . . . . . 25
     5.2.  NDN Frame Packing  . . . . . . . . . . . . . . . . . . . . 25
     5.3.  Assigned Numbers for NDN Begin-End fragmentation . . . . . 25
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 26
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 27
     7.1.  CCNx Packet Type Registry  . . . . . . . . . . . . . . . . 27
     7.2.  CCNx Message Registry  . . . . . . . . . . . . . . . . . . 27
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 28
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 29
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 29
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 29
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 31

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1.  Introduction

   In the past, there were two known hop-by-hop fragmentation schemes
   for ICN packets: The one described in NDNLP [NDNLP] as "indexed
   fragmentation" and the one implemented in CCN-lite [CCNLite], using
   the old ccnb encoding.  In a first part, this document describes a
   third, hop-by-hop fragmentation protocol in an encoding-neutral way.
   In a second part, we show mappings of this "begin-end fragmentation
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