CCNinfo: Discovering Content and Network Information in Content-Centric Networks
draft-irtf-icnrg-ccninfo-05

Document Type Active Internet-Draft (icnrg RG)
Authors Hitoshi Asaeda  , Atsushi Ooka  , Xun Shao 
Last updated 2020-09-21
Replaces draft-asaeda-icnrg-ccninfo
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ICN Research Group                                             H. Asaeda
Internet-Draft                                                   A. Ooka
Intended status: Experimental                                       NICT
Expires: March 25, 2021                                          X. Shao
                                          Kitami Institute of Technology
                                                      September 21, 2020

CCNinfo: Discovering Content and Network Information in Content-Centric
                                Networks
                      draft-irtf-icnrg-ccninfo-05

Abstract

   This document describes a mechanism named "CCNinfo" that discovers
   information about the network topology and in-network cache in
   Content-Centric Networks (CCN).  CCNinfo investigates: 1) the CCN
   routing path information per name prefix, 2) the Round-Trip Time
   (RTT) between the content forwarder and consumer, and 3) the states
   of in-network cache per name prefix.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on March 25, 2021.

Copyright Notice

   Copyright (c) 2020 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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Asaeda, et al.           Expires March 25, 2021                 [Page 1]
Internet-Draft                   CCNinfo                  September 2020

   to this document.  Code Components extracted from this document must
   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   7
     2.1.  Definitions . . . . . . . . . . . . . . . . . . . . . . .   8
   3.  CCNinfo Message Formats . . . . . . . . . . . . . . . . . . .   9
     3.1.  Request Message . . . . . . . . . . . . . . . . . . . . .  10
       3.1.1.  Request Header Block and Request Block  . . . . . . .  12
       3.1.2.  Report Block TLV  . . . . . . . . . . . . . . . . . .  16
       3.1.3.  Content Name Specification  . . . . . . . . . . . . .  17
     3.2.  Reply Message . . . . . . . . . . . . . . . . . . . . . .  17
       3.2.1.  Reply Block TLV . . . . . . . . . . . . . . . . . . .  18
         3.2.1.1.  Reply Sub-Block TLV . . . . . . . . . . . . . . .  19
   4.  CCNinfo User Behavior . . . . . . . . . . . . . . . . . . . .  22
     4.1.  Sending CCNinfo Request . . . . . . . . . . . . . . . . .  22
       4.1.1.  Routing Path Information  . . . . . . . . . . . . . .  22
       4.1.2.  In-Network Cache Information  . . . . . . . . . . . .  22
     4.2.  Receiving CCNinfo Reply . . . . . . . . . . . . . . . . .  23
   5.  Router Behavior . . . . . . . . . . . . . . . . . . . . . . .  23
     5.1.  User and Neighbor Verification  . . . . . . . . . . . . .  23
     5.2.  Receiving CCNinfo Request . . . . . . . . . . . . . . . .  23
     5.3.  Forwarding CCNinfo Request  . . . . . . . . . . . . . . .  25
       5.3.1.  Regular Request . . . . . . . . . . . . . . . . . . .  25
       5.3.2.  Full Discovery Request  . . . . . . . . . . . . . . .  25
     5.4.  Sending CCNinfo Reply . . . . . . . . . . . . . . . . . .  26
     5.5.  Forwarding CCNinfo Reply  . . . . . . . . . . . . . . . .  27
   6.  CCNinfo Termination . . . . . . . . . . . . . . . . . . . . .  27
     6.1.  Arriving at First-hop Router  . . . . . . . . . . . . . .  28
     6.2.  Arriving at Router Having Cache . . . . . . . . . . . . .  28
     6.3.  Arriving at Last Router . . . . . . . . . . . . . . . . .  28
     6.4.  Invalid Request . . . . . . . . . . . . . . . . . . . . .  28
     6.5.  No Route  . . . . . . . . . . . . . . . . . . . . . . . .  28
     6.6.  No Information  . . . . . . . . . . . . . . . . . . . . .  28
     6.7.  No Space  . . . . . . . . . . . . . . . . . . . . . . . .  28
     6.8.  Fatal Error . . . . . . . . . . . . . . . . . . . . . . .  29
     6.9.  CCNinfo Reply Timeout . . . . . . . . . . . . . . . . . .  29
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