Content Delivery Network Interconnection (CDNI) Request Routing: Footprint and Capabilities Semantics
RFC 8008

Document Type RFC - Proposed Standard (December 2016; No errata)
Last updated 2016-12-13
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Stream WG state Submitted to IESG for Publication
Document shepherd Francois Le Faucheur
Shepherd write-up Show (last changed 2016-03-04)
IESG IESG state RFC 8008 (Proposed Standard)
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Responsible AD Alexey Melnikov
Send notices to "Francois Le Faucheur" <flefauch@cisco.com>
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Internet Engineering Task Force (IETF)                        J. Seedorf
Request for Comments: 8008     HFT Stuttgart - Univ. of Applied Sciences
Category: Standards Track                                    J. Peterson
ISSN: 2070-1721                                                  Neustar
                                                              S. Previdi
                                                                   Cisco
                                                      R. van Brandenburg
                                                                     TNO
                                                                   K. Ma
                                                                Ericsson
                                                           December 2016

    Content Delivery Network Interconnection (CDNI) Request Routing:
                  Footprint and Capabilities Semantics

Abstract

   This document captures the semantics of the "Footprint and
   Capabilities Advertisement" part of the Content Delivery Network
   Interconnection (CDNI) Request Routing interface, i.e., the desired
   meaning of "Footprint" and "Capabilities" in the CDNI context and
   what the "Footprint & Capabilities Advertisement interface (FCI)"
   offers within CDNI.  The document also provides guidelines for the
   CDNI FCI protocol.  It further defines a Base Advertisement Object,
   the necessary registries for capabilities and footprints, and
   guidelines on how these registries can be extended in the future.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc8008.

Seedorf, et al.              Standards Track                    [Page 1]
RFC 8008        CDNI RR Footprint/Capabilities Semantics   December 2016

Copyright Notice

   Copyright (c) 2016 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
   (http://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
   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.

Seedorf, et al.              Standards Track                    [Page 2]
RFC 8008        CDNI RR Footprint/Capabilities Semantics   December 2016

Table of Contents

   1. Introduction and Scope ..........................................4
      1.1. Terminology ................................................5
   2. Design Decisions for Footprint and Capabilities .................6
      2.1. Advertising Limited Coverage ...............................6
      2.2. Capabilities and Dynamic Data ..............................7
      2.3. Advertisement versus Queries ...............................8
      2.4. Avoiding or Handling "Cheating" dCDNs ......................8
   3. Focusing on Capabilities with Footprint Restrictions ............9
   4. Footprint and Capabilities Extension ............................9
   5. Capability Advertisement Object ................................11
      5.1. Base Advertisement Object .................................12
      5.2. Encoding ..................................................12
      5.3. Delivery Protocol Capability Object .......................13
           5.3.1. Delivery Protocol Capability Object Serialization ..13
      5.4. Acquisition Protocol Capability Object ....................14
           5.4.1. Acquisition Protocol Capability Object
                  Serialization ......................................14
      5.5. Redirection Mode Capability Object ........................15
           5.5.1. Redirection Mode Capability Object Serialization ...15
      5.6. CDNI Logging Capability Object ............................16
           5.6.1. CDNI Logging Capability Object Serialization .......17
      5.7. CDNI Metadata Capability Object ...........................18
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