CDNI Request Routing Extensions
draft-ietf-cdni-request-routing-extensions-00

Document Type Active Internet-Draft (cdni WG)
Last updated 2018-10-17
Replaces draft-finkelman-cdni-rr-sva-extensions
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Network Working Group                                       O. Finkelman
Internet-Draft                                                     Qwilt
Intended status: Standards Track                               S. Mishra
Expires: April 20, 2019                                          Verizon
                                                        October 17, 2018

                    CDNI Request Routing Extensions
             draft-ietf-cdni-request-routing-extensions-00

Abstract

   The Open Caching working group of the Streaming Video Alliance is
   focused on the delegation of video delivery requests from commercial
   CDNs to a caching layer at the ISP.  In that aspect, Open Caching is
   a specific use case of CDNI, where the commercial CDN is the upstream
   CDN (uCDN) and the ISP caching layer is the downstream CDN (dCDN).
   The extensions specified in this document to the CDNI Metadata and
   FCI interfaces are derived from requirements raised by Open Caching
   but are applicable to CDNI use cases in general.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 20, 2019.

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Copyright Notice

   Copyright (c) 2018 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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Redirect Target Address Capability Object . . . . . . . . . .   3
     2.1.  DnsTarget . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  HttpTarget  . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Fallback Target Address Metadata  . . . . . . . . . . . . . .   7
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  CDNI Payload Types  . . . . . . . . . . . . . . . . . . .   9
       4.1.1.  CDNI FCI RedirectTarget Payload Type  . . . . . . . .   9
       4.1.2.  CDNI MI FallbackTarget Payload Type . . . . . . . . .   9
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document defines objects needed for Open Caching request
   routing.  For that purpose it extends CDNI metadata [RFC8006] and
   CDNI Footprint and Capabilities [RFC8008].  For consistency, this
   document follows the CDNI notation of uCDN (the commercial CDN) and
   dCDN (the ISP caching layer).

   This document also registers CDNI Payload Types [RFC7736] for the
   defined objects:

   o  Redirect Target Capability (for dCDN advertising redirect target
      address)

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   o  Fallback Target Metadata (for uCDN configuring fallback target
      address)

1.1.  Terminology

   This document reuses the terminology defined in [RFC6707], [RFC8006],
   [RFC8007], and [RFC8008].

   Additionally, the following terms are used throughout this document
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