datatracker.ietf.org
Sign in
Version 5.7.1.p2, 2014-10-29
Report a bug

Framework for Content Distribution Network Interconnection (CDNI)
RFC 7336

Document type: RFC - Informational (August 2014; No errata)
Obsoletes RFC 3466
Document stream: IETF
Last updated: 2014-08-12
Other versions: plain text, pdf, html

IETF State: Submitted to IESG for Publication
Consensus: Unknown
Document shepherd: Daryl Malas
Shepherd Write-Up: Last changed 2014-01-30

IESG State: RFC 7336 (Informational)
IANA Action State: No IC
Responsible AD: Spencer Dawkins
Send notices to: cdni-chairs@tools.ietf.org, draft-ietf-cdni-framework@tools.ietf.org

Internet Engineering Task Force (IETF)                       L. Peterson
Request for Comments: 7336                     Akamai Technologies, Inc.
Obsoletes: 3466                                                 B. Davie
Category: Informational                                     VMware, Inc.
ISSN: 2070-1721                                  R. van Brandenburg, Ed.
                                                                     TNO
                                                             August 2014

   Framework for Content Distribution Network Interconnection (CDNI)

Abstract

   This document presents a framework for Content Distribution Network
   Interconnection (CDNI).  The purpose of the framework is to provide
   an overall picture of the problem space of CDNI and to describe the
   relationships among the various components necessary to interconnect
   CDNs.  CDNI requires the specification of interfaces and mechanisms
   to address issues such as request routing, distribution metadata
   exchange, and logging information exchange across CDNs.  The intent
   of this document is to outline what each interface needs to
   accomplish and to describe how these interfaces and mechanisms fit
   together, while leaving their detailed specification to other
   documents.  This document, in combination with RFC 6707, obsoletes
   RFC 3466.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   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/rfc7336.

Peterson, et al.              Informational                     [Page 1]
RFC 7336                     CDNI Framework                  August 2014

Copyright Notice

   Copyright (c) 2014 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.

Peterson, et al.              Informational                     [Page 2]
RFC 7336                     CDNI Framework                  August 2014

Table of Contents

   1. Introduction ....................................................4
      1.1. Terminology ................................................4
      1.2. Reference Model ............................................6
      1.3. Structure of This Document ................................10
   2. Building Blocks ................................................10
      2.1. Request Redirection .......................................10
           2.1.1. DNS Redirection ....................................10
           2.1.2. HTTP Redirection ...................................12
   3. Overview of CDNI Operation .....................................12
      3.1. Preliminaries .............................................14
      3.2. Iterative HTTP Redirect Example ...........................15
      3.3. Recursive HTTP Redirection Example ........................21
      3.4. Iterative DNS-Based Redirection Example ...................25
           3.4.1. Notes on Using DNSSEC ..............................28
      3.5. Dynamic Footprint Discovery Example .......................29
      3.6. Content Removal Example ...................................31
      3.7. Pre-positioned Content Acquisition Example ................32
      3.8. Asynchronous CDNI Metadata Example ........................33
      3.9. Synchronous CDNI Metadata Acquisition Example .............35
      3.10. Content and Metadata Acquisition with Multiple
            Upstream CDNs ............................................37
   4. Main Interfaces ................................................38
      4.1. In-Band versus Out-of-Band Interfaces .....................39
      4.2. Cross-Interface Concerns ..................................40

[include full document text]