Models for adaptive-streaming-aware CDN Interconnection
draft-brandenburg-cdni-has-00

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CDNI                                                  R. van Brandenburg
Internet-Draft                                           O. van Deventer
Intended status: Informational                                       TNO
Expires: August 27, 2012                               February 24, 2012

        Models for adaptive-streaming-aware CDN Interconnection
                     draft-brandenburg-cdni-has-00

Abstract

   This documents presents thougths on the potential impact of
   supporting HTTP Adaptive Streaming technologies in CDN
   Interconnection scenarios.  Our intent is to spur discussion on how
   the different CDNI interfaces should deal with content delivered
   using adaptive streaming technologies.

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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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 27, 2012.

Copyright Notice

   Copyright (c) 2012 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
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  HTTP Adaptive Streaming aspects relevant to CDNI . . . . . . .  4
     2.1.  Segmentation versus Fragmentation  . . . . . . . . . . . .  4
     2.2.  Addressing chunks  . . . . . . . . . . . . . . . . . . . .  5
       2.2.1.  Full Locator . . . . . . . . . . . . . . . . . . . . .  6
       2.2.2.  Relative Locator . . . . . . . . . . . . . . . . . . .  7
       2.2.3.  Chunk Request Routing  . . . . . . . . . . . . . . . .  7
   3.  Impact of HAS on CDNI  . . . . . . . . . . . . . . . . . . . .  8
     3.1.  General  . . . . . . . . . . . . . . . . . . . . . . . . .  8
       3.1.1.  On the definition of a Content Item in CDNI  . . . . .  8
       3.1.2.  General CDNI-HAS Requirements  . . . . . . . . . . . . 10
     3.2.  Impact on Request Routing Interface  . . . . . . . . . . . 10
       3.2.1.  Dealing with manifest files  . . . . . . . . . . . . . 10
       3.2.2.  HAS Request Routing  . . . . . . . . . . . . . . . . . 11
       3.2.3.  Dividing content over multiple nodes . . . . . . . . . 12
       3.2.4.  HAS Requirements for the CDNI Request Routing
               Interface  . . . . . . . . . . . . . . . . . . . . . . 12
     3.3.  Impact on Metadata Interface . . . . . . . . . . . . . . . 12
       3.3.1.  HAS-specific Metadata  . . . . . . . . . . . . . . . . 12
       3.3.2.  HAS Requirements for the CDNI Metadata Interface . . . 13
     3.4.  Impact on Logging Interface  . . . . . . . . . . . . . . . 13
       3.4.1.  Log processing . . . . . . . . . . . . . . . . . . . . 13
       3.4.2.  HAS Requirements for the CDNI Logging Interface  . . . 14
     3.5.  Impact on Control Interface  . . . . . . . . . . . . . . . 14
       3.5.1.  HAS Requirements for the CDNI Control Interface  . . . 14
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 14
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     6.1.  Normative References . . . . . . . . . . . . . . . . . . . 14
     6.2.  Informative References . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15

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