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CDNI Footprint and Capabilities Advertisement using ALTO
draft-seedorf-cdni-request-routing-alto-06

Document type: Active Internet-Draft (individual in tsv area)
Document stream: IETF
Last updated: 2014-02-28 (latest revision 2014-02-14)
Intended RFC status: Informational
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: AD is watching
Responsible AD: Martin Stiemerling
Send notices to: jan.seedorf@neclab.eu, draft-seedorf-cdni-request-routing-alto@tools.ietf.org

CDNI                                                          J. Seedorf
Internet-Draft                                                       NEC
Intended status: Informational                                   Y. Yang
Expires: August 18, 2014                                            Yale
                                                       February 14, 2014

        CDNI Footprint and Capabilities Advertisement using ALTO
               draft-seedorf-cdni-request-routing-alto-06

Abstract

   Network Service Providers (NSPs) are currently considering to deploy
   Content Delivery Networks (CDNs) within their networks.  As a
   consequence of this development, there is a need for interconnecting
   these local CDNs.  The necessary interfaces for inter-connecting CDNs
   are currently being defined in the Content Delivery Networks
   Interconnection (CDNI) WG.  This document focuses on the CDNI
   Footprint & Capabilities Advertisement interface (FCI).
   Specifically, this document outlines how the solutions currently
   being defined in the Application Layer Traffic Optimization (ALTO) WG
   can facilitate Footprint & Capabilities Advertisement in a CDNI
   context, i.e. how the CDNI FCI can be realised with the ALTO
   protocol.  Concrete examples of how ALTO can be integrated within
   CDNI request routing and in particular in the process of selecting a
   downstream CDN are given.  The examples in this document are based on
   the use cases and examples currently being discussed in the CDNI WG.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://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 August 18, 2014.

Seedorf & Yang           Expires August 18, 2014                [Page 1]
Internet-Draft             CDNI FCI using ALTO             February 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  ALTO within CDNI Request Routing  . . . . . . . . . . . . . .   3
   3.  Assumptions and High-Level Design Considerations  . . . . . .   4
     3.1.  General Assumptions and Consideration . . . . . . . . . .   5
     3.2.  Semantics for Footprint/Capabilities Advertisment . . . .   5
   4.  Selection of a Downstream CDN with ALTO . . . . . . . . . . .   7
     4.1.  Footprint and Capabilities Advertisement using ALTO
           Network Map and PID Properties  . . . . . . . . . . . . .   7
     4.2.  Conveying additional information with ALTO Cost Maps  . .   9
     4.3.  Example of Selecting a Downstream CDN based on ALTO Maps    9
     4.4.  Advantages of using ALTO as the CDNI FCI protocol . . . .  10
   5.  Concrete Examples with ALTO Maps  . . . . . . . . . . . . . .  11
     5.1.  Example ALTO Network Map  . . . . . . . . . . . . . . . .  11
     5.2.  Example ALTO PID Property . . . . . . . . . . . . . . . .  12
   6.  Useful ALTO extensions for CDNI Request Routing . . . . . . .  13
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   8.  Summary and Outlook . . . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   Many Network Service Providers (NSPs) are currently considering or

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