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CDNI Footprint and Capabilities Advertisement using ALTO
draft-seedorf-cdni-request-routing-alto-07

Document type: Active Internet-Draft (individual in tsv area)
Document stream: IETF
Last updated: 2014-06-27
Intended RFC status: Informational
Other versions: plain text, pdf, html

IETF State: (None)
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: December 29, 2014                                          Yale
                                                             J. Peterson
                                                                 Neustar
                                                           June 27, 2014

        CDNI Footprint and Capabilities Advertisement using ALTO
               draft-seedorf-cdni-request-routing-alto-07

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 specifies a new Application Layer Traffic
   Optimization (ALTO) service to facilitate Footprint & Capabilities
   Advertisement in a CDNI context.

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 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 December 29, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Seedorf, et al.         Expires December 29, 2014               [Page 1]
Internet-Draft             CDNI FCI using ALTO                 June 2014

   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 Considerations  . . . . . . . . .   4
     3.2.  Semantics for Footprint/Capabilities Advertisment . . . .   5
     3.3.  Advantages of using ALTO as the CDNI FCI protocol . . . .   7
     3.4.  Selection of a Downstream CDN with ALTO . . . . . . . . .   7
   4.  CDNI FCI ALTO Service . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Server Response Encoding  . . . . . . . . . . . . . . . .   8
       4.1.1.  CDNI FCI Map  . . . . . . . . . . . . . . . . . . . .   8
       4.1.2.  Meta Information  . . . . . . . . . . . . . . . . . .   8
       4.1.3.  Data Information  . . . . . . . . . . . . . . . . . .   8
     4.2.  Protocol Errors . . . . . . . . . . . . . . . . . . . . .   8
     4.3.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   9
   5.  Useful ALTO extensions for CDNI Request Routing . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   Many Network Service Providers (NSPs) are currently considering or
   have already started to deploy Content Delivery Networks (CDNs)
   within their networks.  As a consequence of this development, there
   is a need for interconnecting these local CDNs.  Content Delivery
   Networks Interconnection (CDNI) has the goal of standardizing
   protocols to enable such interconnection of CDNs [RFC6707].

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