Content Delivery Network Interconnection (CDNI) Request Routing: CDNI Footprint and Capabilities Advertisement using ALTO
draft-ietf-alto-cdni-request-routing-alto-00

Document Type Active Internet-Draft (alto WG)
Last updated 2017-07-20
Replaces draft-seedorf-cdni-request-routing-alto
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CDNI                                                          J. Seedorf
Internet-Draft                 HFT Stuttgart - Univ. of Applied Sciences
Intended status: Standards Track                                 Y. Yang
Expires: January 21, 2018                                    Tongji/Yale
                                                                   K. Ma
                                                                Ericsson
                                                             J. Peterson
                                                                 Neustar
                                                           July 20, 2017

 Content Delivery Network Interconnection (CDNI) Request Routing: CDNI
          Footprint and Capabilities Advertisement using ALTO
              draft-ietf-alto-cdni-request-routing-alto-00

Abstract

   The Content Delivery Networks Interconnection (CDNI) WG is defining a
   set of protocols to inter-connect CDNs, to achieve multiple goals
   such as extending the reach of a given CDN to areas that are not
   covered by that particular CDN.  One componet that is needed to
   achieve the goal of CDNI is the CDNI Request Routing Footprint &
   Capabilities Advertisement interface (FCI) [RFC7336].  [RFC8008] has
   defined precisely the semantics of FCI and provided guidelines on the
   FCI protocol, but the exact protocol is explicitly outside the scope
   of that document.  In this document, we define an FCI protocol using
   the Application Layer Traffic Optimization (ALTO) protocol.

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

   This Internet-Draft will expire on January 21, 2018.

Seedorf, et al.         Expires January 21, 2018                [Page 1]
Internet-Draft             CDNI FCI using ALTO                 July 2017

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Semantics of FCI Advertisment . . . . . . . . . . . . . .   4
     2.2.  ALTO Background and Benefits  . . . . . . . . . . . . . .   5
   3.  CDNI FCI ALTO Service . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Server Response Encoding  . . . . . . . . . . . . . . . .   8
       3.1.1.  Media Type  . . . . . . . . . . . . . . . . . . . . .   8
       3.1.2.  Meta Information  . . . . . . . . . . . . . . . . . .   8
       3.1.3.  Data Information  . . . . . . . . . . . . . . . . . .   8
     3.2.  Protocol Errors . . . . . . . . . . . . . . . . . . . . .   8
     3.3.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .   8
       3.3.1.  Basic Example . . . . . . . . . . . . . . . . . . . .   8
       3.3.2.  Incremental FCI Update Example  . . . . . . . . . . .   9
       3.3.3.  FCI Using ALTO Network Map Example  . . . . . . . . .   9
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     6.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

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
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