A Common API for Transparent Hybrid Multicast
draft-irtf-samrg-common-api-06

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Last updated 2012-08-03
Replaces draft-waehlisch-sam-common-api
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SAM Research Group                                          M. Waehlisch
Internet-Draft                                      link-lab & FU Berlin
Intended status: Experimental                               T C. Schmidt
Expires: February 4, 2013                                    HAW Hamburg
                                                               S. Venaas
                                                           cisco Systems
                                                          August 3, 2012

             A Common API for Transparent Hybrid Multicast
                     draft-irtf-samrg-common-api-06

Abstract

   Group communication services exist in a large variety of flavors, and
   technical implementations at different protocol layers.  Multicast
   data distribution is most efficiently performed on the lowest
   available layer, but a heterogeneous deployment status of multicast
   technologies throughout the Internet requires an adaptive service
   binding at runtime.  Today, it is difficult to write an application
   that runs everywhere and at the same time makes use of the most
   efficient multicast service available in the network.  Facing
   robustness requirements, developers are frequently forced to use a
   stable, upper layer protocol provided by the application itself.
   This document describes a common multicast API that is suitable for
   transparent communication in underlay and overlay, and grants access
   to the different multicast flavors.  It proposes an abstract naming
   by multicast URIs and discusses mapping mechanisms between different
   namespaces and distribution technologies.  Additionally, it describes
   the application of this API for building gateways that interconnect
   current multicast domains throughout the Internet, and reports on an
   implementation of the programming interface including a service
   middleware.  This document is a product of the Scalable Adaptive
   Multicast Research Group (SAM) Research Group.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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

   This Internet-Draft will expire on February 4, 2013.

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
   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
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.1.  Use Cases for the Common API . . . . . . . . . . . . . . .  6
     1.2.  Illustrative Examples  . . . . . . . . . . . . . . . . . .  7
       1.2.1.  Support of Multiple Underlying Technologies  . . . . .  7
       1.2.2.  Support of Multi-Resolution Multicast  . . . . . . . .  9
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . . 10
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     3.1.  Objectives and Reference Scenarios . . . . . . . . . . . . 11
     3.2.  Group Communication API and Protocol Stack . . . . . . . . 12
     3.3.  Naming and Addressing  . . . . . . . . . . . . . . . . . . 14
     3.4.  Namespaces . . . . . . . . . . . . . . . . . . . . . . . . 15
       3.4.1.  Generic Namespaces . . . . . . . . . . . . . . . . . . 15
       3.4.2.  Application-centric Namespaces . . . . . . . . . . . . 15
     3.5.  Name-to-Address Mapping  . . . . . . . . . . . . . . . . . 16
       3.5.1.  Canonical Mapping  . . . . . . . . . . . . . . . . . . 16
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