A Common API for Transparent Hybrid Multicast
RFC 7046
Document | Type |
RFC - Experimental
(December 2013; No errata)
Was draft-irtf-samrg-common-api (samrg RG)
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|
---|---|---|---|
Last updated | 2015-11-19 | ||
Replaces | draft-waehlisch-sam-common-api | ||
Stream | IRTF | ||
Formats | plain text pdf htmlized bibtex | ||
IETF conflict review | conflict-review-irtf-samrg-common-api | ||
Stream | IRTF state | Published RFC | |
Consensus Boilerplate | Unknown | ||
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 7046 (Experimental) | |
Telechat date | |||
Responsible AD | Brian Haberman | ||
Send notices to | buford@samrg.org | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Research Task Force (IRTF) M. Waehlisch Request for Comments: 7046 link-lab & FU Berlin Category: Experimental T. Schmidt ISSN: 2070-1721 HAW Hamburg S. Venaas Cisco Systems December 2013 A Common API for Transparent Hybrid Multicast 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 that grants access to the different flavors of multicast. It proposes an abstract naming scheme that uses multicast URIs, and it discusses mapping mechanisms between different namespaces and distribution technologies. Additionally, this document describes the application of this API for building gateways that interconnect current Multicast Domains throughout the Internet. It reports on an implementation of the programming Interface, including service middleware. This document is a product of the Scalable Adaptive Multicast (SAM) Research Group. Waehlisch, et al. Experimental [Page 1] RFC 7046 Common Mcast API December 2013 Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Research Task Force (IRTF). The IRTF publishes the results of Internet-related research and development activities. These results might not be suitable for deployment. This RFC represents the consensus of the Scalable Adaptive Multicast Research Group of the Internet Research Task Force (IRTF). Documents approved for publication by the IRSG are not a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7046. Copyright Notice Copyright (c) 2013 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. Table of Contents 1. Introduction ....................................................4 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 .......................................................10 3.1. Objectives and Reference Scenarios ........................10 3.2. Group Communication API and Protocol Stack ................12 3.3. Naming and Addressing .....................................14 3.4. Namespaces ................................................15 Waehlisch, et al. Experimental [Page 2] RFC 7046 Common Mcast API December 2013 3.5. Name-to-Address Mapping ...................................15 3.5.1. Canonical Mapping ..................................16 3.5.2. Mapping at End Points ..............................16 3.5.3. Mapping at Inter-Domain Multicast Gateways .........16 3.6. A Note on Explicit Multicast (Xcast) ......................16 3.7. MTU Handling ..............................................17 4. Common Multicast API ...........................................18Show full document text