Asynchronous Layered Coding (ALC) Protocol Instantiation
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From: The IESG
To: IETF-Announce Cc: Internet Architecture Board , RFC Editor , rmt mailing list , rmt chair Subject: Protocol Action: 'Asynchronous Layered Coding (ALC) Protocol Instantiation' to Proposed Standard The IESG has approved the following document: - 'Asynchronous Layered Coding (ALC) Protocol Instantiation ' as a Proposed Standard This document is the product of the Reliable Multicast Transport Working Group. The IESG contact persons are Magnus Westerlund and Lars Eggert. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-rmt-pi-alc-revised-10.txt
Technical Summary This document is an Reliable Multicast Transport (RMT) Protocol Specification that builds upon the RMT Layered Coding Transport (LCT) building block document. This specification describes a massively scalable reliable content delivery protocol, Asynchronous Layered Coding (ALC), for multiple rate congestion controlled reliable content delivery. The protocol is specifically designed to provide massive scalability using IP multicast as the underlying network service. Massive scalability in this context means the number of concurrent receivers for an object is potentially in the millions, the aggregate size of objects to be delivered in a session ranges from hundreds of kilobytes to hundreds of gigabytes, each receiver can initiate reception of an object asynchronously, the reception rate of each receiver in the session is the maximum fair bandwidth available between that receiver and the sender, and all of this can be supported using a single sender. Working Group Summary There is consensus in the WG to publish this documents. Document Quality The document is of high quality and has been subject to extensive review in its Internet Draft and Experimental RFC forms. The revised draft represents a small number of changes from the original Experimental RFC 3450. Open source implementations of the ALC protocol are available and considerable experience in using this protocol has been accumulated. The protocol has been adopted by the Digital Video Broadcasting (DVB) industry consortium for content delivery. The content of this document was already reviewed and approved for publication as experimental RFC 3450. This document contains minor technical modifications. Personnel Brian Adamson is the Document Shepherd. Magnus Westerlund is the Responsible Area Director.