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I-D ACTION:draft-ietf-rmt-pi-norm-05.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Reliable Multicast Transport Working Group of the IETF.

	Title		: NACK-Oriented Reliable Multicast Protocol (NORM)
	Author(s)	: B. Adamson, C. Bormann, M. Handley, J. Macker
	Filename	: draft-ietf-rmt-pi-norm-05.txt
	Pages		: 54
	Date		: 2002-11-5
This document describes the messages and procedures of the Nega-
tive-acknowledgement (NACK) oriented reliable multicast (NORM) pro-
tocol.  This protocol is designed to provide end-to-end reliable
transport of bulk data objects or streams over generic IP multicast
routing and forwarding services.  NORM uses a selective, negative
acknowledgement mechanism for transport reliability and offers
additional protocol mechanism to conduct reliable multicast ses-
sions with little 'a priori' coordination among senders and
receivers.  It is capable of operating with both reciprocal multi-
cast routing among senders and receivers and with asymmetric
connectivity (possibly a unicast return path) from the senders to
receivers.  The protocol offers a number of features to allow dif-
ferent types of applications or possibly other higher level trans-
port protocols to utilize its service in different ways.  The pro-
tocol leverages the use of FEC-based repair and other IETF reliable
multicast transport (RMT) building blocks in its design.

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