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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