A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : iPRP: Parallel Redundancy Protocol for IP Networks
Authors : Miroslav Popovic
Maaz Mohiuddin
Jean-Yves Le Boudec
Dan-Cristian Tomozei
Filename : draft-popovic-iprp-01.txt
Pages : 19
Date : 2016-02-01
Abstract:
Reliable packet delivery within stringent delay-constraints is of
paramount importance to mission-critical computer applications with
hard real-time constraints. Because retransmission and coding
techniques counteract the delay requirements, reliability may be
achieved through replication over multiple fail-independent paths.
Existing solutions, such as the parallel redundancy protocol (PRP),
replicate all packets at the MAC layer over parallel paths. PRP works
best in local area networks. However, it is not viable for IP
networks that are a key element of emerging mission-critical systems.
This limitation, coupled with diagnostic inability and lack of
security, renders PRP unsuitable for reliable data-delivery in these
IP networks. To address this issue, we present a transport-layer
solution: the IP parallel redundancy protocol (iPRP). Designing iPRP
poses non-trivial challenges in the form of selective packet-
replication, soft-state and multicast support. iPRP replicates only
time-critical unicast or multicast UDP traffic. iPRP requires no
modifications to the existing monitoring application, end-device
operating system or to the intermediate network devices. It only
requires a simple software installation on the end-devices. iPRP has
a set of diagnostic tools for network debugging. With our
implementation of iPRP in Linux, we show that iPRP supports multiple
flows with minimal processing-and-delay overhead. It is being
installed in our campus smart-grid network and is publicly available.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-popovic-iprp/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-popovic-iprp-01
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-popovic-iprp-01
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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