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802.1Qcr - Bridges and Bridged Networks Amendment: Asynchronous Traffic Shaping

The full title of this PAR is "Standard for Local and Metropolitan Area Networks - Bridges and Bridged Networks Amendment: Asynchronous Traffic Shaping".

This project specifies procedures and managed objects for a bridge to perform asynchronous traffic shaping over full-duplex links with constant bit data rates. Asynchronous traffic shaping provides an additional layer of shaped egress queues to merge flows into the existing queue structure. The required minimum number of independent queues at an egress port is adjustable and is at least the number of ingress ports of the particular bridge that require merging. The project provides an informative framework for worst case delay analysis in static networks/configurations.

There is well defined traffic that requires zero congestion loss and deterministic latency. Current bridging standards do not provide a sufficiently fine grained asynchronous traffic mechanism to meet these requirements without using network topology information. This project specifies mechanisms that do not rely on synchronous communication, thereby providing independence from clock synchronization mechanisms and higher link utilization than synchronous mechanisms.

Status
StatusPAR approved Jun 30, 2016.
EditorJohannes Specht

Archive
DateDocument
09 Jan 2017802.1Qcr, Draft 0.0

Presentations
DateDocument
21 May 2015Presentation new-tsn-specht-ubs-queues-0521-v0.pdf
24 May 2016Presentation Qcr-specht-specification-mapping-proposal-0516-v01.pdf
27 Jul 2016Presentation cr-nadas-combining-ATS-and-SRS-0716-v01.pdf
13 Sep 2016Presentation cr-nadas-combining-ATS-and-SRS-0916-v01.pdf
10 Nov 2016Presentation Qcr-specht-editing-1116-v01.pdf
12 Dec 2016Presentation cr-nadas-SRS-for-TSN-use-cases-1216-v01.pdf
21 Feb 2017Presentation cr-seaman-paternoster-policing-scheduling-0217-v02.pdf

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Last modified by jmesseng, at 6:10PM on Tue, 21 Feb 2017