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802.1Qbv - Enhancements for Scheduled Traffic

The full title of this PAR is "Standard for Local and Metropolitan Area Networks-Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks Amendment: Enhancements for Scheduled Traffic".

This amendment specifies time-aware queue-draining procedures, managed objects and extensions to existing protocols that enable bridges and end stations to schedule the transmission of frames based on timing derived from IEEE Std 802.1AS. Virtual Local Area Network (VLAN) tag encoded priority values are allocated allowing simultaneous support of scheduled traffic, credit-based shaper traffic and other bridged traffic over Local Area Networks (LANs).

Bridges are increasingly used to interconnect devices that support scheduled applications (e.g., industrial automation, process control and vehicle control). This amendment will provide performance assurances of latency and delivery variation to enable these applications in an engineered LAN while maintaining the existing guarantees for the credit-based shaper and best-effort traffic.

The credit-based shaper works well in arbitrary networks (i.e., non-engineered). Networks employing scheduled transmissions are able to control real-time processes. This amendment enables those two kinds of networks to be consolidated into a single network, with a significant cost reduction to the user.

Status
StatusPAR approved 15th May 2012.
EditorTony Jeffree

Archive
DateDocument
08 Jun 2012802.1Qbv, Draft 0.0
09 Nov 2012802.1Qbv, Draft 0.1
10 Jan 2013802.1Qbv, Draft 0.2
02 Dec 2013802.1Qbv, Draft 1.0
19 Jan 2014802.1Qbv, Draft 1.0 proposed comment dispositions
03 Feb 2014802.1Qbv, Draft 1.0 comment dispositions
07 Mar 2014802.1Qbv, Draft 1.1
21 Apr 2014802.1Qbv, Draft 1.2
11 May 2014802.1Qbv, Draft 1.2 proposed comment dispositions
12 May 2014802.1Qbv, Draft 1.2 proposed comment dispositions
26 Jun 2014802.1Qbv, Draft 1.2 comment dispositions
26 Jun 2014802.1Qbv, Draft 1.3
30 Jun 2014802.1Qbv, Draft 1.2 comment dispositions
16 Jul 2014802.1Qbv, Draft 1.3 proposed comment dispositions
29 Jul 2014802.1Qbv, Draft 1.3 comment dispositions
04 Sep 2014802.1Qbv, Draft 2.0
24 Oct 2014802.1Qbv, Draft 2.1

Presentations
DateDocument
16 May 2012Presentation bv-boiger-transmission-windows-0512-v01.pdf
16 May 2012Presentation bv-boiger-transmission-windows-0512-v02.pdf
10 Sep 2012Presentation bv-boiger-time-aware-shaper-0912-v02.pdf
16 Jan 2013Presentation bv-boiger-gates-vs-windows-scheduled-traffic-0113.pdf
16 Jan 2013Presentation bv-boiger-gates-vs-windows-scheduled-traffic-0113.pptx
20 Mar 2013Presentation bv-boiger-TAS-flush-queue-0313.pdf
16 May 2013Presentation bv-kiessling-Some-sources-of-Latency-and-Jitter-0513-v01.pdf
17 Jul 2013Presentation bv-goetz-TSN-RobustControlDataTraffic-0717-v1.pdf
05 Sep 2013Presentation bv-goetz-TSN-GuaranteedLatency4CDT-20130904-v1.pdf
07 Nov 2013Presentation bv-kerschbaum-TSN-Latency4CDT-112013-v4.pdf
08 Nov 2013Presentation bv-kerschbaum-TSN-Latency4CDT-112013-v5.pdf
15 May 2014Presentation bv-nfinn-specifying-gate-schedules-0514-v01.pdf

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Last modified by jmesseng, at 9:10AM on Fri, 24 Oct 2014