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802.1Qaz - Enhanced Transmission Selection

The full title of this PAR is "IEEE Standard for Local and Metropolitan Area Networks---Virtual Bridged Local Area Networks - Amendment: XX: Enhanced Transmission Selection.".

This standard specifies enhancement of transmission selection to support allocation of bandwidth amongst traffic classes. When the offered load in a traffic class doesn't use its allocated bandwidth, enhanced transmission selection will allow other traffic classes to use the available bandwidth. The bandwidth-allocation priorities will coexist with strict priorities. It will include managed objects to support bandwidth allocation.

Networks prioritize traffic to provide different service characteristics to traffic classes. It is desirable to be able to share bandwidth between priorities carrying bursty high offered loads rather than servicing them with strict priority while allowing strict priority for time-sensitive and management traffic requiring minimum latency. Also, when traffic at a priority level doesn't use its allocation, it is desirable to allow other priorities to use that bandwidth. For example, IEEE P802.1Qau will specify congestion management. Congestion managed traffic classes can share a network with traditional best effort LAN classes. Enhanced transmission selection will provide uniform management for the sharing of bandwidth between congestion managed classes and traditional classes on a single bridged network. Priorities using enhanced transmission selection will coexist with priorities using 802.1Qav queuing for time-sensitive streams.

There is significant customer interest and market opportunity for Ethernet as a consolidated Layer 2 solution in high-speed networks such as data centers, backplane fabrics, single and multi-chassis interconnects, computing clusters and storage networks. The differing service needs of applications supported on a consolidated Ethernet are supported by separate traffic classes. These applications often provide bursty loads for large transfers. Support of these classes on the same links requires the ability to allocate a guaranteed share of bandwidth to each class and to allow classes with offered load to fully utilize bandwidth when offered load for another class doesn't require its full share of bandwidth. Use of a consolidated network will realize operation and equipment cost benefits. This project allows a uniform management of bandwidth allocation between classes.

Status
StatusPAR approved March 27th, 2008; Modified Dec 9th, 2009; Standard approved Jun 16th, 2011
EditorCraig Carlson

Archive
DateDocument
10 Sep 2008802.1az, Draft 0.0
03 Nov 2008802.1az, Draft 0.1
24 Nov 2008802.1az, Draft 0.2
24 Jun 2009802.1az, Draft 0.3
15 Jul 2009802.1az, Draft 0.3 proposed comment dispositions
22 Jul 2009802.1az, Draft 0.3 comment dispositions
18 Aug 2009802.1az, Draft 0.4
17 Sep 2009802.1az, Draft 0.4 comment dispositions
08 Nov 2009802.1az, Draft 1.0 with changebars
08 Nov 2009802.1az, Draft 1.0
25 Nov 2009802.1az, Draft 1.1 with changebars
25 Nov 2009802.1az, Draft 1.1
06 Jan 2010802.1az, Draft 1.1
15 Jan 2010802.1az, Draft 1.1 proposed comment dispositions
01 Feb 2010802.1az, Draft 1.1 proposed comment dispositions
01 Mar 2010802.1az, Draft 1.2
11 Apr 2010802.1az, Draft 1.3 with changebars
11 Apr 2010802.1az, Draft 1.3 MIB
11 Apr 2010802.1az, Draft 1.3
12 Apr 2010802.1az, Draft 1.1 comment dispositions
29 Apr 2010802.1az, Draft 1.3 proposed comment dispositions
05 May 2010802.1az, Draft 1.3 proposed comment dispositions
06 May 2010802.1az, Draft 1.4 with changebars
06 May 2010802.1az, Draft 1.4
23 May 2010802.1az, Draft 1.4 proposed comment dispositions
01 Jun 2010802.1az, Draft 1.4 proposed comment dispositions
04 Jun 2010802.1az, Draft 1.4 comment dispositions
04 Jun 2010802.1az, Draft 1.5 with changebars
04 Jun 2010802.1az, Draft 1.5
04 Jun 2010802.1az, Draft 1.5
25 Jun 2010802.1az, Draft 1.6 with changebars
25 Jun 2010802.1az, Draft 1.6
25 Jun 2010802.1az, Draft 1.6
12 Jul 2010802.1az, Draft 1.6 proposed comment dispositions
13 Jul 2010802.1az, Draft 1.6 proposed comment dispositions
30 Jul 2010802.1az, Draft 1.6 comment dispositions
30 Jul 2010802.1az, Draft 1.7 with changebars
30 Jul 2010802.1az, Draft 1.7
30 Jul 2010802.1az, Draft 1.7
05 Aug 2010802.1az, Draft 1.8 with changebars
05 Aug 2010802.1az, Draft 1.8
02 Sep 2010802.1az, Draft 1.8 proposed comment dispositions
23 Sep 2010802.1az, Draft 1.8 comment dispositions
23 Sep 2010802.1az, Draft 2.0
23 Sep 2010802.1az, Draft 2.0
04 Nov 2010802.1az, Draft 2.0 proposed comment dispositions
10 Nov 2010802.1az, Draft 2.0 proposed comment dispositions
24 Nov 2010802.1az, Draft 2.0 comment dispositions
28 Nov 2010802.1az, Draft 2.1 with changebars
28 Nov 2010802.1az, Draft 2.1
28 Nov 2010802.1az, Draft 2.1
14 Dec 2010802.1az, Draft 2.1 proposed comment dispositions
16 Dec 2010802.1az, Draft 2.1 comment dispositions
16 Dec 2010802.1az, Draft 2.2 with changebars
16 Dec 2010802.1az, Draft 2.2
16 Dec 2010802.1az, Draft 2.2
17 Dec 2010802.1az, Draft 2.1 comment dispositions
17 Dec 2010802.1az, Draft 2.3 with changebars
17 Dec 2010802.1az, Draft 2.3
17 Dec 2010802.1az, Draft 2.3
07 Jan 2011802.1az, Draft 2.3 proposed comment dispositions
22 Feb 2011802.1az, Draft 2.3 comment dispositions
22 Feb 2011802.1az, Draft 2.4 with changebars
22 Feb 2011802.1az, Draft 2.4
22 Feb 2011802.1az, Draft 2.4
30 Mar 2011802.1az, Draft 2.5 change pages
30 Mar 2011802.1az, Draft 2.5

Presentations
DateDocument
29 Jan 2008Presentation az-wadekar-dcbcxp-overview-rev0.2.pdf
29 Jan 2008Presentation az-wadekar-priority-groups-further-discussion-rev0.2.pdf
30 Jan 2008Presentation az-aboulmagd-transmission-selection-0108-v01.pdf
31 Mar 2008Presentation az-thaler-par-0308.pdf
13 May 2008Presentation az-wadekar-ets-proposal-rev-1.0.pdf
27 Jun 2008Presentation az-wadekar-ets-proposal-0608-v1.01.pdf
10 Jul 2008Presentation az-cowart-MIB-0708.mib
10 Jul 2008Presentation az-cowart-MIB-0708.pdf
13 Jul 2008Presentation az-cowart-DCBX-MIB-0708.mib
13 Jul 2008Presentation az-cowart-DCBX-MIB-0708.pdf
13 Jul 2008Presentation az-cowart-DCBX-MIB-0708.ppt
16 Jul 2008Presentation az-ghanwani-ets-proposal-0708-v1.pdf
16 Jul 2008Presentation az-wadekar-dcbx-capability-exchange-discovery-protocol-0608-v1.0.pdf
16 Jul 2008Presentation az-wadekar-dcbx-v1.0-overview-0708.pdf
17 Jul 2008Presentation az-ghanwani-ets-proposal-0708-v1.pdf
17 Jul 2008Presentation az-pelissier-convergence-proposal-0708.pdf
14 Sep 2008Presentation az-carlson-ets-pfc-discussion-0908-v0.ppt
10 Nov 2008Presentation az-carlson-draft-0-1-status-1110-v1.pdf
10 Nov 2008Presentation az-dcb-baseline-contributions-1108-v1.0.pdf.pdf
10 Nov 2008Presentation az-wadekar-dcbx-capability-exchange-discovery-protocol-1108-v1.01.pdf
11 Nov 2008Presentation az-carlson-draft-0-1-status-1110-v2.pdf
17 Nov 2008Presentation az-nfinn-lldp-state-machine-1108-v1.pdf
18 Nov 2008Presentation az-nfinn-lldp-state-machine-1108-v2.pdf
03 Dec 2008Presentation az-pelissier-dcbx-thoughts-1208.pdf
04 Dec 2008Presentation az-nfinn-lldp-state-machine-1108-v3.pdf
25 Mar 2009Presentation az-pelissier-dcbx-framework-0309.pdf
02 Apr 2009Presentation az-wadekar-dcbx-simplified-with-ready-0409-v1.pdf
09 Apr 2009Presentation az-wadekar-dcbx-simplified-with-ready-0409-v1.04.pdf
16 Apr 2009Presentation az-pelissier-dcbx-framework-0409v2.pdf
23 Apr 2009Presentation az-multanen-dcbx-xchg-status-v01.pdf
30 Apr 2009Presentation az-pelissier-dcbx-framework-0409v3.pdf
30 Apr 2009Presentation az-pelissier-dcbx-framework-0409v4.pdf
20 May 2009Presentation az-pelissier-dcbx-framework-0509.pdf
16 Jul 2009Presentation az-thaler-scope-change-0709.pdf
27 Jul 2009Presentation az-pelissier-dcbxmib-proposal-0709.mib
03 Sep 2009Presentation az-pelissier-dcbxmib-proposal-0909.mib
15 Sep 2009Presentation az-draft-par-modification-0909.pdf
23 Sep 2009Presentation az-ghanwani-pfc-defense-0909-v01.pdf
24 Sep 2009Presentation az-ghanwani-pfc-defense-0909-v02.pdf
18 Nov 2009Presentation az-thaler-draft-par-1109.pdf

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Last modified by jmesseng, at 11:37PM on Thu, 15 Sep 2011