P802.1Qdt – Priority-based Flow Control Enhancements
This amendment specifies procedures and managed objects for automated Priority-based Flow Control (PFC) headroom calculation and Media Access Control Security (MACsec) protection of PFC frames, using point-to-point roundtrip measurement and enhancements to the Data Center Bridging Capability Exchange protocol (DCBX).
This amendment places emphasis on the requirements for low latency and lossless transmission in large-scale and geographically dispersed data centers.
This amendment also addresses errors of the existing IEEE Std 802.1Q functionality.
Current Status
| Status | Editor’s draft |
| Current Draft | D0.2 (15 Sep 2022) |
| PAR & CSD | Full title: Draft Standard for Local and Metropolitan Area Networks: Bridges and Bridged Networks — Amendment: Priority-based Flow Control Enhancements PAR (Approved: 05 Jun 2023; Expires: 31 Dec 2026) CSD |
| Editor | Lily Lv |
Archive
| Date | Document |
|---|---|
| 15 Sep 2022 | P802.1Qdt, Draft 0.2 |
| 13 Sep 2022 | P802.1Qdt, Draft 0.0 |
The above list includes only the latest version of (proposed) dispositions. See the project folder for a complete list). The dates listed are the website file dates; they may differ from the creation dates in the documents.
Contributions
Important NOTICE on contributions.
| Date | Document |
|---|---|
| 11 July 2023 | Headroom Measurement Protocol Design |
| 17 May 2023 | Headroom Measurement Protocol Design |
| 14 Mar 2023 | PFC round trip timing protocol |
| 13 Mar 2023 | Headroom Measurement Protocol Design |
| 14 Feb 2023 | Headroom Measurement Protocol Design |
| 18 Jan 2023 | Headroom Measurement Protocol Design |
| 18 Jan 2023 | Qdt PAR&CSD Modification |
| 17 Jan 2023 | PFC management objects |
| 10 Nov 2022 | P802.1Qdt Status Update and New Proposal Discussion |
| 27 Oct 2022 | P802.1Qdt Status Update and New Proposal Discussion |
| 10 Jul 2022 | PFC Enhancements Discussion – PFC Management |
| 14 Nov 2021 | Recap of Headroom and Enhancements Project Proposal |
| 23 Sep 2021 | PFC Headroom and Enhancements Project Proposal |
| 02 Jul 2021 | PFC Headroom Measurement and Calculation Project Proposal |
| 21 Jun 2021 | Adaptive PFC Headroom and PTP |
| 08 Mar 2021 | Adaptive PFC Headroom |
The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft (see filenames beginning “dt-” in the 2023 public directories for a complete list). The dates listed are the website file dates; they may differ from the creation dates in the documents.
Please contact the Editor if you have comments to this page.