P802.1ASed – Fault-Tolerant Timing with Time Integrity
This amendment specifies protocols, processes, procedures, functions, mechanisms, and managed objects to enable fault-tolerant timing by increasing the availability of the time and adding time integrity. This is achieved using two or more generalized Precision Time Protocol (gPTP) domains, multiple time distribution paths, the local oscillator clock, and a time selection function with individual processes for times that have interdependencies and times that do not have interdependencies. Fault-tolerant timing includes fault-tolerant time generation and distribution.
Current Status
| Status | Standards Association 2nd Recirculation Ballot (closed) |
| Current Draft | D3.2 (Oct 22, 2025) |
| PAR & CSD | Full title: Draft Standard for Local and Metropolitan Area Networks: Timing and Synchronization for Time-Sensitive Applications — Amendment: Fault-Tolerant Timing with Time Integrity PAR (Approved: 2024-09-26; Expires: 2028-12-31) CSD |
| Editor | Abdul Jabbar |
| Web page | Tim Wood |
Archive
| Date | Document |
|---|---|
| 23 September 2025 | 802-1ASed-d3-0-dis-v01.pdf |
| 18 August 2025 | 802-1ASed-d2-3-dis.pdf |
| 29 July 2025 | 802-1ASed-d2-2-dis-v01.pdf |
| 10 July 2025 | 802-1ASed-d2-1-dis-v01.pdf |
| 21 March 2025 | 802-1ASed-d2-0-dis-v02.pdf |
| 14 November 2024 | 802-1ASed-d1-0-dis.pdf |
| 08 November 2024 | 802-1ASed-d1-0-pdis-v01.pdf |
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.
The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft.
Please contact the Editor if you have comments to this page.