P802.1ASdm – Hot Standby
This amendment specifies protocols, procedures, and managed objects for hot standby without use of the Best Master Clock Algorithm (BMCA), for time-aware systems, including:
- A function that transforms the synchronized times of two generalized Precision Time Protocol (gPTP) domains into one synchronized time for use by applications;
- A function that directs the synchronized time of one gPTP domain into a different gPTP domain; and
- Mechanisms that determine whether a gPTP domain has sufficient quality to be used for hot standby.
This amendment also addresses errors and omissions in the description of existing functionality.
Current Status
| Draft | P802.1ASdm, Draft 2.5 (8 July 2024) |
| Status | Approved Draft Standard |
| PAR & CSD | Full title: Draft Standard for Local and Metropolitan Area Networks: Timing and Synchronization for Time-Sensitive Applications — Amendment: Hot Standby and Clock Drift Error Reduction |
| Editor | Geoffrey Garner |
| Web page | Craig Gunther |
Archive
| 08 Jan 2024 | P802.1ASdm, Draft 1.5 |
| 08 Jan 2024 | P802.1ASdm, Draft 1.4 WG recirculation comment disposition |
| 07 Dec 2023 | P802.1ASdm, Draft 1.4 |
| 14 Nov 2023 | P802.1ASdm, Draft 1.3 WG recirculation comment disposition |
| 12 Oct 2023 | P802.1ASdm, Draft 1.3 |
| 09 Oct 2023 | P802.1ASdm, Draft 1.2 WG recirculation comment disposition |
| 18 Aug 2023 | P802.1ASdm, Draft 1.2 |
| 28 Jul 2023 | |
| 29 May 2023 | |
| 22 May 2023 | |
| 27 Jan 2023 | |
| 27 Jan 2023 | |
| 18 Nov 2022 | |
| 03 Aug 2022 | |
| 03 Aug 2022 | |
| 11 Jul 2022 | |
| 21 Jan 2022 | |
| 11 Jan 2022 | |
| 13 Dec 2021 | |
| 01 Sep 2021 | |
| 09 Aug 2021 | |
| 15 Mar 2021 |
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.
As assembled by the editor. Notify the editor of any errors or omissions. This list may omit documents superseded by later versions. For the full list of contributions, see filenames beginning “dm-” in the 2020, 2021 and 2022 802.1 public directories. The dates listed are the website file dates and often differ from creation dates in the documents.| Date | Document ID | Title | Author |
|---|---|---|---|
| 2021-11-15 | dm-turner-ASredundancy-1121-v01.pdf | IEEE802.1ASdm – Redundancy | Max Turner |
| 2021-09-15 | dm-turner-text-contribution-0921-v01.pdf | Contribution towards P802.1ASdm/D0.3 Comment resolution | Max Turner |
| 2021-08-09 | asdm-garner-discussion-of-maint-items-331-332-0821-v02.pdf | Discussion of Maintenance Items 331 and 332 – Revision 2 | Geoffrey Garner |
| 2021-06-21 | dm-Lv-Rodrigues-comment-84-against-d0-2-0621-v00.pdf | Comment #84 of IEEE Draft P802.1ASdm/D0.2 | Jingfei Lv, Silvana Rodrigues |
| 2020-11-02 | dm-garner-plans-1120-v00.pdf | Initial Plans and Assumptions for 802.1ASdm | Geoffrey Garner |
| 2020-03-09 | dm-cummings-as-4-domains-0320-v04.pdf | 802.1AS Hot Standby Amendment: 4 Domains | Rodney Cummings |
| 2020-02-18 | dm-potts-as-hot-standby-multiple-domains-0220-v01.pdf | IEEE 802.1AS-2020 Addendum for “Hot-Standby” with multiple domain definition | Michael Potts |
| 2020-01-16 | new-cummings-as-hot-standby-scope-0120-v02.pdf | 802.1AS Hot Standby Amendment: Scope Discussion | Rodney Cummings |
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 “dm-” in the 2020 or 2021 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 Craig Gunther if you have comments on this page.