802.1AS-2020-Revision – Timing and Synchronization for Time-Sensitive Applications
This standard specifies protocols, procedures, and managed objects used to ensure that the synchrnization requirements are met for time-sensitive applications, such as audio, video, and time-sensitive control, across networks, for example, IEEE 802 and similar media. This includes the maintenance of synchronized time during normal operation and following addition, removal, or failure of network components and network reconfiguration. It specifies the use of IEEE 1588™ specifications where applicable in the context of IEEE Std 802.1Q™. Synchronization to an externally provided timing signal [e.g., a recognized timing standard such as Coordinated Universal Time (UTC) or International Atomic Time (TAI)] is not part of this standard but is not precluded.
This is a maintenance roll-up of IEEE Std 802.1AS-2020 with the corrigendum IEEE Std 802.1AS-2020/Cor1 and amendment IEEE Std 802.1ASdr. Depending on their progress to approval, other amendments and corrigenda in progress may also be included.
Current Status
| Status | WG Ballot |
| Current Draft | D1.2 |
| PAR | Full title: Standard for Local and Metropolitan Area Networks–Timing and Synchronization for Time-Sensitive Applications PAR (Approved: 05 June 2023; Expires: 31 Dec 2027) |
| Editor | Silvana Rodrigues |
Archive
| Date | Document |
|---|---|
| May 21 2025 | Final Disposition of WG recirculation Ballot Comments on D1.1 |
| April 25 2024 | Draft D1.1 |
| May 15 2025 | Final Disposition of WG Ballot Comments on D1.0 |
| Feb 04 2024 | Draft D1.0 |
| Jan 24 2025 | Final Disposition of TG Ballot Comments on D0.1 |
| Dec 11 2024 | Draft D0.1 |
The above list includes only the latest version of 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The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft (see filenames beginning “ds-” in the 2022 and 2023 public directories for a complete list).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 or the Maintenance Task Group Chair if you have comments on the 802.1AS-2020-Rev page.