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.

Date Document
May 2025 802.1AS-2020-rev-D1.1 Editor’s Report for WG recirculation Ballot – v01
April 2025 802.1AS-2020-rev-D1.0 Editor’s Report for WG Ballot – v05
Jan 2025 802.1AS-2020-rev-D0.1 Editor’s Report for TG Ballot – v04

The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft (see filenames beginning “ds-” in the 2022 and 2023 public directories for a complete list).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.

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