IEEE 802.1ASds-2026

Current Amendment
IEEE Standard for Local and Metropolitan Area Networks--Timing and Synchronization for Time-Sensitive Applications Amendment 2: Support for the IEEE Std 802.3 Clause 4 Media Access Control (MAC) operating in half-duplex

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IEEE 802.1ASds-2026

IEEE Standard for Local and Metropolitan Area Networks--Timing and Synchronization for Time-Sensitive Applications Amendment 2: Support for the IEEE Std 802.3 Clause 4 Media Access Control (MAC) operating in half-duplex

PUBLISH DATE 2026
PAGES 68
IEEE 802.1ASds-2026

Amendment Standard - Active.

This amendment to IEEE Std 802.1AS™-2025 specifies protocols, procedures, and managed objects that support IEEE Std 802.3 Clause 4 Media Access Control (MAC) operating in half-duplex while retaining existing functionality and backward compatibility, and remaining a profile of IEEE Std 1588™-2019.

This amendment specifies protocols, procedures, and managed objects that support IEEE Std 802.3 Clause 4 Media Access Control (MAC) operating in half-duplex while retaining existing functionality and backward compatibility, and remaining a profile of IEEE Std 1588-2019.

This amendment addresses errors and omissions in the description of existing functionality.

This standard enables systems to meet the respective jitter, wander, and time-synchronization requirements for time-sensitive applications, including those that involve multiple streams delivered to multiple end stations.

To facilitate the widespread use of packet networks for these applications, synchronization information is one of the components needed at each network element where time-sensitive application data are mapped or demapped or a time-sensitive function is performed.

This standard leverages the work of the IEEE 1588 Working Group by developing the additional specifications needed to address these requirements.

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