This amendment to IEEE Std 802.1AX-2020 specifies a Unified Modeling Language (UML)-based model and YANG modules for Link Aggregation configuration and status reporting.

This amendment specifies YANG modules that allow configuration and status reporting for systems implementing Link Aggregation, and optionally Distributed Resilient Network Interconnect, based on the capabilities currently specified in clause 7 (management) and Annex D (Management Information Base definitions). This amendment also includes technical and editorial corrections in the description of existing IEEE Std 802.1AX functionality.

Link Aggregation allows the establishment of point-to-point links that have a higher aggregate bandwidth than the individual links that form the aggregation and the use of multiple systems at each end of the aggregation. This allows improved utilization of available links in Bridged local area network (LAN) environments, along with improved resilience in the face of failure of individual links or systems. In applications connecting separately administered networks, the networks are isolated from each other's fault recovery events.