The IESG has approved the Internet-Draft 'Definitions of Managed Objects for SONET Linear APS Architectures' <draft-ietf-atommib-sonetaps-mib-10.txt> as a Proposed Standard. This document is the product of the AToM MIB Working Group. The IESG contact persons are Thomas Narten and Erik Nordmark. Technical Summary This document defines a portion of the Management Information Base (MIB) used for managing SONET linear Automatic Protection Switching (APS) architectures. Two linear APS architectures are supported, the 1+1 architecture and the 1:n architecture. Working Group Summary There was WG consensus to advance the document. Protocol Quality The document has been reviewed for the IESG by John Flick and Erik Nordmark.