The IESG has approved the following document: - 'Dynamic Link Exchange Protocol (DLEP)' (draft-ietf-manet-dlep-29.txt) as Proposed Standard This document is the product of the Mobile Ad-hoc Networks Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-manet-dlep/ Technical Summary When routing devices rely on modems to effect communications over wireless links, they need timely and accurate knowledge of the characteristics of the link (speed, state, etc.) in order to make routing decisions. In mobile or other environments where these characteristics change frequently, manual configurations or the inference of state through routing or transport protocols does not allow the router to make the best decisions. A bidirectional, event- driven communication channel between the router and the modem is necessary. Working Group Summary Development of the DLEP document has taken quite some time with a few major revisions along the way. DLEP has previously passed WGLC but was then sent back to the WG after an extensive RtgDir review. As a result the document was split into two documents the base specification (this document) and one for a credit windowing extension. There were also some minor technical changes were made, some major editorial changes were done. There is support within the working group on moving this document forward. Previous areas of contention within DLEP were worked out within the working group with no serious objections regarding the final decisions. Document Quality There are multiple existing implementations of the protocol, at least 4 independent ones are known. There is broad support within industry and more implementations are expected once standardized and well as demand on the customer side. One of the aspects to highlight is that the known implementations are all to be deployed in "secured perimeter" applications; in some cases the router and the modem are part of the same chassis. Personnel Document Shepherd is Justin Dean Area Director Alvaro Retana RFC Editor Note Bo Berry has unfortunely passed away. Because he was one of the original authors of this work, the authors/WG decided to keep his name on the document to honor his memory. The Responsible AD (Alvaro Retana) will be making any needed approvals in Bo's name.