Dynamic Link Exchange Protocol (DLEP) (RFC8175)
Original Publication Date: 2017-Jun-01
Included in the Prior Art Database: 2017-Jun-21
Internet Society Requests For Comment (RFCs)
S. Ratliff: AUTHOR [+5]
There exist today a collection of modem devices that control links of variable data rate and quality. Examples of these types of links include line-of-sight (LOS) terrestrial radios, satellite terminals, and broadband modems. Fluctuations in speed and quality of these links can occur due to configuration, or on a moment-to-moment basis, due to physical phenomena like multipath interference, obstructions, rain fade, etc. It is also quite possible that link quality and data rate vary with respect to individual destinations on a link and with the type of traffic being sent. As an example, consider the case of an IEEE 802.11 access point serving two associated laptop computers. In this environment, the answer to the question "What is the data rate on the 802.11 link?" is "It depends on which associated laptop we're talking about and on what kind of traffic is being sent." While the first laptop, being physically close to the access
Internet Engineering Task Force (IETF) S. Ratliff Request for Comments: 8175 VT iDirect Category: Standards Track S. Jury ISSN: 2070-1721 Cisco Systems D. Satterwhite Broadcom R. Taylor Airbus Defence & Space B. Berry June 2017
Dynamic Link Exchange Protocol (DLEP)
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. This document introduces a new protocol called the Dynamic Link Exchange Protocol (DLEP), which provides a bidirectional, event-driven communication channel between the router and the modem to facilitate communication of changing link characteristics.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc8175.
Ratliff, et al. Standards Track [Page 1]
RFC 8175 Dynamic Link Exchange Protocol (DLEP) June 2017
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