RFC 7609 · INFORMATIONAL · 2015

IBM's Shared Memory Communications over RDMA Protocol

Overview

RFC 7609, “IBM's Shared Memory Communications over RDMA Protocol”, is an Informational document published in August 2015 by M. Fox, C. Kassimis, J. Stevens. The canonical text is published by the RFC Editor.

Abstract

This document describes IBM's Shared Memory Communications over RDMA (SMC-R) protocol. This protocol provides Remote Direct Memory Access (RDMA) communications to TCP endpoints in a manner that is transparent to socket applications. It further provides for dynamic discovery of partner RDMA capabilities and dynamic setup of RDMA connections, as well as transparent high availability and load balancing when redundant RDMA network paths are available. It maintains many of the traditional TCP/IP qualities of service such as filtering that enterprise users demand, as well as TCP socket semantics such as urgent data.

Abstract as published in the RFC, via rfc-editor.org.

What “Informational” means

Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.

Read this RFC

The canonical text of RFC 7609 is hosted at rfc-editor.org. Available in TXT,HTML.

Other RFCs from 2015

Who Is Online

In total there are 40 users online: 0 registered, 33 guests and 7 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Bingbot Googlebot Other Bot SemrushBot Sogou

Users active in the past 15 minutes. Total registered members: 354