RFC 5827 · EXPERIMENTAL · 2010

Early Retransmit for TCP and Stream Control Transmission Protocol

Overview

RFC 5827, “Early Retransmit for TCP and Stream Control Transmission Protocol”, is an Experimental document published in April 2010 by M. Allman, K. Avrachenkov, U. Ayesta, J. Blanton, P. Hurtig. The canonical text is published by the RFC Editor.

Abstract

This document proposes a new mechanism for TCP and Stream Control Transmission Protocol (SCTP) that can be used to recover lost segments when a connection's congestion window is small. The "Early Retransmit" mechanism allows the transport to reduce, in certain special circumstances, the number of duplicate acknowledgments required to trigger a fast retransmission. This allows the transport to use fast retransmit to recover segment losses that would otherwise require a lengthy retransmission timeout. [STANDARDS-TRACK]

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

What “Experimental” means

Describes a specification that is part of a research or development effort, published so the community can gain experience with it.

Read this RFC

The canonical text of RFC 5827 is hosted at rfc-editor.org. Available in TXT,HTML.

Other RFCs from 2010

Who Is Online

In total there are 232 users online: 0 registered, 226 guests and 6 bots.

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

Bots: Applebot Facebook Googlebot Other Bot Other Spider SemrushBot

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