RFC 889 · INFORMATIONAL · 1983
SUN · 14 JUN 2026
Internet Delay Experiments
Overview
RFC 889, “Internet Delay Experiments”, is an Informational document published in December 1983 by D.L. Mills. The canonical text is published by the RFC Editor.
Abstract
This memo reports on some measurements of round-trip times in the Internet and suggests some possible improvements to the TCP retransmission timeout calculation. This memo is both a status report on the Internet and advice to TCP implementers.
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 889 is hosted at rfc-editor.org. Available in TXT,HTML.
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