RFC 1141 · INFORMATIONAL · 1990
WED · 29 JUL 2026
Incremental updating of the Internet checksum
Overview
RFC 1141, “Incremental updating of the Internet checksum”, is an Informational document published in January 1990 by T. Mallory, A. Kullberg. It updates RFC 1071. It has since been updated by RFC 1624. The canonical text is published by the RFC Editor.
Abstract
This memo correctly describes the incremental update procedure for use with the standard Internet checksum. It is intended to replace the description of Incremental Update in RFC 1071. This is not a standard but rather, an implementation technique.
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 1141 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1990
- RFC 1140 IAB official protocol standards
- RFC 1142 OSI IS-IS Intra-domain Routing Protocol
- RFC 1139 Echo function for ISO 8473
- RFC 1143 The Q Method of Implementing TELNET Option Negotiation
- RFC 1144 Compressing TCP/IP Headers for Low-Speed Serial Links
- RFC 1145 TCP alternate checksum options
- RFC 1146 TCP alternate checksum options
- RFC 1147 FYI on a Network Management Tool Catalog: Tools for Monitoring and Debugging TCP/IP Internets and Interconnected Devices