RFC 1146 · HISTORIC · 1990
MON · 27 JUL 2026
TCP alternate checksum options
Overview
RFC 1146, “TCP alternate checksum options”, is a Historic document published in March 1990 by J. Zweig, C. Partridge. It obsoletes RFC 1145. It has been obsoleted by RFC 6247 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This memo is suggests a pair of TCP options to allow use of alternate data checksum algorithms in the TCP header. The use of these options is experimental, and not recommended for production use. Note: This RFC corrects errors introduced in the editing process in RFC 1145.
What “Historic” means
A specification that has been superseded or is otherwise no longer recommended for use.
Read this RFC
The canonical text of RFC 1146 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1990
- RFC 1145 TCP alternate checksum options
- RFC 1147 FYI on a Network Management Tool Catalog: Tools for Monitoring and Debugging TCP/IP Internets and Interconnected Devices
- RFC 1144 Compressing TCP/IP Headers for Low-Speed Serial Links
- RFC 1148 Mapping between X.400 / ISO 10021 and RFC 822
- RFC 1143 The Q Method of Implementing TELNET Option Negotiation
- RFC 1149 Standard for the transmission of IP datagrams on avian carriers
- RFC 1142 OSI IS-IS Intra-domain Routing Protocol
- RFC 1150 FYI on FYI: Introduction to the FYI Notes