Computation of the Internet Checksum

Incremental updating of the internet checksum

The problem is avoided by not assuming this property. Discussion Although this equation appears to work, there are boundary conditions under which it produces a result which differs from the one obtained by checksum computation from scratch. This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements.

Abstract-Aggressive research on gigabit-per-second networks has led to dramatic improvements in network transmission speeds. Index Terms-Data communications, internetworking, packet switching, routing. Based on these discussions, an updated procedure to incrementally compute the standard Internet checksum is developed and presented. This is not a standard but rather, an implementation technique. Kullberg This memo correctly describes the incremental update procedure for use with the standard Internet checksum.

This document specifies an Internet standards

Computation of the Internet Checksum via Incremental Update - Pike Programming Language

This memo provides information for the Internet community. Google Network Working Group A. However, it computes a result for certain cases that differs from the one obtained from scratch one's complement of one's complement sum of the original fields.

Discussion Although this equation appears to

The relevant discussion, though comprehensive, was not complete. Zseby, Fraunhofer Fokus, M.

Compiler mileage may vary. This algorithm was also verified using simulation. Security Considerations Security issues are not discussed in this memo.

The problem is avoided by not

If the checksum is bad, it will remain bad after the update. Distribution of this memo is unlimited. Over the last years, interest for connecting small devices such as sensors to an existing network infrastructure such as the global Internet has steadily increased.

This memo does not specify an Internet standard of any kind. This is due to the way zero is handled in one's complement arithmetic.