Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!aplcen!unmvax!bbx!stsabq!husain From: husain@stsusa.com Newsgroups: comp.protocols.tcp-ip Subject: IP PDU header cksum algorithm question Message-ID: <6928@stsusa.com> Date: 19 Dec 89 15:44:16 GMT Organization: Siemens Transmission Systems, Albuquerque, NM Lines: 20 Does anyone have the C source code (or algorithm in ENGLISH!) for calculating the checksum for the IP PDU header?? The ISO 8473 annex gives a really wierd description of the cksum algorithm using MODULO 255 arithmetic. HELP! What is that ????? Thanks in advance kbh ===)------------------ "Dr. StrangeCode" ------------------(*************)-------------------------- UUNET: husain@killer.stsusa.com Brain Loaned to: Siemens Transmission Systems 8620 N 22nd Ave, Phx, Az 85029 Voice phone: (602) 395 5222 ------------------(*************)--------------------------