Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!PESCADERO.STANFORD.EDU!deering
From: deering@PESCADERO.STANFORD.EDU (Steve Deering)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: more on Fletcher
Message-ID: <89.12.04.1254.363@pescadero.stanford.edu>
Date: 4 Dec 89 20:54:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 13

Craig,

I don't know how serious your proposal for a TCP Alternate Checksum
Option is, but I would hope that any real proposal would allow for:

	- a checksum longer than 16 bits (for more robust error detection)
	- a checksum at the end of the packet (for pipelined interfaces)

If it is important to maintain the current size of the TCP header, it
might be reasonable to say that checksums longer than 16 bits *have* to
go at the end of the packet.

Steve