Path: utzoo!utgpu!water!watmath!clyde!att-cb!att-ih!pacbell!ames!pasteur!ucbvax!maximo.UUCP!mo
From: mo@maximo.UUCP (Mike O'Dell)
Newsgroups: comp.protocols.tcp-ip
Subject: link level crap protection
Message-ID: <8803310739.AA29768@uunet.UU.NET>
Date: 31 Mar 88 00:34:06 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 15

For my two cents...
If the purpose of a SLIP checksum is ONLY to allow SLIP to know
a packet is bad and to discard it, then it is tolerable.
If it does ANYTHING beyond inspect it for damage, trash
the broken packet, and increment a counter, it is wrong.

I understand Rick's experience, but I have also felt that the
protocols really expected to get a Good packet or No packet.
The checksumming is there for the occassion when the No packet
case screws up and the wire delivers junk.

This may not have been spelled-out anywhere, but has been
a religious believe of mine.

	-Mike O'Dell