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From: guy@sun.uucp (Guy Harris)
Newsgroups: net.unix-wizards
Subject: Re: handshakes
Message-ID: <2718@sun.uucp>
Date: Wed, 28-Aug-85 02:24:12 EDT
Article-I.D.: sun.2718
Posted: Wed Aug 28 02:24:12 1985
Date-Received: Fri, 30-Aug-85 08:38:22 EDT
References: <960@brl-tgr.ARPA>
Organization: Sun Microsystems, Inc.
Lines: 17

> In general, when two machines can't talk to each other, one of the
> following is the cause:
> 
> 1) Braindamaged local modifications
> 2) Incorrect control file setup
> 3) Parity/flow control problems on interconnect circuits/modems
> 4) System kernel buffering/performance problems (i.e. inability to
>    consistently handle input at "high" speed).

And, if the programs doing the talking are "uucico"s, another possibility is

5) Problem with the "g" protocol checksumming code.  Unfortunately, due to
various compiler problems, not all versions of that code correctly implement
the checksum when compiled with all compilers.  I don't have the details at
hand.

	Guy Harris