Xref: utzoo comp.sys.att:11988 comp.protocols.tcp-ip:15276
Path: utzoo!telly!attcan!ram
From: ram@attcan.UUCP (Richard Meesters)
Newsgroups: comp.sys.att,comp.protocols.tcp-ip
Subject: Re: WIN-TCP Problem on 3B2/500
Message-ID: <13907@attcan.UUCP>
Date: 14 Mar 91 14:09:35 GMT
References: <1991Feb25.214152.27244@prism.poly.edu> <1991Feb27.220337.29559@cbnewsj.att.com>
Distribution: na
Organization: AT&T Canada Inc., Toronto
Lines: 32

In article <1991Feb27.220337.29559@cbnewsj.att.com>, duckie@cbnewsj.att.com (john.c.mc millan) writes:
> 	- TCP under WIN/3Br3.2 seems to be argumentative with
> 		earlier releases: rumor has it that as a result
> 		of fixing a long-term bug regarding window-sizing,
> 		negotiation-arguments occasionally erupt between
> 		3.2 systems and earlier ones.  I've seen 99% of
> 		system CPU disappear for 30 minutes running.
> 
> 		It's possible the now-available version has
> 		employed some strategy to counter this, but I'd
> 		confirm that, or convert all your 3B2's AND 386's
> 		at one time!  We did convert, and we're quite
> 		enthusiastic about the result.
> 

I was wondering if the version you were running was the original version I 
obtained from the States.  But this confirms it.  The release version of
WIN TCP 3.2 has a switch in /etc/master.d/tcp caled 42COMPAT (or COMPAT42,
I can't remember which way around) that defaults to the BSD4.2 window size.
If you're going to run a network with 3.2 and 3.01 TCP/IP intermixed, you 
_have_ to set this and rebuild the system (Defaults to unset 42COMPAT = 0).

Regards,

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     Richard A Meesters                |
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