Date: Fri, 19 Jun 1998 19:06:04 -0500 (CDT) From: Joel Ray Holveck <joelh@gnu.org> To: opsys@mail.webspan.net Cc: root@bmccane.maxbaud.net, hackers@FreeBSD.ORG Subject: Re: TweakDUN Message-ID: <199806200006.TAA10769@detlev.UUCP> In-Reply-To: <Pine.BSF.3.95.980619155053.17046C-100000@orion.webspan.net> (message from Open Systems Networking on Fri, 19 Jun 1998 15:58:23 -0400 (EDT)) References: <Pine.BSF.3.95.980619155053.17046C-100000@orion.webspan.net>
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> This doesnt concern you at all. Your running unix so your fine. > Only read on if your interested in the little I know about this, since its > mostly flameage. > ARGH! I hate this. I've only seen this now like oh a BILLION times. > This has nothing to do with FreeBSD it has to do with 95's stack being > BROKEN. PLAIN AND SIMPLE. This has been discussed on ALOT of lists the > first and last that I followed this on was NANOG. I believe karl is on on > NANOG and can give you a better breakdown of the situtation. Basically in > a nutshell windows stack sucks. It has to do with dropping the MTU to 576 > to "increase performance" and "reduce fragmentation" instead of their > stack just working CORRECTLY. I'm so F*CK*NG mad about this. I have two > ISP's here so the poor people of this town dont have a lot of choice, and > ONE of them 2 days after the first article appeared about this *WINDOWS > ONLY* problem decided to LOCK their terminal server dialup interfaces at > *576* DESTROYING any benefit a non windows user could get, just to fix a > windows only problem. Im really disgusted about this. Okay, I'm a bit confused here. How does the broken stack affect this issue? I thought it was a network design issue, since (if I understand correctly) many ISPs' uplinks use an MTU of 576, so any system using an MTU of 1500 (which includes the FreeBSD default) is going to have their packets broken into three packets of 576, 576, and 348 bytes. So, to reduce overhead, the MTU is set to 576 originally (why not 1152 I don't know) and life goes on. Am I mistaken? Best, joelh -- Joel Ray Holveck - joelh@gnu.org - http://www.wp.com/piquan Fourth law of programming: Anything that can go wrong wi sendmail: segmentation violation - core dumped To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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