Date: Mon, 4 Mar 2002 09:14:05 +0100 From: "Carroll, D. (Danny)" <Danny.Carroll@mail.ing.nl> To: <freebsd-ipfw@freebsd.org> Subject: Dummynet, ipfw and ADSL bandwidth throttling.... Message-ID: <AC51C3ABF0F2C044A774557F83AA67A9316E65@citsnl007b.europe.intranet>
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[-- Attachment #1 --] I have an adsl connection serving my home lan. I've got my freeBSD firewall working for me quite well and my NAT/Firewalling rules work just the way I like them. I do however have one issue with ADSL itself which I hope can be rectified with BSD. The adsl connection I have is 512kb down and 64kb up. The problem starts when I try and upload at the full 64kb. My Downloads crawl to a halt. I am not technical (At least not with ATM etc...) but I have read that the problem lies with the fact that if you are using all the upload bandwidth, then a download cannot send control packets fast enough and hence it slows down as well.... The fix that has been suggested is that you limit your bandwidth with software so that the upload only uses 90% of the link. This solution would work well if you have an FTP server or something you can manually set the upload limit to, but what I'd like to do is use BSD to enforce limits a little smarter. Basically I am wondering if DummyNet has a facility to limit per IP or Protocol. Perhaps someone has seen this problem before and knows of a better way to solve it.? -D ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. ----------------------------------------------------------------- [-- Attachment #2 --] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.0.4712.0"> <TITLE>Dummynet, ipfw and ADSL bandwidth throttling....</TITLE> </HEAD> <BODY> <!-- Converted from text/rtf format --> <P><FONT SIZE=2 FACE="Arial">I have an adsl connection serving my home lan.</FONT> </P> <P><FONT SIZE=2 FACE="Arial">I've got my freeBSD firewall working for me quite well and my NAT/Firewalling rules work just the way I like them.</FONT> <BR><FONT SIZE=2 FACE="Arial">I do however have one issue with ADSL itself which I hope can be rectified with BSD.</FONT> </P> <P><FONT SIZE=2 FACE="Arial">The adsl connection I have is 512kb down and 64kb up. The problem starts when I try and upload at the full 64kb.</FONT> <BR><FONT SIZE=2 FACE="Arial">My Downloads crawl to a halt.</FONT> </P> <P><FONT SIZE=2 FACE="Arial">I am not technical (At least not with ATM etc...) but I have read that the problem lies with the fact that if you are using all the upload bandwidth, then a download cannot send control packets fast enough and hence it slows down as well....</FONT></P> <P><FONT SIZE=2 FACE="Arial">The fix that has been suggested is that you limit your bandwidth with software so that the upload only uses 90% of the link.</FONT></P> <P><FONT SIZE=2 FACE="Arial">This solution would work well if you have an FTP server or something you can manually set the upload limit to, but what I'd like to do is use BSD to enforce limits a little smarter.</FONT></P> <P><FONT SIZE=2 FACE="Arial">Basically I am wondering if DummyNet has a facility to limit per IP or Protocol. Perhaps someone has seen this problem before and knows of a better way to solve it.?</FONT></P> <P><FONT SIZE=2 FACE="Arial">-D</FONT> </P> -----------------------------------------------------------------<BR>ATTENTION:<BR>The information in this electronic mail message is private and<BR>confidential, and only intended for the addressee. Should you<BR>receive this message by mistake, you are hereby notified that<BR>any disclosure, reproduction, distribution or use of this<BR>message is strictly prohibited. Please inform the sender by<BR>reply transmission and delete the message without copying or<BR>opening it.<BR><BR>Messages and attachments are scanned for all viruses known.<BR>If this message contains password-protected attachments, the<BR>files have NOT been scanned for viruses by the ING mail domain.<BR>Always scan attachments before opening them.<BR>-----------------------------------------------------------------</BODY></HTML>
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