From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stef Coene Date: Sun, 17 Aug 2003 18:18:58 +0000 Subject: Re: [LARTC] stops receiving traffic Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org On Sunday 17 August 2003 08:25, Jay Lee wrote: >
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I have some questions. Hope someone knows what is happening. I'm > doing a project for my graduation related to traffic shaping and this > server will be installed in our campus. I've installed Redhat 9 > (athlon xp1800, 512Mb ram, 2 intel 10/100 ethernet cards). I'm > trying to limit bandwidth usage for 4000+ PCs. Aim is to guarantee 14kbit > for each pc and ceil rate to 128kbit and i've used hashkey with 4000 > classes.

 

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When I start to route my traffic to the shaping server, it runs fine and > all shaping rules work for 5~10 mins but shortly the server stops > receving packets. I found out that my 3com cards had high rx overrun > and I've changed to intel cards. But again, after 5~10 mins, it stops to > receive nor transmit packets. There was no rx overrun but little tx overrun > this time. I've tested again with no cpu cycle saving and higher interrupts > for the intel ethernet cards but the result was same and nothing was > recorded in syslog.

 

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Interesting thing is that when the server stops to receive traffic, > other networks can not ping the shaping server. but when the shaping server > can ping other servers or networks. Also if server A pings the shaping > server, server A gets ping reply only when the shaping server pings > server A. which means network cards did not die. Is there any default > firewall setting in redhat 9 kernel? I've tried many times with rp_filter > off and on but the result was same.

 

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In addition, outgoing traffic does not go through the shaping server. > Only incoming traffic is routed to the shaping server statically from > router. Bandwidth is 30Mbps.


Download href="http://g.msn.com/8HMEENNZ/2740??PS=">MSN Messenger - talk to > family and friends overseas! Can you resend your mail in plain text only? Thx. Stef -- stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/