Re: Network stops responding

From: Ahsan Khan <>
Date: Tue, 16 May 2000 03:10:09 +0500

Its not squid problem, You must have faced some DOS attack, I also have both
cards and I have faced these messages some times, The solution is firewall
or access list on router or better to stop ICMP on system with the help of
ipchains or what ever os you are using.

With Regards
Ahsan Khan
Sr. System Admin
Internet Division (OneNet)
Sun Communication Pvt. Ltd.

----- Original Message -----
From: "Chris Conn" <>
To: <>
Sent: Monday, May 15, 2000 7:45 PM
Subject: Network stops responding

> Hello,
> Myself as well as another squid user have emailed this list in the past
> that after a variable amount of time the Linux 2.2.x box running squid
> would stop responding and the TCP/IP capability of the machine seemed
> hung. We were both using 3COM 3c905B cards, and I therefore changed to
> an Intel ExpressPro 100 to test to see if the 3com linux driver was at
> fault.
> However, once more the machine running squid was no longer accessible to
> the network. I this time however got logs from the Intel NIC driver:
> May 13 22:16:29 cache kernel: eth0: Transmit timed out: status 0050
> 0090 at 155314080/155314094 command 000c0000.
> May 13 22:16:29 cache kernel: eth0: Trying to restart the transmitter...
> I had hundreds of these in my /var/log/messages. No errors were logged
> to squid.
> I have since changed my switch port to autodetect instead of forcing it
> to 100mbps FD. I hope that the switch is at fault. This problem
> usually does not occur in periods of high load, so I don't believe it is
> a congestion issue.
> Any ideas? Squid 2.3.STABLE-2.
> Thanks in advance,
> Chris
Received on Mon May 15 2000 - 16:08:53 MDT

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