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Re: Network Stalls



* Leigh (leigh@isomedia.com) [010918 16:07]:
> 
> Hello,
> I posted a message in here last night about network stalls and direcpc running
> on a win98 machine with winroute as the proxy.
>  
> I believe this is because of the Direcpc satellite and latency.  The local
> network has no problems.  Here is what will happen.
>  
> *NOTE* upto last week Redhat was on this same sys for over a year with no
> problems.
>  
> I start a download of 100K or larger and the network will stall, however it is
> only that session that stalls,  I can in another terminal continue to surf. I
> am currently doing a steady ping on a system on my network while stalled in
> dselect to only and update.  If anyone can help with this please let me know,
> this is driving me crazy!

I'm unfamiliar with this issue but from readings on this list, but this
might be an ECN issue. search the archives for more info/explanation on
it. The quick answer is that you want to turn off ecn with a command
like this (as root):

echo 0 > /proc/sys/net/ipv4/tcp_ecn

If that works, make the change permanent by adding that line to
/etc/init.d/networking, like this:

case "$1" in
    start)
        doopt spoofprotect yes
        doopt syncookies no
        doopt ip_forward no
        echo 0 > /proc/sys/net/ipv4/tcp_ecn

        echo -n "Configuring network interfaces: "
        ifup -a
        echo "done."
        ;;

If the first command doesn't work in the first place, then I'm afraid I
can't help you further right now; you'll have to wait for someone more
knowledgeable to respond.

-- 
Vineet                                   http://www.anti-dmca.org
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