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Re: [Openvpn-users] TCP over TCP Tunnel - Packet lost


  • Subject: Re: [Openvpn-users] TCP over TCP Tunnel - Packet lost
  • From: Alon Bar-Lev <alon.barlev@xxxxxxxxx>
  • Date: Sat, 22 Jul 2006 13:11:30 +0300

Michael Teske wrote:
> Alon Bar-Lev wrote:
>> Michael Teske wrote:
>>> I had a look at
>>> http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.17
>>> But there are so many TCP-related changes, I don't see a single
>>> candidate which could have caused our problem.
>>>
>>> Greetings,
>>>     Michael
>>>
>> Can you please test with the following:
>> echo 4096 87380 174760 > /proc/sys/net/ipv4/tcp_rmem
>>
>> Then disable/enable interfaces.
>>
>> It seems to make a difference to me... Although I still have
>> retransmissions.
> 
> Hmm, it looks like this crashed the server, at least I don't get any
> connection anymore, unfortunately I don't have permissions to look what
> really happenend.
> For me, the best solution was to switch to udp anyway. But not all of my
> company can, for various reasons...

Crash?!?!
Strange... It should not crash... And if you don't have
permissions, how could you set this parameter?

I've tried UDP too... But TCP session over UDP also had segment
lost just like TCP over TCP... So it did not provide the solution.

Best Regards,
Alon Bar-Lev.
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