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Re: [coLinux-users] colinux 0.6.1 network patcket loss
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From: sophana <sop...@ya...> - 2004-09-07 08:12:15
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The reason I suspect antivirus software, is that I once tried to install=20 sshd under cygwin. It was always working fine except once. the connection was always=20 reseted. Sometimes, the client was asking the password, but then it was=20 reseted. It took me a very long time (months) when I uninstalled mac=20 afee, and then everything was ok. I'm trying colinux here in my company and the IT guy installed the=20 antivirus. So I cannot uninstall it. Claude LeFrancois (QB/EMC) wrote: >Hi, > >I cannot explain this problem. I am not a designer. I am a simple end us= er. I have simply noticed a networking problem that really looks like the= same than the one you got. I am almost sure the problem I got has someth= ing to do with IP fragmentation. > >My system runs Norton Anti-virus corporate edition. I don`t think the pr= oblem I have is coming from this software. Recently, I got networking pro= blems with Colinux on Windows systems using Firewalls. Any firewall softw= are or packet filtering drivers at the interface level should be configur= ed (or de-activated) to allow proper coLinux networking. One system I did= work with had a Sygate firewall product. Another one had a driver to fil= ter the network traffic. > >Hope this helps, > >Claude LeFran=E7ois=20 > > >-----Original Message----- >From: sophana [mailto:sop...@ya...] >Sent: Monday, September 06, 2004 8:12 AM >To: Claude LeFrancois (QB/EMC) >Subject: Re: [coLinux-users] colinux 0.6.1 network patcket loss > > >how can you explain that when I ping from colinux, I have 0% packet loss= . >when I ping to colinux from the same machine as above, I have about 40%=20 >packet loss. > >this really is a mistery to me. >Do you have an anti virus software? I really suspect these pieces of =20 >shitty software... > >@+ > >Claude LeFrancois (QB/EMC) wrote: > > =20 > >>Hi, >> >>I got a similar problem. Look at the "NFS performance and colinux" thre= ad in this mailing list. I suspect a packet fragmentation/reassembly prob= lem with the bridging network configuration. Try your ping test with larg= e packet size to create fragmentation. The results should be worse. I am = using colinux on Windows 2000 SP4 with ethernet bridging. I use Winpcap 3= .1beta. >> >>My problem concerned the NFS performance over colinux. I realized the s= ystem suffered from packet loss. Enabling "NFS over TCP" in the kernel fi= xed my problem. But, my colinux system still suffers from packet loss whe= n I try the ping test. >> >>Regards, >> >>Claude. >> >>-----Original Message----- >>From: col...@li... >>[mailto:col...@li...]On Behalf Of sophana >>Sent: Thursday, September 02, 2004 10:57 AM >>To: col...@li... >>Subject: [coLinux-users] colinux 0.6.1 network patcket loss >> >> >>Hi >> >>I installed a redhat 7.3 image with colinux 0.6.1 with XP sp1, with tap= =20 >>network (winpcap 3.1 beta) >> >>I use XP native ethernet bridging. >> >>First question: does the tap network driver uses winpcap? >>which version of winpcap is the best? (3.0 or 3.1beta?) >> >>There are some strange network problems: when I ping from colinux to=20 >>another machine, I have 0% packet loss. >>When I ping the other machine to colinux, I have about 20 to 30% packet= =20 >>loss. >>when I do bidirectionnal iperf I obtain about 20mbit from colinux and=20 >>30mbit to colinux (100mbit fast ethernet switch with broadcom bcm5700=20 >>gigabit controller) >>With bidir iperf under windows, I have 20mbit upload and 90 mbit=20 >>download. (90mbit both ways when half duplex) >> >>Does any have have the problem of packet loss? >>Is it a known problem? there is a post on the list indicating problems=20 >>with nfs because of packet loss also? >>Is there a solution? >> >>I suspect macAfee antivirus... (I cannot remove it because of the IT gu= y=20 >>here...) >> >>One more strange problem: top indicates all process usage under system=20 >>usage. the user cpu usage is always 0... >> >>Thanks >>Sophana >> >> >> >>------------------------------------------------------- >>This SF.Net email is sponsored by BEA Weblogic Workshop >>FREE Java Enterprise J2EE developer tools! >>Get your free copy of BEA WebLogic Workshop 8.1 today. >>http://ads.osdn.com/?ad_id=3D5047&alloc_id=3D10808&op=3Dclick >>_______________________________________________ >>coLinux-users mailing list >>coL...@li... >>https://lists.sourceforge.net/lists/listinfo/colinux-users >> >> >>------------------------------------------------------- >>This SF.Net email is sponsored by BEA Weblogic Workshop >>FREE Java Enterprise J2EE developer tools! >>Get your free copy of BEA WebLogic Workshop 8.1 today. >>http://ads.osdn.com/?ad_id=3D5047&alloc_id=3D10808&op=3Dclick >>_______________________________________________ >>coLinux-users mailing list >>coL...@li... >>https://lists.sourceforge.net/lists/listinfo/colinux-users >> >>=20 >> >> =20 >> > > =20 > |
