crazyman Posted July 25, 2008 Share Posted July 25, 2008 Hey guys, Can anyone give me an idea as to what would cause a T1 line to max out and my servers to go nuts at the same time? And yet there's no changes in the CPU activity. The only thing that seems to be effected is the internet speeds. My upload speed (which sucks) is three times as fast as my download speed. I can't tell where the traffic is coming from...or going to. Any thoughts would be great. Thanx, CrazyMan Quote Link to comment Share on other sites More sharing options...
Sparda Posted July 25, 2008 Share Posted July 25, 2008 Open wireshark, look to see what is happening. Quote Link to comment Share on other sites More sharing options...
VaKo Posted July 25, 2008 Share Posted July 25, 2008 If the server has a decent network card a lot of the processing will be off loaded to that, and you won't see that with top. So like Sparda says, break out wireshark or tcpdump. Quote Link to comment Share on other sites More sharing options...
digip Posted July 27, 2008 Share Posted July 27, 2008 Someone else on the network sitting in between you and the network? Any update on what the problem was? Just curious. Quote Link to comment Share on other sites More sharing options...
crazyman Posted July 28, 2008 Author Share Posted July 28, 2008 Open wireshark, look to see what is happening. Thanks, I'll give it a shot. I'm actually starting to suspect one of my laptops. It seems when the network cable is plugged into it, It sucks down bandwidth faster than a fish drinks water. It could be a bad NIC card or something. I'm still testing several theories. Is there a reason, or is there a way that one IP address would be allowed to suck such bandwidth? I used that laptop to check out google and run a speed test, and it was receiving packets like mad. Quote Link to comment Share on other sites More sharing options...
Sparda Posted July 28, 2008 Share Posted July 28, 2008 Is there a reason, or is there a way that one IP address would be allowed to suck such bandwidth? There is nothing that defines that any IP address should have a limit placed upon it unless you implement QoS. Quote Link to comment Share on other sites More sharing options...
Rab Posted July 28, 2008 Share Posted July 28, 2008 windows/steam updating in the background? Quote Link to comment Share on other sites More sharing options...
PileOfMush Posted July 29, 2008 Share Posted July 29, 2008 Web servers? Is Yahoo crawling them to death? Quote Link to comment Share on other sites More sharing options...
ret Posted August 19, 2008 Share Posted August 19, 2008 Are you on a managed switch? take a look at the port stats to see where all the bw is going. If anything else your edge firewall should be able to give you an idea of whats making all the noise. Quote Link to comment Share on other sites More sharing options...
DABIGHURT Posted August 19, 2008 Share Posted August 19, 2008 i actually ran into a problem verry simular to that about a year ago it ended up being a faulty network device that was creating an insane amout of network chatter got rid of the device and problem was solved Quote Link to comment Share on other sites More sharing options...
IceCold Posted August 19, 2008 Share Posted August 19, 2008 a loop in the LAN, maybe? (a cable that goes out and in again in the same router) Quote Link to comment Share on other sites More sharing options...
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