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sonicwall nsa 240 - link consume is excessive

Posted on 2013-06-20
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Last Modified: 2014-03-02
Hi,

I have an internet connection linked to a Sonicwall NSA 240, and few days ago I complained the ISP that our internet was toooooo slow... and his answer was that our consume was on the limit of the bandwidth that we have.

I was checkin all the connections to the sonicwall and could not see anything consuming, but I saw in the Failover LB statistics that the link have the average speed the link speed that we have, but again I went to the connections monitor and cant see what is making my consume exceeds...

Please give me a clue...

Joel Pessoa
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Question by:brithol
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9 Comments
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 39266125
I had a similar experience with a sonicwall and a cable modem. They slow things down by increasing latency (ping times got over 1000ms). By setting a limit below the connection max and enabling bandwidth limiting on the sonicwall I could keep things running better.

That said, I switched to fiber ASAP and never had problems again.
0
 

Author Comment

by:brithol
ID: 39269113
I have put the cable of the Wimax internet link that I have in another computer that was idle and the same scenario was, download consumption very high, and I could ping the gateway with a average of 45ms, could ping external ip addresses like the 4.2.2.2 with 200ms average .
I have made a test with cisco.com address and could ping with 600ms but when tried to open it was veryyyy sloowww  i waited for more than 5 minuts and could not load the page. the google.com gave me the same problem...

So I think that the problem is on the ISP side, I have made the same test above in 3 different pcs. Even I installed the netmeter and the download consumption of the link when I plugged the cable was imediately very high.

I dont know now what I can do to fix these...

Regards
Joel Pessoa
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LVL 39

Expert Comment

by:Aaron Tomosky
ID: 39269384
Did they give you MTU settings? I think sonicwall defaults to 1500 which may be too high
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Author Comment

by:brithol
ID: 39269459
I think that these might not be the problem as i put the cable in my notebook and got the same problem whem connected the cable. I start to think that it might be an attack to our public ip.
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LVL 39

Expert Comment

by:Aaron Tomosky
ID: 39269537
Or you have malware infected computers. Or the link is getting lots of errors and retries. Either way the ISP should be able to give you more detail on the consume.
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Accepted Solution

by:
brithol earned 0 total points
ID: 39269611
I thinkbthat the error is on the isp. Because i have other link of internet on the network as secondary and i have put it as primary and i can use internet with no problem.
Can it be am attack to our ip?
0
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 39269620
Or it could be the load balancing is incorrectly setup. Lots of choices we need to narrow them down.
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Author Comment

by:brithol
ID: 39269683
If the internet cable is on a computer directly connexted it should be working if the problem.is he firewall configuration.
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Author Closing Comment

by:brithol
ID: 39898321
done.
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