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sonicwall nsa 240 - link consume is excessive

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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brithol
Asked:
brithol
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1 Solution
 
Aaron TomoskyTechnology ConsultantCommented:
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.
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britholAuthor Commented:
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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Aaron TomoskyTechnology ConsultantCommented:
Did they give you MTU settings? I think sonicwall defaults to 1500 which may be too high
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britholAuthor Commented:
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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Aaron TomoskyTechnology ConsultantCommented:
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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britholAuthor Commented:
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?
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Aaron TomoskyTechnology ConsultantCommented:
Or it could be the load balancing is incorrectly setup. Lots of choices we need to narrow them down.
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britholAuthor Commented:
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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britholAuthor Commented:
done.
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