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SonicWall disconnecting

Posted on 2013-12-02
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Last Modified: 2014-04-01
I have a SonicWall TZ170 Standard connected to fiber internet in a business office. A new behavior over the last week: The office loses all internet. Not only does the VPN to the home office go down, but they have no internet access at all.

The only thing that fixes it is resetting the SonicWall (they just unplug it and plug it back in).

Can you guys point me in the right direction for things to check when this happens?
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Question by:SECC_IT
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by:nashim khan
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by:SECC_IT
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Thank you for that. I need to clarify:

This had been working fine for the last couple of years. I have not made any configuration changes at all. This has only been over the last week. The tech guys for the fiber are not seeing any errors on their end.
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by:Infamus
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Have you contacted the manufacture?  It might be the hardware issue.

Also please check the resources (CPU and memory) usage when this occurs.
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by:SECC_IT
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When I logon to mysonicwall, it isn't showing my devices, so if I call them I will end up having to figure all that out. This happened with the Dell changeover.

So, I am simply looking at possible causes for this situation. If there were issues with the power supply, would it be logged?
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by:Infamus
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by:SECC_IT
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Oh boy, fascinating reading. This will keep me up all night. LOL - thank you very much!
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by:Infamus
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LOL


However, I think it is related to hardware issue unless there is any unusual traffic that use up the bandwidth or using high resources.

Resetting firewall will reset the current connections, reset hardware resources and etc...

Therefore, it is hard to tell unless you dig through the log.
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by:SECC_IT
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If I check all the categories in my log section, then that should give me the most complete reports, right? I am having it email them to me.
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by:Infamus
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Yup, you should.
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by:SECC_IT
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My issue seemed to be the power strip that the SW was plugged in to. I bought an APC UPS and installed it on Friday and all was still fine today (Monday). A few more days will confirm if it worked.

When there was a power fluctuation or outage (even a quick one), the SW was not recovering cleanly and we were losing VPN connectivity.
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by:SECC_IT
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Okay this is not true - I installed a new APC UPS and I am still getting disconnects. Nothing shows up in the logs.

My last recourse - replace the SW and see if it still happens. I have a site closing down and can use the SW from there after some minor reconfiguring.
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by:SECC_IT
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I still do not know what the problem was. I replaced the SonicWall yesterday with the same model and am waiting to see if there are problems.

My suspicians are that the CPU or Power Supply are malfunctioning, but I could not find any way to figure this out.

How does one diagnose hardware problems with a SonicWall TZ 170?
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by:SECC_IT
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Apparently there are no SonicWall experts in this arena!

There is definitely a HW issue; I haven't had problems since I replaced it. Please close this topic.
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by:Infamus
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SECC

I've already mentioned twice that this looks like a hardware issue.

I'm glad it is resolved now.
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Yes, but there was no help in how to deal with the hardware issue (besides "call SonicWall"). I don't have support from them and we are not a large corporation with big bucks to spend. I was hoping for help in how to diagnose the actual issue and maybe even fix it. It's easy enough to figure out that it is a hardware issue, but where, how, why, how to fix? It's not resolved; it's a box that will probably end up in the e-cycle pile.
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by:Infamus
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I'm not opposing you closing the ticket.

Sorry, I had some issues and haven't been back for a bit.

But there's nothing really you can do to resolve the hardware failure instead of replacing it.

The reason I asked you to call their support was to get it RMA'ed.  (assuming it is under support or warranty)

I'm glad that it is resolved.
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by:SECC_IT
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Nobody supplied a solution. I gave it to myself. Bah.
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