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TZ370 - Strange Behavior; traffic flow becomes inconsistent shortly after install

Good day everyone,


I've been seeming to have issues with the TZ370 units we've been deploying. Shortly after the initial setup, they seem to become unreliable - the WebUI being unreachable seems to be the 'canary in the coal mine', but traffic will end up slowing over time, DNS queries don't get forwarded to public servers...the thing basically becomes unusable, even before I start adding firewall rules or NAT policies or implementing security functions. The problem seems to be exacerbated the more people are on the network, but I am 100% sure it's not a network loop, or an issue with the switches - everything works fine when I switch out the router and make no other changes.

Sometimes it's minutes, sometimes it's hours. A reboot seems to clear it up for a while, but the problem seems to return. I've set the unit up as basic as possible - only defining a WAN and a LAN network with no other changes, same problem.

Ordinarily, I would try a firmware upgrade/downgrade, but there's only an RTM build of the firmware available in the MySonicwall portal.


Hopefully there's a button somewhere I'm missing. Until then, I appreciate whatever information can be provided.

Category: Entry Level Firewalls
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Answers

  • SaravananSaravanan Moderator

    Hi @PROSYSCON,

    Thank you for visiting SonicWall Community.

    If you are exhibiting the sluggish issue with firewall GUI and for traffic passing via the firewall with only LAN and WAN configured, try performing a factory reset of your TZ 370.

    I have also verified on our end and confirmed that no such issues are reported so far. If still the issue persists, I would recommend you to open a support case with our support team and take necessary help on this matter.


    Regards

    Saravanan V

    Technical Support Advisor - Premier Services

    Professional Services

  • TKWITSTKWITS Cybersecurity Overlord ✭✭✭

    Have they not released 7.0.0.906 for the 370 yet? The first releases of OS7 are buggy as hell. I'd wait to deploy with a new release if you can otherwise youre stuck.

  • RobWRobW Newbie ✭
    edited March 25

    Welcome to SonicOS7! Take a seat, the issue's are only beginning. This week I already had to take a TZ270 out of service for having too many similar issue's directly affecting the clients services.

    Reach out to their support to see if they have a Hotfix firmware available. They sent me one that really helped out.

  • ProsysconProsyscon Newbie ✭

    @TKWITS , the 906 release for the 370 is the initial release, and is the version on which I'm having the issues.

    @Saravanan , it sounds like RobW has experienced similar issues to what I found. If you're able to point me in the direction of a hotfix firmware for the 370, I'd be most appreciative of not having to go through the support ticket rigamarole =).


    Thanks!!

  • DIBKDIBK Newbie ✭

    We rolled this out to a client and we're starting to find issues little by little.

    In particular, we have a client with issues with the WiFi calling.

    So, I went about following the instructions from Sonicwall: https://www.sonicwall.com/support/knowledge-base/unable-to-call-via-apple-wifi-calling/170505913456806/

    I had to open a ticket to find out the new diag page, which FYI: https://<MGMT-IP>/sonicui/7/m/mgmt/settings/diag

    However, now, the firewall will not accept the change made via the diag page.

    We recommended this device to our client. When can we expect at least a Beta to address these issues. The device is still on the Initial Release despite all of these issues.


  • ProsysconProsyscon Newbie ✭

    @DIBK , glad it's not just us.


    So, the GA release of the 1262 firmware was released on my birthday...and I thought it was a birthday gift to me to have stable TZ370s!

    But alas, there's zero consistency....


    Client #1 has been perfectly fine on the RTM build. I'm not touching a blessed thing there.

    Client #2 was having the issue, but I got a beta release in late March from support that solve their issue. Yay.

    Client #3 was having the issue, and the issue was somewhat addressed with the beta build, but the RTM build seemed to stabilize their environment. Yay.

    Client #4 continues to have the issue, despite the latest firmware, to the point where we put an old NSA220 in place just to keep their internet stable. Their TZ370 is sitting on my desk, waiting for support to parse my 'show run' command and see if there's anything they can see that would cause this.

    Client #5 has their 370 on the side waiting for me to be comfortable with the results of client #4.

    Client #6, #7 (a 270), and our internal TZ470 are all camping out in boxes, untouched, because I'm too scared to upgrade.

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