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FVS336G v2 Very slow throughput
NETGEAR ProSafe™ Gigabit Dual WAN SSL VPN Firewall FVS336Gv2
Firmware Version: 4.3.3-5
Windows 10
Cable modem (Charter/Spectrum)
Cisco DPC3216 DOCSIS 3.0 2-PORT Voice Modem
__________________________________________
I began seeing DNS messages.
DNS address could not be found.
ERR_NAME_NOT_RESOLVED
DNS_PROBE_FINISHED_NXDOMAIN
The error appears for a few seconds before continuing on to that URL.
I'm using network settings provided by ISP.
I tried using FreeDNS and Google DNS with no improvement.
I noticed a new firmware upgrade so I upgraded to Firmware Version 4.3.3-6. Since doing the upgrade the throughtput of the modem is less than half of what it was.
Wired connection to the modem shows 66+ Mbps with no DNS errors.
Going through the FVS336Gv2 (wired) is 24 Mbps with the old DNS errors.
Troubleshooting:
1) factory reset
2) back to Firmware 4.3.3-5
3) configured settings
Same result: throughput approx 26Mbps with DNS errors.
I'm stumpted. Any advice will be apprectiated.
thanks
Terry
7 Replies
Hi WyoDog,
Welcome to the community! :)
Since you have reverted the firmware of the FVS336Gv2 back to v4.3.3-5 were you able to perform a factory reset on it, then reconfigure the settings from scratch? It is best to perform a factory reset after upgrading or downgrading the firmware then start from scratch in order to start clean using the firmware uploaded.
If ever you are always using the WAN 1 port of the FVS336Gv2, I suggest you to try using its WAN 2 port in order to isolate the problem. Then, check if same problem will occur.
Regards,
DaneA
NETGEAR Community Team
DaneA
I will try both and report back. I hadn't thought of either fix.
Thanks
DaneA
I apologize for not getting right back on this thread, I have been out of town (medical).
No Joy! I first switched to LanB. Same result. So that eliminates that as a source. I rolled back to the previous version, from Firmware Version 4.3.3-6, did a full reset, same result. I was now at Firmware 4.3.3-5. I went back to the previous version (before 4.3.3-5), reset and same result. It appears to me that the router isn't talking well with DNS servers. I called my IPS Charter/Spectrum to verify addresses and have them reset my cable modem, which they did. I got very little else from them (other than some attitude). It's the old, 'it's not our problem, it has to be your equipment, contact your hardware support group. So here I am.
Terry
Thanks for the update. Let us try this. On the web-GUI of the FVS336Gv2, go to Security > Firewall > Attack Checks. Make sure to uncheck the boxes that says "Block TCP flood" and Block UDP flood." Observe if it helps.
Refer to the image below as reference:
Regards,
DaneA
NETGEAR Community Team
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