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Forum Discussion
Nighthawk CAX30 AX2700 connection issues with DHCP and IP address reservations
I've been experiencing severe connection issues with my Nighthawk CAX30 cable modem router. If I go into my device LAN setup under advanced settings and attempt to make any DHCP IP address reservations for my devices, every single device is then unable to connect to the CAX30 after it has rebooted. This goes for both wired and wireless connections! Netgear also sent me a replacement after troubleshooting with both my ISP Comcast and Netgear support for 2+ hours over the phone. All other settings I change take effect without any issues! But as soon as I go into my advanced LAN setup and start adding IP address reservations for my devices, my CAX30 will not let anything connect (again, wired and wireless). I have even gone so far as to get on every single device, remove the network from device memory, manually reset network data, and fully reboot each one. Still won't let a single thing connect to it with fresh network settings! SOMETIMES a device will connect to the wireless SSID, but the network status will say it is connected without internet access just to disconnect again shortly after. If I'm lucky enough to get my Dell XPS laptop connected to my SSID long enough to revert DHCP settings and remove the address reservations, everything can connect normally again after settings are applied and the CAX30 reboots. This issue was present in both the original CAX30 I had purchased as well as the replacement that Netgear provided.
Here is all of my relevant information:
- Model Nighthawk CAX30 AX2700 cable modem router
- Hardware version 1.01
- Firmware version 1.4.10.8
- Cable firmware version 1.04.10
- CM certificate installed
- Windows 10 Home Version 21H1
- OS Build 19043.1081
I saw somewhere that this bug can be avoided by using only letters and numbers in your SSID password, but my PW has only always been letters/numbers and the issue still persists. I would GREATLY appreciate any help and feedback that anyone may have. Thank you!
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I am having a similar problem with rebooting of my router causing all sorts of issues with being able to get all devices back online with IP addresses to obtain an internet connection. I would have to disconnect all devices power in my next work and then bring each one of them back on line one at a time to everything working again. This is a complete annoyance if I have to do this everytime to get my network back and running. I ended up putting a battery backup on my router so I hopefully never have to reboot my router but this is an unacceptable problem and I dont know if its some underlying issue with 40 devices hitting my router all at once and some combinations of IP requests are causing the router to just stop providing IP addresses. If you know of any fix for this condition please let me know.
Hi wildwilly,
Good day!
Welcome to NETGEAR Community!
Thank you for reaching out. May we know who is your internet provider? When did the issue start? What is the current firmware of your Netgear modem?
Please do not hesitate to let me know if you need further assistance.
Regards,
Oliver
Community Team
- I know you're addressing someone else's comment, but can I get a little help with my issue too? I created this post MONTHS ago, and have yet to get a response from Netgear. My issue has not gone away, and the CAX30 is in desperate need of a firmware update.
I don't know if this is related, but I have had the very similar problem. Not only that, the router was loading pages very slowly.
Here is what I did:
NTP setup, changed the timezone to the correct timezone. It was set to completely different TZ.
Updated NTP server to pool.ntp.org.
Once applyed, router become very responsive and DHCP issue disappeared.
