B. Noordhof

Hi @B_noor08,

I understand you're experiencing an issue with your FWA515 where Wi-Fi clients are not getting internet access. This can be a frustrating problem, and there are a few common causes we can investigate.

Here's a step-by-step guide to troubleshoot the issue:

1. Check Cellular Internet Status:

   • Log in to the FWA515's web configurator.
   • Navigate to the "Cellular Info" or "Cellular WAN Status" page.
   • Verify that the FWA515 itself has an active internet connection and is not showing "Connection down" or similar. Please take a screenshot of this page.

2. Firmware Version:

   • Ensure your FWA515 is running the latest firmware version. Outdated firmware can sometimes lead to connectivity issues.

3. Cellular Band Settings:

   • Go to "Network Setting" > "Broadband" > "Cellular Band".
   • Try changing the "Preferred Access Technology" from "Auto Switch" to a specific mode like "NR5G-SA / NR5G-NSA / 4G (Auto Switch)" or even forcing it to 4G temporarily to see if stability improves.
   • If you know which 5G bands are supported by your ISP, you can try switching from "Band Auto Selection" to a manually supported band.

4. APN Settings:

   • Verify your APN settings. Ensure they are correctly configured for your mobile broadband provider. You might find these settings under "Network Setting" > "Broadband" > "Mobile Broadband" (or similar).

5. DHCP and IP Passthrough Mode:

   • Check if DHCP is enabled on the FWA515's LAN settings. If clients are not receiving valid IP addresses (e.g., showing 169.x.x.x), it indicates a DHCP failure.
   • If you have enabled "Cellular IP forwarding" (also known as IP Passthrough mode) on the FWA515, devices connected to its Wi-Fi will not have internet access. This mode routes all internet traffic to the first connected LAN device, essentially bypassing the FWA515's NAT function for Wi-Fi clients.

6. Wi-Fi Client-Side Check:

   • Ensure the Wi-Fi security type on your clients matches the FWA515's settings.
   • Try removing the Wi-Fi network profile from a problematic client and reconnecting.

To help me further diagnose the problem, please provide the following information:

• Firmware Version: The current firmware version of your FWA515.

• Screenshots:

  • A screenshot of the "Cellular Info" or "Cellular WAN Status" page from the FWA515's web GUI.
  • A screenshot of the "Network Setting > Broadband > Cellular Band" page.

• Error Messages: Any specific error messages displayed on the FWA515's interface or on the connected Wi-Fi clients.

• Network Topology: A brief description or diagram of how your FWA515 is connected in your network (e.g., is it connected to another router?).
• Zyxel Support Access: Please enable Zyxel Support Access via Help > Support Request in the Nebula console (if your FWA515 is managed by Nebula) and provide your Organization and Site name. This will allow our support team to view your cloud environment configuration directly.