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nquintero's avatar
nquintero
Aspirant
Oct 01, 2025

BE9300 – 2.4 GHz Band Stops Working While 5 GHz Stays Stable

I’m having an issue with my Nighthawk BE9300 where the 2.4 GHz band stops working while the 5 GHz and wired connections remain stable. Symptoms:

  • Devices on 2.4 GHz drop offline or cannot reconnect until I reboot or disable/re-enable the 2.4 GHz radio.
  • The SSID stays available, you can connect to it but its "offline"
  • Logs show heavy DHCP churn and repeated “DoS Attack: RST Scan” messages from external IPs.
  • Firmware is up to date. It usually gets resolved with power cycling it. 

Has anyone else experienced this with the BE9300 (or similar BE-series routers)? Didconfig change fix it? Any tips would be appreciated.

not listed

3 Replies

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Oct 01, 2025

    What FW version is loaded on the RS router? 

     

    What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too? 
    Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended. 

     

    Is Protection Engine enabled on the router? If it is present, please disable it.

    Is IPv6 enabled on the router? 

    Is Smart Connect enabled on the router? 

     

    What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and 40 to 48 channel on 5Ghz.

     

    Be sure to disable any MAC Address randomizers on phones and pads while at home:
    NETGEAR Mobile Applications and Android/Apple/Windows Devices FAQ | NETGEAR Communities

     

  • nquintero's avatar
    nquintero
    Aspirant
    Oct 08, 2025

    Thanks for the follow-up, here are the answers to your questions:


    * Firmware: BE9300 running v1.0.1.90 (latest available online)
    * ISP Modem/ONT: AT&T BGW320-505 with IP Passthrough (DHCPS-Fixed) to the BE9300
    * Cable: CAT6A shielded between modem and router
    * Protection Engine: Disabled
    * IPv6: Disabled
    * Smart Connect: Disabled
    * 2.4 GHz: Manual channel 11, 20 MHz width, WPA2-AES
    * 5 GHz: Manual channel 44, WPA2/WPA3 mixed


    Despite this, all 2.4 GHz clients drop offline around 4 a.m. while  SSID stays active. The 5 GHz and wired devices remain connected, and the only recovery is a power cycle.
    At this point, it looks like a firmware-level 2.4 GHz radio hang (same symptoms others have reported on v1.0.1.90). Is a known issue? Would a firmware hotfix or replacement unit be need? This has become a security concern since my cameras and AC units rely on 2.4 GHz connectivity.

Appreciate it

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Oct 08, 2025

      What brand and model# are these 2.4Ghz devices. 

      Do ALL 2.4Ghz devices go off line at this time frame each day? 

      How many 2.4Ghz devices do you have connected? 

      Does channel 1 or 6 show same problem?

       

      Can you test with Smart Connect enabled?

       

      Has a factory reset and setup from scratch been performed since last FW update?