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Forum Discussion

kentcao's avatar
kentcao
Aspirant
Jan 11, 2022

My ORBI disconnects everyday at the same time

I have a RBR40 router and a RBS40 satellite, the firmware has been update to lastest version:2.7.3.22.   After update the firmware I have tried restart and reset the router and satellite already. ...
plemans's avatar
plemans
Guru - Experienced User
Jan 11, 2022

What modem/gateway is the router connected to?

kentcao's avatar
kentcao
Aspirant
Jan 11, 2022

The modem maufacotry is "FIBERHOME" and the model number is HG2821T-U.

 

This modem is Shanghai telecom standard model. At least 1 million user in Shanghai is using this modem

  • plemans's avatar
    plemans
    Guru - Experienced User
    Jan 11, 2022

    that modem has its own integrated routing functions and causes a double nat 

    A double nat happens when you cascade more than 1 router.
    https://kb.netgear.com/30186/What-is-Double-NAT
    Fixes? There’s 3 options but only use 1.
    1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
    2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
    3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
    https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode

    • kentcao's avatar
      kentcao
      Aspirant
      Jan 11, 2022

      thanks for the revert, would you please help to show me how to set up the DMZ?

       

      plemans wrote:

      that modem has its own integrated routing functions and causes a double nat 

      A double nat happens when you cascade more than 1 router.
      https://kb.netgear.com/30186/What-is-Double-NAT
      Fixes? There’s 3 options but only use 1.
      1. Put the modem/gateway in modem only/pass through mode. This disables its routing functions.
      2. Leave the modem/gateway in router mode but put the Netgears IP address into its DMZ. This forwards the data to the netgear. You can either leave the modem/gateway’s wireless enabled or disabled. Just make sure its using a different wifi channel to prevent interference
      3. Put the Netgear into access point mode. This disables its routing functions. Wifi/ethernet still works but it does disable some features.
      https://kb.netgear.com/26765/Which-features-are-disabled-on-my-NETGEAR-router-when-it-is-set-to-AP-Mode