NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

BigMike6's avatar
BigMike6
Aspirant
Jun 29, 2021

WNR3500LV2 won't save unchecked "Use Router as DHCP Server" setting.

I'm trying to turn off he DNS server on my WNR3500L v2 router. Firmware is V1.2.0.66_50.0.106.

I can uncheck the "Use Router as DHCP Server" setting in Lan Setup, but when I click "Apply" it comes back checked when the screen comes back.

4 Replies


  • BigMike6 wrote:

    I'm trying to turn off he DNS server on my WNR3500L v2 router.

     


    Can we start with why you want to do that? And what is the modem, if there is one, in  front of this router?

     

    First, though, the WNR3500L is an old (2009) Router. It has very little in common with the Mobile Routers covered in this bit of the community.

     

    You have posted your message in the section of this community given over to Mobile Routers, Hotspots & Modems. (This is easily done, given Netgear's complicated community structure.)

    Many questions apply to different types of device, so there may be useful responses here, but you might get more help, and find earlier questions and answers specific to your device, in the appropriate section for your hardware. That's probably here:

    General WiFi Routers (Non-Nighthawk) - NETGEAR Communities

    I will ask the Netgear moderator to move your message.

    In the meantime you could visit the support pages:

    Support | NETGEAR

    Feed in your model number and check the documentation for your hardware. Look at the label on the device for the model number.

    You may have done this already. I can't tell from your message.

    I mention it because Netgear stopped supplying printed manuals and CD versions some years ago and people sometimes miss the downloads.

     

  • > [...] WNR3500L v2 router. [...]

     

       Connected to what?

     

    > I'm trying to turn off he DNS server [...]

     

       Why? Is there some actual problem which you are trying to solve?

     

    > I can uncheck the "Use Router as DHCP Server" setting in Lan Setup,
    > [...]

     

       "DNS" and "DHCP" are spelled differently for a reason.  Is there some
    actual problem which you are trying to solve?

     

    > [...] when I click "Apply" it comes back checked when the screen comes
    > back.

     

       Could be a firmware defect, but it might help to know what you're
    trying to do, and why.  If, for example, you had configured the thing as
    a wireless access point, then some of these settings wouldn't matter,
    whatever you did with them.

    • BigMike6's avatar
      BigMike6
      Aspirant

      I apologize for the "DNS" brain fart. I meant DHCP. Let me explain what I'm trying to do.

      I'm trying to connect an old router to my main router, an R6120 to use as a separate network for my smart home devices. I wire direct to a laptop and enter the setup. The first step, which I didn't mention the first time, is I'm trying to change the ip and and then disable DHCP on the old router. I've done both at the same time and both separately. The changes just don't take. Example:

      Change IP from the stock 192.168.1.1 to 192.168.1.2.

      Unheck DHCP server.

      I hit apply and it goes through it's reboot or whatever it does.

      It always comes back up with the factory IP no changes to DHCP. 

      The first thing I did was update to the latest firmware and I'm begining to think that was a mistake. I dug through my garage and found an old WPN824v2 and was able to change the ip on it, UNTIL I updated the firmware on it! Now it won't accept those changes either. 

      Both routers will still accept login password changes as well as SSID and wireless pwd changes. 

      Sounds like firmware but ???? I tried rolling back the firmware on the WPN824, but maybe I didn't go back far enough.

      I realize that I'm now talking about 2 different routers, but it seems like the same problem. We can just concentrate on the WNR3500 if you'd like.

       

       

      • antinode's avatar
        antinode
        Guru

        > I'm trying to connect an old router to my main router, an R6120 to use
        > as a separate network for my smart home devices. [...]

         

           Define "separate network".  What benefit to you expect to get from
        doing this (whatever it means)?

         

        > [...] I wire direct to a laptop and enter the setup. [...]

         

           "wire" _what_ "direct to a laptop and enter the setup" of _what_?
        (Hint: If a device has different types of ports, then "connected to
        device" is not enough detail.)

         

        > Change IP from the stock 192.168.1.1 to 192.168.1.2.

         

           And is the computer from which you're doing this already occupying
        "192.168.1.2"?  There are limits to just how whimsical you can get when
        assigning IP addresses to devices.

         

           Let's forget, for a moment, what you've done, and consider what you
        might want to do.


           If you configure some old router as a wireless access point, which
        would involve disabling its DHCP server, and attach it to your
        main-router LAN, then you'd still have one big LAN, and all your devices
        could talk to each other.  So, nothing very "separate" about the devices
        which are connected to the old_router-as-WAP.

         

           If you configure some old router as a full-function router, and
        attach it to your main-router LAN, _and_ disable its DHCP server, then
        there would be no DHCP server on the ("separate") old-router LAN, which
        I'd expect to cause problems for typical devices.

         

           According to its User Manual, the WNR3500Lv2 is old enough that it
        lacks a convenient WAP mode option.  If you want to configure it as a
        WAP, then you might see, for example:

         

              https://community.netgear.com/t5/x/x/m-p/1463500


           That's written for a Netgear C6300-as-WAP, but the steps are about the
        same for any other router (any make/model) which lacks a one-step WAP
        option.  If the router which you're reconfiguring has a WAN/Internet
        Ethernet port (unlike a Cxxxx), then leave it unconnected.

         

        > [...] old WPN824v2 and was able to change the ip on it, UNTIL I
        > updated the firmware on it! [...]

         

           With my weak psychic powers, I don't know what the old firmware was,
        or what the new firmware is.  But I wouldn't expect it to matter very
        much.