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125SuperGuy's avatar
125SuperGuy
Aspirant
Oct 25, 2021

Cannot connect to WNDR4500 (AKA N900)

I have a Netgear WNDR (AKA N900) Wi-Fi router. I recently removed it from service as I am using my Comcast xFinity router CGM4140COM for Wi-Fi. However, I want to use the Netgear router as a repeater to extend the range of the 2.4GHz Wi-Fi to a distant part of my house. I connected the Netgear Internet port to the xFinity router via a Netgear switch in my wiring closet (I have OnQ wiring in my house). I could see the SSID advertised by the N900 on my phone. I logged in to the xFinity router and could see WNDR4500 as a device connected to the xFinity router. The IP address is 10.0.0.122. I was going to follow the instructions in the N900 manual to set it up as a repeater and tried to connect to it via my web browser (tried Chrome and IE) but they say they cannot connect. I tried pinging from a DOS command prompt and I get no reply. I can ping other devices connected to the xFinity router. What am I doing wrong? I tried resetting the N900 using the reset button but still no connection.

 

Thanks,

Don

7 Replies

    • 125SuperGuy's avatar
      125SuperGuy
      Aspirant
      Oct 26, 2021

      The “Connected Devices” table on the xFinity router shows “WNDR4500” with an IP address of 10.0.0.122 but I cannot connect to it with a web browser (trying Chrome and IE) and ping times out. Curiously, the xFinity router says the MAC is 74:44:01:39:57:0B but on the case of the WNDR4500 it is shown as 74:44:01:39:57:0A (ending in "A" instead of "B")

       

      I first used “arp -d 10.0.0.122” to delete the entry from the arp table then tried “arp -s 10.0.0.122 74-44-01-39-57-0a” to assign the MAC which the WNDR4500 thinks is correct but I get “The ARP entry addition failed: Access is denied.” even if I am running the command prompt as administrator. I also tried Powershell with the same result.

       

      For fun I power-cycled the WNDR4500 to get it back in the arp cache but the reassign command still gives me access denied.

       

      Any ideas?

      Don

      • plemans's avatar
        plemans
        Guru
        Oct 26, 2021

        when you tried to factory reset the router, did you push and hold for up to 30 seconds while it was powered on?