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  1.    31 Jul 2017 #1
    Join Date : Jul 2017
    Posts : 14
    Windows 10

    Wifi Devices connecting to the wrong subnet


    I just installed a Dlink DIR-890L and it is setup to assign devices to the range 192.168.1.1 to .254

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    However, it seems that when most of my devices connect they are ending up with an IP address that is 192.168.0.something.

    This is causing the device to be able to connect to the router but not to the Internet. It has happened with my laptop, 2 cell phones and wireless thermostat. I have no idea why. Right now I am going into each device and changing the default IP and then manually changing its gateway to 192.168.1.1 (it's also coming up wrong)

    I have no idea why this is happening.

    I see this in the router settings but there is no where to change the default gateway but I'm not sure if I need to and so far I have been changing it to 192.168.1.1 on all the devices that I have to manually configure/

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    Any suggestions?
      My ComputerSystem Spec
  2.    01 Aug 2017 #2
    Join Date : Oct 2016
    Caledon, Ontario, Canada
    Posts : 4,084
    Windows 10 Pro Build 1703

    Hi superwindow.

    I would change the start of range to 10 or even 25. I leave a few in case I have to set a printer to a static address.

    Once change you must save. As soon as you save, if it took, according to your manual, you will become disconnected.

    I would reboot PC and reconnect.


    Ken

    Edit: Obviously there are lots of panels before this. Have you confirmed their entries?
      My ComputerSystem Spec
  3.    01 Aug 2017 #3
    Join Date : Jul 2017
    Posts : 14
    Windows 10
    Thread Starter

    I think after some reading I have found the cluprit, I just don't know how to fix it. In the bottom picture of my first post I see my IP address is 192.168.0.1 this is in the DHCP table of my ISP's modem/router, but I think what I want here is my external IP.

    So my guess is I need to change a setting in the ISP modem but I am not sure what I want to change? Do I turn DHCP off, or go to bridge mode?

    Here is the settings in the ISP modem/router

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      My ComputerSystem Spec
  4.    01 Aug 2017 #4
    Join Date : Aug 2016
    Posts : 82
    Windows 7-pro-sp1 and windows 10-pro-1703

    Your last picture says that you're looking on the LAN side of the modem/router.
    Your external IP will be on the WAN side. Just change the tab on top. It will show IP that your ISP gave you.

    Your other questions aren't too clear at his point because you did not describe the wiring. Which port on the new router (LAN or WAN) is connected to which port of the modem?
      My ComputerSystem Spec
  5.    01 Aug 2017 #5
    Join Date : Jul 2016
    Crewe Cheshire
    Posts : 1,462
    windows 10

    If things are getting the wrong ipi ts being picked up from another dhcp server ie the modem thats whats giving your problem. What logs into the isp the modem or router in most cases the modem just connects but the router logs in
      My ComputerSystem Spec
  6.    01 Aug 2017 #6
    Join Date : Jul 2017
    Posts : 14
    Windows 10
    Thread Starter

    Got it figured out, I called my ISP and they remotely changed their modem/router to bridge mode, so far so good.
      My ComputerSystem Spec
  7.    02 Aug 2017 #7
    Join Date : Jun 2014
    Posts : 546
    Microsoft Windows 10 Pro 64-bit

    Do you have the ISP's router connected to the WAN side of your Dlink, If the pictures I seen on Google are correct the WAN side of the D'Link looks yellow, This is important even now as your ISP's router is in bridge mode.

    All your other devices connect to the LAN side of the Dlink which are all black.
      My ComputerSystem Spec
  8.    02 Aug 2017 #8
    Join Date : Jul 2017
    Posts : 14
    Windows 10
    Thread Starter

    OK thought I had it figured out, but I reset TWO computers that are hard wired to the router and both got assigned an IP address that is 192.168.0.XXX

    I have no idea how this can be happening. Only think I can think of is that I changed dlink from being in the 192.168.0.XXX range to the 192.168.1.XXX range and maybe there is a glitch in their firmware.

    The router isn't actually in bridge mode, but IP PASSTHROUGH mode, and it is passed to the MAC Address of my dlink router, not sure what else I can do??

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    The IP Address of router is now showing as my external IP address so the passthrough is working correctly.

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      My ComputerSystem Spec
  9.    02 Aug 2017 #9
    Join Date : Jun 2014
    Posts : 546
    Microsoft Windows 10 Pro 64-bit

    As mentioned above in an earlier post do not set your DHCP from 1.1 to 1.254 if you don't have many devices set it from 1.100 to 1.199

    Also as mentioned above have you pressed the save button after you made changes to the Dlink

    Also did you check if your lan cables are connected properly as was mentioned above.

    It's also a good idea to reboot your Dlink router after making major changes.

    You can reset your lan card by following this tutorial written by Brink.
    Reset Network Adapters in Windows 10 Windows 10 Network Sharing Tutorials

    I would also see if checking Always broadcast located in your DHCP server settings.

    If all that does not work Reset your Dlink back to factory defaults, Then try changing it back to 192.168.1.1 if you want.
      My ComputerSystem Spec
  10.    02 Aug 2017 #10

    Quote Originally Posted by superwindow View Post
    OK thought I had it figured out, but I reset TWO computers that are hard wired to the router and both got assigned an IP address that is 192.168.0.XXX

    I have no idea how this can be happening. Only think I can think of is that I changed dlink from being in the 192.168.0.XXX range to the 192.168.1.XXX range and maybe there is a glitch in their firmware.

    The router isn't actually in bridge mode, but IP PASSTHROUGH mode, and it is passed to the MAC Address of my dlink router, not sure what else I can do??

    Click image for larger version. 

Name:	image.png 
Views:	2 
Size:	47.6 KB 
ID:	146733

    The IP Address of router is now showing as my external IP address so the passthrough is working correctly.

    Click image for larger version. 

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Views:	2 
Size:	39.2 KB 
ID:	146734
    Looks like you had two devices running DHCP. First come first serve is how it works. So your "modem" was still acting as a router and DHCP server. Bridge mode stops that.

    Regarding the scope. You have it set from 1.1 to 1.254, you can change it but honestly it makes no difference. The protocol has mechanisms to avoid duplicate addressing and not worth the hassle tweaking.

    Regards,
    Josh
      My ComputerSystem Spec

 
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