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Author Topic: Find IP Cam on Different Subnet.  (Read 2061 times)

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abrogard

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    Find IP Cam on Different Subnet.
    « on: October 19, 2017, 04:03:38 PM »

     Our LAN has local IP's in the 10.x.x.x  range.

     I have an IP camera with default IP of 192.169.1.108

     I want to see it and change its IP.

     Can I do it like this:

    Disconnect the wireless connection between my pc and the router.
    Connect ethernet between my pc and the IP camera.
    configure the 'Intel Ethernet Connection'  with an IP like:  191.168.1.100
                                                                                                subnet mask 255.255.255.0
    and expect it to work?

    I have these concerns:

    Would I use a normal ethernet cable or I need a 'loopback' cable?  ( I think that's what they call it)

    What default gateway address would I give?
    Would I need DNS addresses? What?




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    camerongray



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    Re: Find IP Cam on Different Subnet.
    « Reply #1 on: October 19, 2017, 05:10:27 PM »
    That's exactly what you would do - You wouldn't need to set a default gateway or DNS server as you aren't going to be accessing the internet, just leave them blank.  Traditionally you would have needed a "crossover cable" to connect it to the PC but pretty much any remotely modern machine will support Auto MDI-X which will automatically detect the type of cable and adjust accordingly so a regular Ethernet cable will likely work fine.

    abrogard

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      Re: Find IP Cam on Different Subnet.
      « Reply #2 on: October 19, 2017, 05:17:34 PM »

        Thanks.  So I'm on the right track.

        But it is not working.

        The link light on the pc ethernet plug doesn't light up.  Perhaps a shonky cable.

         It is important to disconnect the wifi connection - pull out the wifi usb stick or disable in network confi on win10 I guess?
       
        But that wouldn't stop the link light coming on would it?

        I checked the cable. It works fine between the pc and the router, link light comes on. 

        But between the camera and the pc nothing.   

      Mark.



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      Re: Find IP Cam on Different Subnet.
      « Reply #3 on: October 19, 2017, 10:35:01 PM »
      why not plug the IP camera into the same modem the PC is connected to?

      if the camera has had that IP address set as a static one, either hold in the reset switch on the camera to change it back to getting its IP from the modem/router, or change your IP range to match the camera just so you can access the camera via a browser and undo that static address (bloody long winded way though).

      abrogard

        Topic Starter


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        Re: Find IP Cam on Different Subnet.
        « Reply #4 on: October 19, 2017, 11:23:46 PM »
        Quote
        why not plug the IP camera into the same modem the PC is connected to?

         that's the setup now.   the IP cam is plugged into the router with ethernet.
         
         the computer is plugged into the router with ethernet.

         the computer has a local ip in the 192.x.x.x  range
         the camera is supposed to have a factory default ip in the 192.x.x.x range

         the router itself has a local ip in the 10.x.x.x  range

         so the computer should see the camera.

         and the router should know there's an ethernet device attached.

         but it's not working like that.

         :)

         there's no reset button on the camera.

        Mark.



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        Re: Find IP Cam on Different Subnet.
        « Reply #5 on: October 20, 2017, 02:32:21 AM »
        there's no reset button on the camera.

        are you 100% sure ;) , from my experience, all wireless connectable devices have a reset button somewhere.
        it may not be a little black 'push here' button, maybe a recessed hole that you have to push a pin into, but there's always been one somewhere.

        what's the make/model?

        I'm confused about how the router is pumping out IP's in to 10.n.n.n range, but your PC is in the 192.n.n.n range.
        I can understand the camera may be 192.n.n.n if it's been set to a static IP, but the router should have DHCP enabled hence all IP's of connected devices will get a dynamic IP in the 10.n.n.n range.

        abrogard

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          Greenhorn

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          • OS: Windows XP
          Re: Find IP Cam on Different Subnet.
          « Reply #6 on: October 20, 2017, 10:58:34 AM »
          It is a dahua IPC W5431.  An unbadged version.  From aliexpress.

          I guess there might be a reset hole in it somewhere.  i'll have a good look today.  but it is straight from the factory.  it should be in the reset state.

          my pc is in the 192 range because i have put it there in order to get on the same subnet as the camera.

          the ethernet card on the pc is what i've changed.

          the usb wifi adapter is still on the 10.x.x.x  range.