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Conflicting IP address

  • 13-02-2011 8:08pm
    #1
    Dr. Zeus
    Closed Accounts Posts: 189 ✭✭


    Hi there,


    I am getting a message saying another PC logged into this network has the same IP address contact your windows adminisrator.

    This is a private PC and not logged on to any network.

    Should I be concerned about this? And what can I do to resolve this issue.

    Many thanks for your help


Comments

  • #2
    JonathanAnon
    Closed Accounts Posts: 23,718 ✭✭✭✭JonathanAnon


    You can find the ip address of your PC by opening up the command prompt and typing IPCONFIG /ALL ... the first step would be to do this on all PCs connected to your network...

    Usually the PCs are set up to use DHCP (a service on your broadband router), which lets the router automatically assign the IP addresses to the clients... One or both of the PCs may have been assigned with a static IP address. You just need to find the two devices that have the same IP address and either a) assign different static IPs or b) if you have a router with DHCP, set both client to use DHCP..


  • #3
    5uspect
    Moderators, Arts Moderators Posts: 10,518 Mod ✭✭✭✭5uspect


    What else is using your router to access the internet? Xbox, PS3, internet radio, smart phone? Any such device will need an IP address and if it's not correctly assigned you'll get a conflict.


  • #4
    Dr. Zeus
    Closed Accounts Posts: 189 ✭✭Dr. Zeus


    Thanks to you both for taking the time to reply. Appreciate your help.


  • #5
    Nothingbetter2d
    Closed Accounts Posts: 4,037 ✭✭✭Nothingbetter2d


    if u are using wifi make sure u set the wifi encryption to wpa NOT wep (WEP is too easy to hack)


  • #6
    noshankus
    Closed Accounts Posts: 133 ✭✭noshankus


    Normally this occurs when your router is set to assign IP addresses automatically using DHCP for a range of IP addresses, let's say 192.168.0.2 --> 192.168.0.100 for example.

    If you attach to the network and receive an IP address using DHCP, you will assigned an IP address in that range, let's say the first one: 192.168.0.2

    Now imagine someone attaches to the network but doesn't request an IP address from DHCP, instead they have it set manually to the same IP address as you have already received. This is allowed, but both parties will see this message that someone else has their IP address.

    While this is the most likely reason, foul play can't be ruled out. Try disconnecting from the network (pulling out the wire, or disconnecting from the wireless network) and connecting again. Hopefully you'll get the next free DHCP assignment and it'll be a different IP address. Otherwise, keep pinging IP addresses in your range until you get no answer and then manually assign that IP address to yourself (essentially doing the same as your counterpart :) )


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