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IP conflict on my home network

Hi.
If there is an IP conflict, that means that two different devices connected to your home router are getting the same IP. In this case one or more connected devices will have limited connectivity, as they will be unable to access network resources.


The following troubleshooting must be performed on one networked device at the time.

Check if the internet provider that you are using allows DHCP. Most broadband providers use DHCP.

DHCP (dynamic host control protocol) means that the IPs, instead of being static are being assigned each time by the router.

If you use DHCP, then ensure that all devices connected to the network are not set on Static IP. If there is a device that must be set on static (eg. a network printer), then change manually the device IP to a different one. Ensure that the new IP belongs to your network range.

Reset the network settings on all connected devices. On computers remove the network adapter from the installed hardware devices list in control panel.
Restart computers one by one, after removing the adapter, and allow the network card to reinstall, using driver disk when needed (ensure that you have the drivers first). It will set itself to DHCP by default.

If that does not work, then you can try changing MAC address on Windows. The MAC address is an unique identifier that is assigned by manufacturer to any Ethernet adapter. The MAC address is used by the router to determine IP. To this purpose see: Changing MAC addresses on Windows .

If still no luck , then the next step would be resetting and re-configuring the router again, using the settings given by your ISP. Ensure that you have your Internet Service Provider configuration settings before resetting the router

At this point it may be worth testing a different Ethernet adapter (eg an USB adapter), rather than resetting the router.

If all that does not work, then either the router, or one of the two network adapter is probably defective. In some case virus or malaware can also cause IP conflicts.In that case ensure that the computer is clean, and eventually replace the router, after testing PC network adapter.

Note:If your home LAN uses static settings instead of DHCP, simply check that the IP set for each device is different.

Regards.

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my router was working fine with my iphone and ipad , now it will not connect and i still have a connection with my ps3


If you reset the router and have not turned off and back on all your devices you probably have conflicting addresses. some versions of ps3 will not connect for some reason unless they have the first ip available on the router.
Turn off your wirelss on your iphone and ipad, turn off the ps3. Reboot the router when it comes back up turn on the ps3 and get a good connection, the enable wireless on your ipad or iphone and get a connection the doe the same with the other.
This will avoid conflicting addresses.
An IP address has a 24 hour lease if you reboot a router it forgets what device had whipch ip address. If you need to reboot your router you need to refresh the ip address of all your devices to avoid conflicting ip's.
In this case I suspect you ipad and iphone are attempting to use the same ip address.

Jan 29, 2013 | SMC Barricade g SMC2804WBR Wireless Router

1 Answer

DHCP Problems


Routers have a built in DHCP server to identify each computer connecting to it so traffic can be routed to the correct computer, if more than 1 computer/device shares the same IP you should get an IP conflict not a DHCP error. Routers also normally give out IP addresses from its pool of IP's sequentially and assigns it to expire in 24 hours, so if you reboot your router turn on 1 device grab an IP and then turn that device off, reboot your router and turn a different device on it will get the same IP, now when you turn the other device back on you have a conflict.
If your router has been reset you have to release and renew IP addresses on all your devices to prevent conflicts.

Jan 21, 2013 | Belkin F5D8236-4 Router

1 Answer

I am trying to connect my Dlink DKT-401 router to my Linksys cable gateway router. I am not getting internet access when connecting to the Dlink network


I DON'T THINK YOU CAN RUN 2 ROUTERS ON THE SAME NETWORK UNLESS ONE IS USED AS AN ACCESS POINT.
1. Connect as local device or bridge - If connecting the second router via Ethernet cable, plug it into one of the LAN ports on the first router. If connecting the second router wirelessly, ensure the second router is set for client mode. Note that some home wireless routers do not support client mode; these must be connected by cable. Check your router documentation for details on its client mode configuration support.

2. Check / change IP address - Most home network routers use a default IP address setting. Often, these default IP addresses will not work in a two router environment. Check the second router's IP address value and reset it if necessary to work within the valid address range of the first router (and to not conflict with any other device on the network).

3. Disable DHCP - To avoid IP address conflicts between all of the devices on the home network, only one of your two routers should assign addresses via DHCP. All mainstream routers provide an option to disable DHCP as part of the router's configuration screens.

Instead of adding a second wired router to an existing network, consider adding a network switch instead. A switch accomplishes the same goal of extending the size of a network, but it does not require any IP address or DHCP configuration, greatly simplifying configuration.
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Dec 11, 2010 | D-Link Computers & Internet

1 Answer

ip conflict after setting up dwl-g710, after setting up the extender i cannot access it because my pc reports an ip conflict, any suggestions would be appreaciated


Hi,

You will get an IP conflict if you have assigned the same IP address on your network devices. Every networking devices should have different network address or IP address. If for example the IP address of your router is 192.168.0.1, then your wireless expander can be configured as 192.168.0.2, 192.168.0.3, 192.168.0.4 and so on but not 192.168.0.1 since it is already being used by the router.

Jun 30, 2009 | D-Link AirPlus G DWL-G710 Wireless Range...

2 Answers

im try to set up an wireless connection but it always seams to have a problem, one of them is that the sistem says that i have an ip comflict! what can i do?


If your getting that message on your computer that means the IP address that your computer acquied from your serverrouter has a duplicate in the network. The very first thing that you need to check is whethere your computer has a an IP address that is manually assigned to it, to check this just go to Network Connections under Control Panel(assuming your computer runs on Windows XP). Right click on the Wireless Connection icon and go to properties, under Local Area Network Properties you will find several check marks under This device uses the following; Client for Microsoft, File and Printer Sharing, QoS Packet Scheduler etc... Look for and highlight Internet Protocol(TCP/IP) and click Properties, under the TCP/IP Properties you have 2 option for both IP and DNS server. Make sure both is set to obtain. If your still getting the same message Right click on Wireless Connection and choose repair so tha your router/server will provide a new unique IP address, wel that will usually resolve the IP address conflict on your computer.

Nov 06, 2008 | Belkin Computers & Internet

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