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Printer Wifi seems to be corrupting Router internet access ???

Hi,

I have a weird problem.

A friend has just bought a Lexmark 7500 Wireless All-In-One inkjet printer. I have set its wireless up correctly so that wireless laptops can print from it, and ethernet connected desktops can via the router. However one cannot access the internet when the wireless printer is operating. I have tried IPCONFIG /RENEW, and this all seems fine.

When you switch the printer off AND switch off and switch on the router then you can reconnect to the internet from the laptops and desktop PCs etc.

So somehow the printer WiFi is messing with the router internet setup. Incidentally it is a SOHOspeed ADSL Wireless router.

Any ideas greatly appreciated.

Sam
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SamJolly
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SamJolly
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1 Solution
 
5prock3tCommented:
Check to make sure that the printer or one of the laptops is not using a static IP address that is in your DHCP pool.

You could also check your router's signal strength if the wifi printer is near it, could be overpowering the link between that laptop and the access point.
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SamJollyAuthor Commented:
5prock3t, thanks for the reply... I have some questions though..

"Check to make sure that the printer or one of the laptops is not using a static IP address that is in your DHCP pool."

>>>> I hoped to have achieved this by doing an IPCONFIG /RENEW to ensure that the IP addresses are unique. I suppose you are also say that I should check that all the clients are setup to use Dynamic IP as opposed to Static IP in the TCP/IP settings.

"You could also check your router's signal strength if the wifi printer is near it, could be overpowering the link between that laptop and the access point."

>>>>> This is a new one on me, and could be true since the printer is on a table which is imediately to the left of a worktop with the desktop and router on it with the router nearest to the printer. So I could get my friend to move the printer to another room and retry.

Comments on the above would be greatly appreciated, and your help thus far is hugely appreciated.

Thanks,

Sam

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5prock3tCommented:
If anything you have setup is using a static IP address that is in the DHCP pool the DHCP service will not be able to correct with a dhcp /renew because static addresses are not changed by DHCP. The DHCP service only cares about its pool and not what already is set on other devices, and only affects devices that are set to receive their addresses dynamically.

If everything in your network is set to receive a dynamic IP address there should be no problems. Just check to see if anything is set to static in is IP settings.

You can then check the settings of your DHCP pool which sounds like it would be in your wifi router configuration with the setup you have. You should see something in the config under DHCP along the lines of "Start address 192.168.1.x" and "y number of addresses" which will tell you what addresses to not use for static assignment.

If x is 100 and y is 50 then you should not use 192.168.1.100 through 192.168.1.150 as a static IP on a computer.

Hope this helps!
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SamJollyAuthor Commented:
5prock3t:, Checking this all out now...

Sam.
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SamJollyAuthor Commented:
thanks
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