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Windows 7: Comcast modem sb5100 giving private IP address.

30 Dec 2012   #1

Windows 7 pro
 
 
Comcast modem sb5100 giving private IP address.

Can't connect to Internet, my modem is dishing out a private IP address and suber class b mask. I need to know the regular IP address and mask for Comcast but I have a feeling the modem is crapping out on me.

My System SpecsSystem Spec
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31 Dec 2012   #2

Windows 7 Ultimate x64
 
 

Is the address 169.254.0.x ?

A view of your IP address (ipcoinfig /all) will help. You might try restarting your modem, or find out if you're getting a dynamic or static address from your ISP.

You could also have a router/modem combo device. Just realized that you posted the model. Its not a combo device.

More information will be needed to actually help you.

One last thing is to make sure that your ISP can contact your modem. You will have to call them to test the connection.
My System SpecsSystem Spec
01 Jan 2013   #3

Windows 7 pro
 
 

thanks, issue solved.
My System SpecsSystem Spec
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 Comcast modem sb5100 giving private IP address.





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