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ragnarok416

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Problem setting up Cable Internet with a Motorola Surfboard SB5100 (modem) and a D-link DL-524 (router)

Well, for some reason, the Motorola Surfboard SB5100 and the D-link DL-524 don't seem to like one another.  I tried plugging everything in as it's supposed to be plugged in (Modem > WAN port on router, and then router switch > PC's), but that didn't work right.  The PC can get to the router fine, but the router refuses to get an IP address using DHCP.  (I tried releasing/renewing it... nothing).  I also tried plugging the modem directly into the computer, jotting down the addresses assigned by DHCP to that particular ethernet adapter, then configuring the modem to use the static IP address configuration that I recorded (I got the router, DNS, etc as well).  Still nothing.  What in the world am I missing?  The computer receives DHCP signals from the modem fine, why can't the router?

-Matt
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HawkIT

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g3mini

Are you directly connecting an ethernet cord into the router or are you tring to do it wirelessly?
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Although it is not as common any more, some service providers only assign a DHCP address, or allow connection to the MAC address (Media Access Control address), you have provided for your account. A MAC address is a unique identifier for your network adapter. Therefore most routers have the ability to clone or change the MAC address of the router so that it is what your service provider sees. The D-Link as I recall has a clone 'button', on or near, the WAN configuration page. Log on using the computer that works, connected to the D-link, browse to the D-link's configuration page, and click clone MAC address. It will locate and copy the computers MAC. You can also find and enter it manually by entering    ipconfig  /all    at a command line to display it and then enter.
If you ISP filters by MAC address this would definitely cause the problem you described.
do the mac cloned on the router. maybe you're forgot to do that......
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Well, turns out that the MAC address wasn't cloned, although the setup program said it would handle it, so I didn't check!  Oh well, it's working now.  I split the points because it did need a crossover cable as well, as HawkIT said.  Thanks a lot!
>>"turns out that the MAC address wasn't cloned.........I split the points because it did need a crossover cable as well,"
Curious ragnarok416, you split the points between HawkIT who correctly identified the cable issue, and g3mini who said it was not the MAC address "This would eliminate doing anything with the mac address". Was the latter choice an error?
Thanks,
--Rob