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Very Wierd Router Behavior, Need Help Please

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#1 hustlerinc28


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Posted 14 September 2007 - 06:36 PM

I currently have a linksys wirless G router srx200 (wrt54gx2). I needed a stronger signal so i upgraded to the linksys wirelss N router (WRT300 N [1.1]). (i have verizon dsl w/ a fujitsu modem)
This is where the wierdness comes in, when i connect my modem straight to my computer, there is no internet connection even tho all 3 modem lights are on and steady. but when i connect my modem to the wireless g router then to the computer the internet works just fine.
but when i tried to upgrade, the linksys set up wizard did not work (couldnt find an internet connection)
i did all the troubleshooting reseting the router, unplugging and plugging back in.
i called linksys tech support and they went through all possible reasons and everything in the book then said to get another unit, and then the same thing.

ANY help would be greatly appreciated please

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#2 usasma


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Posted 15 September 2007 - 12:24 PM

I'd suspect that your ISP has MAC address filtering in place - so when you hook up with your computer a different MAC address is presented to your ISP. Since it doesn't recognize this MAC address, it won't let you connect.

I'd suggest contacting your ISP to see if this is the case.
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#3 M...


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Posted 15 September 2007 - 02:06 PM

Hello hustlerinc28,

Another possibility is that you never powered-off the modem itself.

The following may not work with your ISP, but for many ISPs, I think it will:

Whenever you change the device (i.e., a single computer or a router) that is directly/physically connected to the modem, you must first power-off EVERTHING, then power-on the modem (modem only -- no other devices) and wait for the modem lights to stabilize (indicating a good connection to your ISP). Then, power-on the single device directly connected to the modem (there can usually be only one -- either a computer or a router) and wait for it to stabilize (e.g., look at the router's lights). Then, power-on everything else.

I know this sounds like "magic", but basically, the modem remembers the MAC (Media Access Control) address of the device that first connected to it (the modem) after the last time the modem was powered-up and was initialized properly by communicating with the ISP. The modem will communicate only with that single device (i.e., a specific router or a specific computer).

#4 hustlerinc28

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Posted 16 September 2007 - 01:35 AM

Worked like a charm

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