Router locks up when modem looses connection

August 23, 2010 at 19:19:01
Specs: Windows 7, Q9550/8gb
I have a cable modem (SB5120 Surfboard) and during peak hours it will lose signal for a split second. When this happens my router (Belkin wireless N) locks up so I can get it working again by either unplugging the modem or unplugging the router (works more often). I've also had a wired linksys (befsr41) hooked up and even an off brand switch. Every device had the same results one time or the other. COX says nobody in the area has this problem but me. I've even hooked up another modem and still get the same problem, although it was more often. I have noticed one possible factor involved. I notice the problem mostly when I'm running Hulu, or Netflix through my PS3, but since we have no TV its mostly running when we home. Give me some ideas guys i'm head butting a brick wall.

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August 23, 2010 at 20:23:08
Go to and that should bring up your cable modem's status page. It may or may not tell you what your signal level is. Your cable modem should lock to your initial MAC address. Try cloning the mac address, and enabling it -- and then call Cox and see if they see your router's mac address, and have them re-provision your cable modem.You might also verify the patch cables you're using. That could be the problem as well...Reset your router too while you're at it by pressing the reset button on the back. Try to disable anything extra, just get it going on the bare minimum.

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August 25, 2010 at 16:12:38
My modem signal is Downstream, Freq:819000000 Hz, Noise Ratio 36 dB,
Network control object: ON, Power level:-4 dBmV . My upstream Freq:31000000 Hz,
Symbol Rate:2.560 Msym/s, Power Level: 45 dBmV. If I understand the Cox uses my cable modem's MAC and I just clone it on my router. I've switched out cables to a cat6 to be safe. If I unhook everything else except my computer and PS3 I still get locked up. I'll try calling COX tomorrow to get them to restart my modem.

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