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need help with a router and cox cable connection

M

m1ke101

Platinum Member
I just had a cox cable connection hooked up and its working fine, but when I hook up my router it doesn't seem to work. It just doesn't connect at all. It seems like its not connected to the internet at all. When I had comcast cable at home, I just hooked up the router and it worked fine. I tried flashing my linksys befrs41 router to the newest firmware but no luck. I reset to default settings and still nothing. Am I over looking something?
 
Does it work without router in the mix? Will hooking up cable modem to computer work?

Verify that first.

Otherwise reset router and cycle power and try it again.
 
Yep, thats how I'm posting at the moment. When I don't use the router and hook up directly to the modem it works.
 
When you connect to router and look at status does it show its obtaining an ip address from Cox?
 
Okay.. the zeros indicate that it thinks the media is disconnected or not seeing a dhcp server.

Basically its not seeing Cox through the modem.

Did you do a complete hardware reset of the router using the reset button?


Turn off the cable modem & router. After a couple minutes turn cable modem on first.. wait for it to go completely ready then turn on router. (try different cable between router & modem if you haven't already or if it hasn't worked direct with same cable).




 
The cable company "may" require you to have a specific computer name. Comcast used to require that when they were using @home for their network managers, after @home bit the dust, they changed and now it's no longer necessary.
 
if reset doesn't work, the 41's software installation should set things up easily. it walks you right through it. it tells you when to turn on and when to hook up.
 
Run winipcfg

click Release All

click Renew All

edit: clarification
- winipcfg (for Windows 95/98/Me)
- ipconfig (for Windows NT/2000/XP)
- ifconfig (for Unix/Linux platform)
 
Of course, W98 and ME both have IPCONFIG, it's just that the command syntax is slightly different. It's RELEASE_ALL and RENEW_ALL for the same operations.
 
You may need to spoof the mac of the nic in your PC that was connected before the router was put in.
 
The Cox network bases it's DHCP leases on your MAC address. If, in your case, you had your computer directly connected to the modem and it was working fine, then you connected the router and nothing, it means that the Cox servers don't recognize the MAC address on the router's WAN port. Just reboot the cable modem (making sure to leave the router on, toherwise the cable modem can't see the MAC) and be sure that everything on the router is set to DHCP (at least the IP, subnet mask, and default gateway.)

I've been using cox for a while and this is the joyful procedure I normally get to go through when I replace any of my border routers.

As an alternative, if your router supports it, just have it spoof/clone the MAC address from your computer's NIC. This will make the Cox network think it's the same computer connected, and allow it to continue with the same settings.

As another note... do *not* set the IP, subnet or gateway to be static. Cox actively scans the network for these configurations and they usually don't stay online for more than a day.
 
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