Cox Cable / Static IP / New Router

[Derek Trotter]

I had a similar problem a few years ago, only I was a residential 
customer.  When I first got their service, I plugged the cable modem 
directly into the computer.  I had to call them and give them the mac 
address of that nic.  Only after that nic was registered with them would 
the service work. Later when I added a router and a second computer, I 
had to call again and register the router's ip address.

I also knew the cable modem itself has to be authorized before it can be 
used.  Now here's the part I don't understand.  Since they already know 
what cable modem you're using, why do they also require a nic to be 
registered before it can be used?


On 8/31/2012 8:33, keith smith wrote:
>
> Thanks to everyone who replied.
>
> I should have mentioned that I am back on line and my static IP is 
> working.  I just found it odd that Cox would offer a different IP than 
> the one I am assigned if I did not set my router up for a static IP.  
> I assumed that when my router asked for the IP Cox would provide the 
> static IP automatically.
>
> ------------------------
> Keith Smith
>
> --- On *Thu, 8/30/12, Michael Butash /<michael at butash.net>/* wrote:
>
>
>     From: Michael Butash <michael at butash.net>
>     Subject: Re: Cox Cable / Static IP / New Router
>     To: plug-discuss at lists.plug.phoenix.az.us
>     Date: Thursday, August 30, 2012, 12:24 PM
>
>     If you do that, reboot your modem at the same time.  From a docsis
>     level
>     they filter only one mac at a time (unless you pay for more), and
>     flipping mac's won't always simply work.
>
>     -mb
>
>
>     On 08/30/2012 11:55 AM, JD Austin wrote:
>     > They go off the network mac address that you're sending them; many
>     > devices let you spoof anything you want.
>     > If you can still boot the old one get it's mac address and spoof
>     it on
>     > the new one.
>     >
>     > On Thu, Aug 30, 2012 at 11:33 AM, keith smith
>     <klsmith2020 at yahoo.com </mc/compose?to=klsmith2020 at yahoo.com>
>     > <mailto:klsmith2020 at yahoo.com
>     </mc/compose?to=klsmith2020 at yahoo.com>>> wrote:
>     >
>     >
>     >     Hi,
>     >
>     >     Last night, after 6 years of good loyal service, my D-Link
>     router
>     >     died.  I just happened to have a never used 2 year old Netgear
>     >     router in my closet.  I hooked it up and everything was fine at
>     >     first. I have a static IP and it changed.  I called Cox and
>     was told
>     >     I needed to configure my router to tell them what my IP is. 
>     I'm not
>     >     a network guru, so this hit me kind of strange.  I thought they
>     >     assigned IP's.
>     >
>     >     Any thoughts on this are much appreciated.
>     >
>     >     ------------------------
>     >     Keith Smith
>     >
>     >
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