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5.1 Provisioning (Activation)
Please note that the following information applies mostly to DOCSIS systems only. I do not know how other cable systems work, only the one I work in. Usually, if the cable modem is being installed by a technician, when he arrives at your residence, he calls his dispatcher and tells him or her the HFC MAC address of your modem. If you look at your cable modem, you will see a string of numbers on it somewhere starting with 00-90, 00-20, 00-00, or something similar. (Those numbers vary with the manufacturer of the modem). If you are doing a self install, you are usually instructed to call your cable company and read the number off to them. They then bind it to your account and activate it. Every cable modem manufactured has a unique MAC address (just like every network card or network device). This MAC address is bound to your account, and if your account is active, the cable modem is allowed to talk on the network. After your modem is provisioned or activated, you then hook it up to your cable and plug it in. (Continue on to Modem Boot Up...) Feedback received on this FAQ entry:
by Raydr This really depends on where you live. Some systems place High Pass Filters and/or Traps on a customer's line if they are not an active HSD customer. This prevents the cable modem from being able to talk back to the head end and/or from receiving a cable modem signal. If this is the company's ONLY way of protection, and they forgot to put one on your line, then you may be able to hook up a cable modem and surf away. This is unlikely though. Most cable companies now authorize your cable modem by serial number and/or MAC address. Attempting to use a non-authorized modem will just end up in your modem being denied access to the network. Feedback received on this FAQ entry:
by Raydr No, and here's why: As far as I know, there are three major ways that cable companies allow cable modems to access their network: 1.) Filters/Traps: Some cable companies don't care about the MAC address of your cable modem. They prevent your modem from talking back to them by installing a filter and/or trap on your cable line at the tap. When you get your service activated, they come out and remove whatever they need to. This is not used often because it's very easy for people to steal cable modem service. 2.) HFC (Cable Modem) MAC Authentication: In this case, the cable company would authorize your cable modem by it's MAC. Every DOCSIS cable modem has one, and if you look at yours, it should have a sticker with an "HFC MAC". When your modem boots up, it attempts to talk to your cable provider, and the provider will either grant or deny it access based on it's MAC address. 3.) HFC (Cable Modem) AND NIC (Network Card) MAC Authentication: Some cable companies, for some reason, also authenticate the network card in your computer. First it will authenticate the Cable Modem, and then when your computer attempts to get online, they'll check and make sure that you're still using the same computer/network card/etc that you've always used. If you've changed your network card or installed a router, they will block your access. I'm not sure exactly why they do this, but I'm guessing that this is partially how they prevent you from sharing your cable modem on a network. This is also why most routers have a "MAC Address Clone" feature. If you tell your router to clone your network card's MAC Address, it makes your cable provider think that you're still using the same computer/network card to access their services, and therefore they allow your router on the network. Now, the reason why it wouldn't get you free cable: When you clone an address in your router, you're cloning a NETWORK CARD, not a CABLE MODEM. The only way you could get free cable modem service this way is by somehow changing the MAC address of the CABLE MODEM to one that has been provisioned (authorized) already. DOCSIS cable modems cannot be modified in this way. Now that I think about it, if any cable companies out there authenticated by Network Card MAC Address only, and not cable modem, this might work, but I doubt there are any providers out there that dumb. Feedback received on this FAQ entry:
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