Question about Belkin (F5D7230-4) Router (587009)

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MAC address cloning

What is the concept of MAC address cloning

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Hi killer - MAC (Media Access Control) cloning is used to clone your MAC address.
Some ISPs (most notably MediaOne) use your NIC's MAC address to authenticate your service. When you change the computer that you have connected to your cable modem service, you usually have to call up Tech Support and give them the MAC address of the NIC in the new machine. Since hardware routers have the equivalent of a NIC on their WAN port in order to connect to your cable modem, you would have to do the same thing if you're installing a router.
Recently, however, some ISPs have started to recognize the MAC addresses of popular routers and disconnect service if a router is detected. Fortunately, many router manufacturers are including the capability to either set the router WAN port MAC address to anything you want, or copy it from a computer connected to the router LAN side. You can check the Router comparison chart under "Mac addr. clone" to see which routers support this feature. Then consult the router's documentation for directions on using the feature.
So basically, it's used to fool ISPs into thinking there isn't a router. If the router has the same MAC address as either your NIC card or your modem the ISP won't detect and service won't be interrupted. Most ISPs don't do this so iy's rarely needed.
If this answers your question PLEASE rate this as fixed. If you need more help just add a comment and I'll be happy to assist you further. Thanks.

Jeff

Posted on May 22, 2008

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Posted on Jan 02, 2017

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You may need to clone your MAC address, a unique address is for each device connected to a network. Some internet service provider (ISP) modems quit working if the MAC address of the device connected to its Ethernet or LAN jack (i.e., your computer) changes from the one used when it was first set up. So when you hook up a new router to share the connection, you run into the problem you have.

Cloning the MAC address in the router sets it to the same address as the device connected to its number 1 wired port. Since you didn't give the brand and model of your router I can't give you specific steps or links to follow for the process. But it's typically very simple. From the computer originally used to set up your modem, access the router's setup pages. On the appropriate page, pick "clone MAC address" from a menu or click on a button. You can search for "<insert your brand of router here> cloning MAC address" and find many sites with how-to information. A good starting point is always the router manufacturer's site, where there is probably already an answer in their support FAQ section.

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http://downloads.linksysbycisco.com/downloads/WRT54GL-EU_11_UG_A-WEB.pdf

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