What does the "clone MAC address" of a wireless router do?

Reproduced in this article: http://blog.sina.com.cn/s/blog_4c900d100102uysb.html

1. Questions:

What does the "clone MAC address" of a wireless router do? How to use?

2, the use of the background:

Broadband operators in individual regions (unicom companies, telecommunications companies, etc.) the default is: A broadband account only allows you to surf the internet, and secretly put your computer's MAC address (in fact, the MAC address of your computer's network card) record to their server, and bundled with the broadband account.

3. Cause of Occurrence:

If you have the following situation: replaced the computer network card, or the replacement of the computer (the real is also replaced the network card), or in the back of the broadband cat connected to the wireless router, or a switch, or a cat, a router and connected to a number of computers, their servers scanned to the MAC address and previously saved , the bundled MAC address is inconsistent, and the connection is automatically blocked.

4, Display symptoms:: Router display is connected, but you are not on the net. (In fact, the router has connected several computers together to form a local area network, but the router does not receive the operator's data stream signal)

5, the problem-solving ideas:

Change the MAC address of your current router to the MAC address of the computer (which is actually a computer network card) that was connected when you used the broadband cat to surf the internet, which is the MAC address clone.

6, "MAC address cloning" method of Operation Path:

Take the Tp-link router as an example. Enter http://192.168.1.1 in the browser address bar (different brands of routers are not the same, first look at the instructions or the label on the router), go to the router's home page to set. Click "MAC Address Clone" on the third line under the "Network parameters" directory on the left---then click on the "Clone MAC Address" button on the right side of the screen---save to exit. At this time, the MAC address of the wireless router has been modified to (clone) the same MAC address as the computer network card. This means that the MAC address of the wireless router is the same as the MAC address of the computer network card. In this way, the operator's server first detects the first Internet device is a router, and then detects the computer network card. Because the MAC address of the router has been cloned into the MAC of the computer network card, the carrier server mistakenly considers the router to be released by the computer that is allowed to surf the MAC address. After the router gets the right to surf the Internet, it automatically assigns the intranet IP to every computer that is going online via DHCP, so that n computers can surf the internet.

7, "MAC address cloning" see:

The first line is the MAC address of the computer (network card),

The second line is the MAC address of the wireless router.

"MAC address cloning" means that the first line of the address is copied to the second row, two addresses are consistent.

"Restore factory MAC Address" means to restore the modified MAC address to the actual original MC address. Also equals to undo the clone Operation just now.

What does the "cloned MAC address" of the

wireless router do?