What does router mac mean?

Router mac means the physical address of the network card; it is different from the IP address. The IP address is used to indicate the location of the computer in the global Internet, while the MAC address is used for routing calculations to find the nearest path; around the world The MAC addresses of network cards are different, and each network card has only one MAC address.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

MAC is the physical address of the network card.

It is different from the IP address. The IP address is used to indicate the location of the computer in the global Internet, while the MAC address is used for routing calculations to find the nearest path.

The MAC addresses of network cards all over the world are different, and each network card has only one MAC address. But the MAC address of the network card can be changed. So now shu says that this address is no longer fixed for every computer.

Extended information:

The connection and difference between MAC address and IP address:

In a stable network, IP address and MAC addresses appear in pairs. If a computer wants to communicate with another computer on the network, then the IP addresses of the two computers must be configured. The MAC address is set when the network card leaves the factory. In this way, the configured IP address forms a corresponding relationship with the MAC address. .

In data communication, the IP address is responsible for representing the network layer address of the computer, and the network layer device (such as a router) operates based on the IP address; the MAC address is responsible for representing the data link layer address of the computer, the data link Layer devices (such as switches) operate based on MAC addresses. The mapping relationship between IP and MAC addresses is completed by the ARP (Address Resolution Protocol) protocol.

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