Anyone with a little network experience knows that there are two types of addresses that need to be noted when using network cards: one is the MAC address, that is, the physical address of the network card. This is the only identifier of the network card itself. Just like our ID card, it cannot be changed at will; the other type is the IP address, also known as the logical address, which can be changed at will according to the situation.
The MAC address is the address used by the Ethernet protocol and works in the local area network. It is 48 bits long and is generally represented by "-" in the middle of the hexadecimal number between 6 bits 00 and 0FFH, such as "52-54-AB-22-40-87". The first digit is the manufacturer's code, and each Ethernet NIC manufacturer must apply for a set of dedicated MAC addresses, and the latter digit is the product serial number. The MAC address is programmed in the EEPROM on the NIC card when producing NIC. Since the network card sends and receives data packets according to the MAC address, in principle, the MAC addresses of any two NICs should not be the same regardless of which manufacturer. However, due to various reasons, some products will also have the same number, but they should generally be sold in different regions accordingly.
The IP address is an Internet protocol address. The address is now 32 bits long and is usually represented in the form of a decimal number between 0 and 255 separated by 4 bits ".", such as "192.168.0.1". There are three categories: A, B, and C:
Class A: 1 byte network address and 3 byte host address, address range 0.0.0.0-127.255.255.255.255.255. There are 126 network nodes, and each network node can connect to 16777214 hosts. It is used by super-large companies and is almost entirely owned by American companies.
Class B: 2-byte network address and 2-byte host address, address range 128.0.0.0-191.255.255.255.255. There are 16,382 network nodes, each network node can connect to 65,534 hosts, which are used by medium-sized companies.
Class C: 3-byte network address and 1-byte host address, address range 192.0.0.0-233.255.255.255. There are 2097,150 network nodes, each network node can connect to 254 hosts, which are used by small companies.
Among them: 0 and 255 cannot be used in any part, they are reserved for special purposes. 127.0.0.1 is called a loopback address, which can be used to test whether the host network protocol is installed correctly. 192.168.0.0~192.168.255.255 is retained on the Internet and is not used, so these addresses are generally used when building a local area network connected to the Internet.
So, how to get the MAC address?
1. Open the chassis and copy it directly from the network card.
2. Use the network card driver disk to test.
3. Use URL conflicts to obtain network card number.
All the above methods can be implemented, but it is quite cumbersome to use. Is there a simpler and easier way to do it?
Of course there is, I will introduce some methods to obtain using software.
This is a powerful tool that Gates gave us with WINDOWS 9X. From this we can get very detailed network card information, and it is also a graphical interface. When using it, just click WINIPCFG in "Start-Run", and the adapter address is the MAC address. Click "Details" and more network information will appear.
If you are lucky enough to not even get into WINDOWS, you have to use another tool given by Microsoft IPCONFIG. To put it bluntly, it is the DOS version of WINIPCFG, which can be run with parameters. Use "IPCONFIG /?" to ask for help. However, we can get all the information by using the "/ALL" parameter to "grab the eyebrows and beard".
Under WINDOWS NT, we can also use this method.
3.03
This is a powerful tool for network management, which can monitor the transmission of information between computers in the network, network traffic and other information, and is even more of a piece of cake for obtaining MAC addresses. What is more convenient is that it can not only check its own MAC/IP address, but also detect the addresses of other machines on the network. You only need to click "Auto Discovery" on "Tools-Address book" and determine the search IP address range. After completion, a "NAME/MAC ADDRESS/IP ADDRESS" comparison table will appear. There are many functions, highly recommended to network administrators.
Similarly, you can also get the IP address in the above tool. How about it, it’s simple! ! ! Article entry: dnbm Editor: dnbm
The MAC address is the address used by the Ethernet protocol and works in the local area network. It is 48 bits long and is generally represented by "-" in the middle of the hexadecimal number between 6 bits 00 and 0FFH, such as "52-54-AB-22-40-87". The first digit is the manufacturer's code, and each Ethernet NIC manufacturer must apply for a set of dedicated MAC addresses, and the latter digit is the product serial number. The MAC address is programmed in the EEPROM on the NIC card when producing NIC. Since the network card sends and receives data packets according to the MAC address, in principle, the MAC addresses of any two NICs should not be the same regardless of which manufacturer. However, due to various reasons, some products will also have the same number, but they should generally be sold in different regions accordingly.
The IP address is an Internet protocol address. The address is now 32 bits long and is usually represented in the form of a decimal number between 0 and 255 separated by 4 bits ".", such as "192.168.0.1". There are three categories: A, B, and C:
Class A: 1 byte network address and 3 byte host address, address range 0.0.0.0-127.255.255.255.255.255. There are 126 network nodes, and each network node can connect to 16777214 hosts. It is used by super-large companies and is almost entirely owned by American companies.
Class B: 2-byte network address and 2-byte host address, address range 128.0.0.0-191.255.255.255.255. There are 16,382 network nodes, each network node can connect to 65,534 hosts, which are used by medium-sized companies.
Class C: 3-byte network address and 1-byte host address, address range 192.0.0.0-233.255.255.255. There are 2097,150 network nodes, each network node can connect to 254 hosts, which are used by small companies.
Among them: 0 and 255 cannot be used in any part, they are reserved for special purposes. 127.0.0.1 is called a loopback address, which can be used to test whether the host network protocol is installed correctly. 192.168.0.0~192.168.255.255 is retained on the Internet and is not used, so these addresses are generally used when building a local area network connected to the Internet.
So, how to get the MAC address?
1. Open the chassis and copy it directly from the network card.
2. Use the network card driver disk to test.
3. Use URL conflicts to obtain network card number.
All the above methods can be implemented, but it is quite cumbersome to use. Is there a simpler and easier way to do it?
Of course there is, I will introduce some methods to obtain using software.
This is a powerful tool that Gates gave us with WINDOWS 9X. From this we can get very detailed network card information, and it is also a graphical interface. When using it, just click WINIPCFG in "Start-Run", and the adapter address is the MAC address. Click "Details" and more network information will appear.
If you are lucky enough to not even get into WINDOWS, you have to use another tool given by Microsoft IPCONFIG. To put it bluntly, it is the DOS version of WINIPCFG, which can be run with parameters. Use "IPCONFIG /?" to ask for help. However, we can get all the information by using the "/ALL" parameter to "grab the eyebrows and beard".
Under WINDOWS NT, we can also use this method.
3.03
This is a powerful tool for network management, which can monitor the transmission of information between computers in the network, network traffic and other information, and is even more of a piece of cake for obtaining MAC addresses. What is more convenient is that it can not only check its own MAC/IP address, but also detect the addresses of other machines on the network. You only need to click "Auto Discovery" on "Tools-Address book" and determine the search IP address range. After completion, a "NAME/MAC ADDRESS/IP ADDRESS" comparison table will appear. There are many functions, highly recommended to network administrators.
Similarly, you can also get the IP address in the above tool. How about it, it’s simple! ! ! Article entry: dnbm Editor: dnbm