Recently, some people regularly ask someone to ask the MAC address, then what is the MAC address? What role is played in the current network? Let's take a look at the knowledge about the MAC address. What is the address of the MAC address 1 MAC address is the address used on the media access layer. The popular point is the physical address of the NIC. The current MAC address generally uses 6-byte 48bit (in the early days of 2 bytes of 16bit MAC address) The top 24 is the manufacturer address of the manufacturer to the IEEE (this is to spend money! It is said that $ 1,000 can buy an address block). The latter 24 is determined by the manufacturer. (Early 2 bytes No application) IP address and MAC address have any links and differences, everyone knows, now there are many computers to build a local area network, and then connect through the switch and Internet (campus network in the university). such). Then assign each user to assign fixed IP addresses, which is managed by the management center, so you need to use the MAC address to sign users in order to manage, prevent confusion, clear responsibility (such as cybercrime). In addition, IP addresses and MAC addresses are different, although they are one-to-one relationships in the local area network. The IP address is specified by the current IPv4 standard, which is not subject to hardware restrictions, but the MAC address is the physical address of the network card, how much is related to hardware, and it is difficult to memorize. How to know that your MAC address method is more, it is more simple, introducing two common methods here, available in Win9X: WiniPCFG, available in 2000, XP can be obtained by ipconfig -all. If you have assigned IP to your own NIC, you can use nbtstat -a's own IP as shown below, the latter can only be used under 2000 / XP. How to get someone else's Mac is actually involved, if it is 2000 / XP user to use the NBTSTAT -A IP address (you can also get other stuff, you can don't learn badly). In addition, in the same LAN, you can use the PING IP or PING hostname, then use ARP -A to get.
