![]() Address Resolution Protocol (ARP) is used to resolve layer 2 MAC Address of the receiver (destination MAC address). At the layer 2 (Datalink layer) of the sending computer, if the computer want to encapsulate an IPv4 datagram inside an Ethernet frame, it needs destination MAC address. Source IPv4 address, destination IPv4 address, source MAC address are already available, because source IPv4 address and destination IPv4 addresses are available locally and the destination IPv4 address is where we are trying to communicate. When a computer encapsulates an IPv4 datagram, it needs source IPv4 address, destination IPv4 address, source MAC address and destination MAC address. The address used at layer 3 (Network layer) is IPv4 address (32 bit Logical Addresses) and the address used at layer 2 (Datalink layer) is MAC address (48 bit Physical Address). In other words, there are two types of addresses used for IPv4 communication. #Arp command to find mac address windows#You can view your network card’s hardware address by typing the command "ipconfig /all" at the command prompt (without double quotes using Windows Operating Systems). To understand this concept clearly, you need to visit the Ethernet frame format, which is the data packet generated at the Datalink layer. But at the Datalink layer, the addressing is MAC address (48 bit Physical Address), and this address is burned into the network card permanently. Network Applications at the Application Layer use IPv4 Address to communicate with another device. The purpose of Address Resolution Protocol (ARP) is to resolve an IPv4 address (32 bit Logical Address) to the corresponding physical address (48 bit MAC Address). -f filename: Works same as -s but instead of giving the entries manually, it takes entry from the file given as parameter.Address Resolution Protocol (ARP) is one of the major protocol of the TCP/IP protocol suite. ![]()
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