Before we move on, it's important that we review the special types of addresses mentioned. We need to have a good understanding of these addresses and the concepts behind them.
Address types for IPv4
Layer 2 broadcast addresses
Let's start with layer 2 broadcast addresses. One of the first things we must understand about these addresses is that they are hardware broadcast addresses; they are specific to the segment you are in. They would never leave your LAN, so they would never leave the boundary of your router.
Typically, a hardware address is 48 bits in length. If you were to look at your MAC address on your computer by typing the ipconfig/all command in your command prompt, you would see this 48-bit hardware...