|  | 11.3 | Advanced ARP Concepts
| 11.3.3 | How ARP sends data to remote networks

ARP uses broadcast packets to accomplish its function. Routers, however, do not forward broadcast packets. In order for a device to send data to the address of a device that is on another network segment, the source device sends the data to a default gateway. The default gateway is the IP address of the router interface that is connected to the same physical network segment as the source host. The source host compares the destination IP address and its own IP address to determine if the two IP addresses are located on the same segment. If the receiving host is not on the same segment, the source host sends the data to the default gateway.