Ethernet Protocol packet structure

Ethernet Protocol packet structure
The MAC address of both sides of the Ethernet packet must be set. The sender is the MAC address of the NIC of the local computer,
The recipient is the MAC address of the gateway 192.168.1.1 (obtained through ARP ). The maximum length of an Ethernet data packet is 1500 bytes, and the current IP data packet length is 5000 bytes. Therefore, IP data packets must be divided into four packages. Because each packet has its own IP header (20 bytes), the IP packet lengths of the four packets are 1500, 1500, 1500, and 560, respectively.