If you are planning to become a network administrator or a network architect, you definitely need to know about Ethernet and Ethernet switching. The two most prominent LAN technologies in use today are Ethernet and WLANs. Ethernet supports bandwidths of up to 100 Gbps, which explains its popularity. This chapter contains a lab in which you will use Wireshark to look at Ethernet frames and another lab where you will view network device MAC addresses. There are also some instructional videos to help you better understand Ethernet. By the time you have finished this chapter, you will be able to create a switched network that uses Ethernet!