In this section, you
will learn about the parts of the Ethernet frame, as shown in Figure
and how internetworking devices such as routers and switches filter
and forward these frames.
There are several different types of
Ethernet or IEEE 802.3 frames. The terms “Ethernet” and “IEEE
802.3” are similar but not identical. Ethernet is a product name and
a competing standard with IEEE 802.3. There are some differences and
similarities, but for the purposes of this section they are not
important. To keep things simple, you will see the term “Ethernet”
throughout this section, however, the information applies to both
Ethernet and IEEE 802.3 protocols.
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