Ethernet data link layer
First, Ethernet - Ethernet, LAN networking technology in today's dominance.
Type of network is determined by the two layers.
Second, the development of Ethernet
Third, the classification of Ethernet
Fourth, the data link layer of the hierarchical design
LLC: Logical Link Control, is responsible for identifying the network layer protocol type, packet reception upper layer data encapsulated in a frame later, is transmitted to the lower layer.
MAC: Medium Access Control, is responsible for the physical connection medium control layer, the physical hardware address processing apparatus, the definition of the network topology and data frame transmission order.
Fifth, the Ethernet frame structure
