Ethernet Technologies Overview
Ethernet is a family of networking technologies used in local area networks ( LAN ), which are defined under IEEE 802.2 and 802.3 standards. It is the most widely used LAN technology family used today. Ethernet and the OSI model The ethernet family of protocols operates at both layer 2 (data link layer) and layer 1 (physical layer) of the OSI model. They are defined in the IEEE 802.2 and 802.3 standards. LLC sublayer The LLC sublayer is used to communicate with the upper protocol layers of the OSI model. It takes the protocol data units (PDUs) from the upper layers, which are typically IPv4 packets and adds control information to help deliver the data to its destination. LLC sublayer is implemented in software, and its implementation is hardware agnostic. An example of the LLC can be considered the network driver software of a server's NIC. The NIC driver is a software program that interacts directly with the NIC hardware and passes the data between the MAC sublayer and the phys
