Computer Systems Technology CIS701 Chapter 5: Chapter 5 - Ethernet
12 Feb 2017
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Document Summary
Ethernet is now the predominant lan technology in the world. Ethernet operates in the data link layer and the physical layer. It is a family of networking technologies that are defined in the ieee 802. 2 and 802. 3 standards. Ethernet relies on the two separate sublayers of the data link layer to operate, the. Logical link control (llc) and the mac sublayers. Logical link control (llc) takes network protocol data, which is typically an ipv4 packet, and adds control information to help deliver the packet to the destination node. Used to communicate with the upper layers of the application, and transition the packet to the lower layers for delivery. Can be considered the driver software for the nic. Data encapsulation - frame assembly before transmission, and frame disassembly upon reception of a frame. In forming the frame, the mac layer adds a header and trailer to the network layer pdu.
