Ethernetkehyksiä

Ethernetkehyksiä is the Finnish term for Ethernet frames. An Ethernet frame is a data packet that is transmitted over an Ethernet network. It is the basic unit of transmission in Ethernet and contains the data to be sent, as well as control information that allows the receiving device to interpret the data correctly.

A typical Ethernet frame consists of several fields, including a preamble, start of frame delimiter, destination MAC address, source MAC address, EtherType, payload, and frame check sequence. The preamble and start of frame delimiter are used for synchronization between the sender and receiver. The MAC addresses identify the source and destination devices on the local network. The EtherType field indicates the protocol of the data contained in the payload, such as IP or ARP. The payload is the actual data being transmitted, and its size can vary. Finally, the frame check sequence is used for error detection to ensure the integrity of the transmitted data.

Ethernet frames are crucial for the functioning of local area networks (LANs). They enable devices to communicate with each other by packaging data into a standardized format that can be understood by all devices on the network. The specific structure and size of Ethernet frames are defined by the IEEE 802.3 standard, which ensures interoperability between different Ethernet devices and manufacturers. Understanding Ethernet frames is fundamental to comprehending how data is transmitted and received in wired network environments.