HDLC stands for High-Level Data Link Control. It is a standard protocol used for communication between computers or devices in a network. HDLC is a data link layer protocol used for transmitting data packets reliably and efficiently across different types of networks.
HDLC is a synchronous protocol, meaning that data is sent in a specific sequence and timing. It ensures correct transmission of data by framing the data packets, checking for errors, and ensuring flow control between devices. It offers features like error detection, flow control, and retransmission of lost or damaged data.
HDLC operates in a point-to-point or multi-point network configuration. It assigns roles to devices on the network, typically distinguishing between a primary station and one or more secondary stations. The primary station controls the data transfer between all the connected stations.
In HDLC, data is sent in frames that consist of control information and payload data. The control information includes fields for addressing, error detection, and flow control. The payload data contains the actual information to be transmitted.
HDLC has been adopted as the basis for other protocols, such as the widely used Point-to-Point Protocol (PPP). It is commonly used in various communication technologies, including wired and wireless networks, satellite systems, and telecommunication systems.
Overall, HDLC provides a robust and efficient mechanism for transmitting data between devices in a network, ensuring reliable and error-free communication.
