PPP

🖧 HDLC (High-Level Data Link Control) HDLC is a bit-oriented data link layer protocol used for synchronous data communication. Framing: HDLC frames are used to send data between devices. Error Control: It uses both error detection and error correction techniques, specifically CRC. Flow Control: Employs sliding window technique for managing the flow of data. Types of HDLC Frames: Information Frames (I-frames): Carry user data. Supervisory Frames (S-frames): For error control and flow management. Unnumbered Frames (U-frames): Used for link setup and control. HDLC provides a robust framework for managing reliable communication over unreliable channels. ...