PPP in Computer Networks Explained | Generated by AI
In computer networks, PPP (Point-to-Point Protocol) is a data link layer protocol used to establish a direct connection between two nodes. It is commonly used for dial-up internet access, broadband connections, and other point-to-point links.
Key Features of PPP:
- Encapsulation: PPP encapsulates network layer protocols (like IP) for transmission over point-to-point links.
- Authentication: Supports authentication protocols such as PAP (Password Authentication Protocol) and CHAP (Challenge-Handshake Authentication Protocol).
- Error Detection: Uses mechanisms like CRC (Cyclic Redundancy Check) to detect errors in transmitted data.
- Multi-protocol Support: Can carry packets from multiple network layer protocols (e.g., IP, IPX, AppleTalk).
- Link Control: Manages connection establishment, maintenance, and termination.
Common Use Cases:
- Dial-up internet connections (e.g., modem-to-ISP).
- Broadband connections (e.g., DSL, cable modems).
- Virtual Private Networks (VPNs) over point-to-point links.
PPP is widely used because of its simplicity, flexibility, and support for both synchronous and asynchronous communication.