- DCN Tutorial
- Data Comm & Networks Home
- DCN - Overview
- DCN - Computer Network Types
- DCN - Network LAN Technologies
- DCN - Computer Network Topologies
- DCN - Computer Network Models
- DCN - Computer Network Security
- Physical Layer
- DCN - Physical Layer Introduction
- DCN - Digital Transmission
- DCN - Analog Transmission
- DCN - Transmission media
- DCN - Wireless Transmission
- DCN - Multiplexing
- DCN - Network Switching
- Data Link Layer
- DCN - Data Link Layer Introduction
- DCN - Error detection and Correction
- DCN - Data Link Control & Protocols
- Network Layer
- DCN - Network Layer Introduction
- DCN - Network Addressing
- DCN - Routing
- DCN - Internetworking
- DCN - Network Layer Protocols
- Transport Layer
- DCN - Transport Layer Introduction
- DCN - Transmission Control Protocol
- DCN - User Datagram Protocol
- Application Layer
- DCN - Application Layer Introduction
- DCN - Client-Server Model
- DCN - Application Protocols
- DCN - Network Services
- DCN Useful Resources
- DCN - Quick Guide
- DCN - Useful Resources
Fiber Distributed Data Interface (FDDI)
Fiber Distributed Data Interface (FDDI) is a set of ANSI and ISO standards for transmission of data in local area network (LAN) over fiber optic cables. It is applicable in large LANs that can extend up to 200 kilometers in diameter.
Features
FDDI uses optical fiber as its physical medium.
It operates in the physical and medium access control (MAC layer) of the Open Systems Interconnection (OSI) network model.
It provides high data rate of 100 Mbps and can support thousands of users.
It is used in LANs up to 200 kilometers for long distance voice and multimedia communication.
It uses ring based token passing mechanism and is derived from IEEE 802.4 token bus standard.
It contains two token rings, a primary ring for data and token transmission and a secondary ring that provides backup if the primary ring fails.
FDDI technology can also be used as a backbone for a wide area network (WAN).
The following diagram shows FDDI −
Frame Format
The frame format of FDDI is similar to that of token bus as shown in the following diagram −
The fields of an FDDI frame are −
Preamble: 1 byte for synchronization.
Start Delimiter: 1 byte that marks the beginning of the frame.
Frame Control: 1 byte that specifies whether this is a data frame or control frame.
Destination Address: 2-6 bytes that specifies address of destination station.
Source Address: 2-6 bytes that specifies address of source station.
Payload: A variable length field that carries the data from the network layer.
- Checksum: 4 bytes frame check sequence for error detection.
End Delimiter: 1 byte that marks the end of the frame.
- Related Articles
- Difference between Centralized Data Storage and Distributed Data Storage
- What is FDDI in the Computer Network?
- Data Over Cable Service Interface Specification (DOCSIS)
- State difference between plant fiber and animal fiber.
- Fiber Cables
- Distributed Systems
- Distributed database
- Fiber Optic Communications
- What is fiber?
- Creating SAP interface to pull data from web application
- Distributed operating System
- Is jeans or denim a natural fiber or a synthetic fiber?
- Cable, ADSL, and Fiber
- Fiber Optics vs Satellites
- Fiber To The Home
