This Paper was presented in my undergradute at GIKI in "Computer Communication and Networking" course. The presenters were Soban Jalil, Yusuf Ayub and Mohammad Ali Lotia.
INTRODUCTION
The Fiber Distributed Data Interface (FDDI) is a high speed general purpose network for connecting large computers, work stations, desktop computers, and other computing equipment. The FDDI standards were developed by the X33T9.5 Committee of the American National Standards Institute (ANSI). FDDI is both an interface technology and a protocol. Its local area network (LAN) is defined as a 100Mb/s, token passing, dual counter rotating ring network using optical-fiber medium. The FDDI specifications for other types of media are under development. The dual rings are independent until a fault occurs, in which case the rings are wrapped together in order to restore the ring to its operational state. The FDDI network can be used as a high-speed local network (HSLN) to interconnect large mainframe computers within a small area.
FDDI PROTOCOL ARCHITECTURE
FDDI MAC Protocol
MAC Protocol
Capacity Allocation
Requirements
Synchronous Traffic
Asynchronous Traffic
Ring Monitoring
FDDI PHYSICAL LAYER SPECIFICATION
Physical Layer protocol
Data Encoding
Timing Jitter
Physical Medium Dependent Sublayer Specifications
Topologies
Station Types
FDDI Topologies
Dual Homing
Optical Bypass
FDDI STATION MANAGEMENT
Connection Management
Ring Management
SMT Frame Services
FDDI-II
FDDI-II Architecture
Hybrid Mode
Cycle Format and Channels
Cycle Header
Operation
Initialization
Programming-Template Maintenance
COMPARISON OF DQDB AND FDDI
One may legitimately ask, "How does DQDB fare in comparison with FDDI?" This question has received a lot of attention and generated a lot of debate. The comparisons made were based on a variety of parameters, and the overall conclusion is that there is no clear winner. Although the two protocols essentially provide similar services, they have different characteristics, which lead to different performances.
Besides the topological differences, other differences can be considered in terms of parameters such as (1) throughput, (2) efficiency, (3) access delay, (4) response time, (5) priority, (6) fairness, (7) reliability, (8) network reconfiguration, and (9) compatibility.
Throughput
Efficiency
Access Delay
Response Time
Priority
Fairness
Reliability
Network Reconfiguration
Compatibility
FFOL
Real Life Applications of FDDI
Redevelopment by FDDI Speeds Medical Care
Who can manage a flood of images every day without drowning
FDDI and news travels faster
FDDI: The Auto Industry Solution
Stock Exchange Frankfurt/Germany implements high-speed with FDDI networking
FDDI Supports Italy's most influential business newspaper
CONCLUSION
