Ring network
Both Token Ring and FDDI use the concept of a ring topology structure. However, Token Ring is used in a LAN, and FDDI is used in a MAN.Token Ring is implemented with copper cable (UTP cable) and FDDI uses Fiber Optic cable.Finally, the protocols are very different between the two. FDDI uses a synchronous type of transmission, where Token Ring uses an actual token (a 3 character packet) to control who has access to transmit or receive on the network. FDDI does not use this technique.
FDDI is a dual-ring structure, usually found in MANs (metropolitan area networks). Although it has a physical ring structure it is not the same as a token ring network.
Fddi can be further connected to other networks whereas token ring is individual network of computers.
16mbps
FDDI 1 vs FDDI 2Fiber Distributed Data Interface (FDDI) is a data transmission standard for Local Area Networks (LAN) which uses fiber optic lines. A FDDI LAN can extend up to 200 kilometers and it can support thousands of users. The FDDI 1 protocol is based on the token ring protocol. FDDI 2 is an extended version of FDDI. It extends FDDI by adding capability to handle voice and video signals.Difference between FDDI 1 and FDDI 2 (FDDI ii)FDDI-2 is the second generation protocol of FDDI. The key difference between them is that, in addition to all the functionality FDDI provides, FDDI-2 provides the ability to handle voice signals and video. Even though both FDDI and FDDI-2 runs at 100 Mbits/sec on the fiber and transport asynchronous and synchronous types of frames, FDDI-2 can transport isochronous traffic using the newly developed hybrid mode. Further, FDDI and FDDI-2 stations can be operated in the same ring only in the basic FDDI mode
Although they both use a rotating ring setup, the FDDI uses two to achieve better results and less chance of failure. FDDI also uses a timed protocol that leads to differences in frame format and how station traffic is controlled.
Topology: physical ring of trees, logical ring
Token Ring and FDDI networks can.
FDDI Advantages: ~Supports real time allocation of network bandwidth. ~Supports a lot of different types of network traffic. ~Is fault-tolerant because it uses dual fiber cables. If one cable fails FDDI moves the data to the other dual cable. FDDI Disadvantages: ~It's expensive ~There is always a chance of multiple ring failures and as the ring grows, that chance increases. ~It's not used frequently due to cost, companies prefer to use copper (CDDI) if they are taking the ring approach.
token ring uses a physical star and a logical ring ,while FDDI uses a physical star/ring and a logical ring.
FDDI