Ring Topology

Ring Topology

What is ring topology in computer network?

In this types of topology, each computer is directly connected to the other computer within the same network.In below figure you can see that the network's data flow from computer back to the back to the source, with the network's primary cable forming a ring.

The problem is, the ring topology has a lot in common with the bus topology because if you want to the network, you have no choice but to break the cable ring, which is likely to bring down the entire network.

This is on big reason that ring topology isn't is popular you just won't run into it a lot as i did in the 1980s and early 1990s. It's also pricey because you need several cables to connect each computer, it's really hard to reconfigure, and as you've probably, it's not fault tolerant.

But even with all that being said, if you work ast an ISP, you may still find a physical ring topology in use for a technology called SONET or some other WAN technology. However, just won't find any LAN in physical rings anymore.

Ring Topology

Advantages:

1. Data is quickly transferred without a ‘bottle neck’.
2. This type of network topology is very organized. Each node gets to send the data when it receives an   empty token. This helps to reduces chances of collision. Also in ring topology all the traffic flows in only one  direction at very high speed
3. Adding additional nodes has very little impact on bandwidth
4. It prevents network collisions because of the media access method or architecture required.
5. Even when the load on the network increases, its performance is better than that of Bus topology.

Disadvantages:

1. Data packets must pass through every computer between the sender and recipient therefore this makes it slower.
2. If any of the nodes fail then the ring is broken and data cannot be transmitted successfully.
3. It is difficult to troubleshoot the ring.
4. Because all stations are wired together, to add a station you must shut down the network temporarily.
5. In order for all computers to communicate with each other, all computers must be turned on.
6. Total dependence upon the one cable.

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