Difference between Bus and Ring topology

Distinguish, differentiate, compare and explain what is the difference between Bus topology and Ring topology. Comparison and Differences.

Differences between Bus and Ring topology

S.No. Basis of difference Bus Topology Ring Topology
1 Structure All computers / nodes are connected to a single central cable (backbone). All computers / nodes are connected in a loop.
2 Connection between nodes It has no connection between nodes but connect to backbone. It has connection between all the nodes.
3 Ease of trouble shooting Easy identification of cable faults. Easy to troubleshoot - Repair or remove the failing nodes.
4 Easy of adding or removing nodes Easy to implement and extend. New devices can be added to the backbone or to the existing nodes. Difficult because moves, adds and changes of devices can affect the network.
5 Node failure Failure of a node doesn"t affect the entire LAN as long as the backbone is working. A failing node will affect the entire LAN.

Bus Topology

In a bus topology, all devices are connected to one central cable called a bus. Data is transmitted from the source in both directions until it reaches its destination.

Types of Bus Tolpolgies

There are two types of bus topology:

  1. Linear: All devices are connected by a single bus with two endpoints.
  2. Distributed: The bus branches off into multiple sections, resulting in more than two endpoints.

Advantages of Bus Tolpolgy

  • Suitable for very small networks
  • Easy and affordable to add new devices
  • If one device fails, the rest of the network is not impacted

Disadvantages of Bus Tolpolgy

  • The bus cable is a potential single point of failure
  • Performance decreases as devices are added or traffic increases
  • Troubleshooting is difficult in larger networks

Ring Topology

In a ring topology, a daisy chain of connected devices forms a closed loop. Data travels in one direction from the source until it reaches its destination. An electrical token travels around the ring that a device must have before it can transmit data.

Types of Ring Tolpolgies

To provide redundancy and resiliency, there are variations of the ring topology such as:

  1. Dual/bidirectional ring: A second connection is made between devices.
  2. Counter-rotating ring: An additional ring in the opposite direction is activated if a switch fails.
  3. Collapsed ring: If a device fails, the ring collapses by connecting that device's peers to each other.

Advantages of Ring Tolpolgy

  1. Faster than a bus topology while still easy to add devices.
  2. Low likelihood of packet collision due to unidirectional data flow.
  3. No need for a network server to manage data transmission.

Disadvantages of Ring Tolpolgy

  1. Performance decreases as devices are added or traffic increases.
  2. Each device is a potential single point of failure unless redundancy is built in.
  3. The entire network needs to be taken offline to perform moves, adds, and changes.


Difference between Ring topology vs Bus

Bus vs Ring topology

Differences between Ring topology vs Bus

Image Credits: Freepik

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