Why is star topology better than ring topology?
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There are number of topologies in computer networking, star topology, ring topology, bus topology and mesh topology. Difference Between Ring Topology & Star TopologyIn star topology multiple nodes can only do their communication by using a central hub whereas in ring topology there is a direct communication link between two nodes, No central technology use that transfer their data. Ring Topology
Ring Topology Advantages:
Ring Topology Disadvantages:
Star TopologyA type of topology where CPU’s are connected via medium called hub. A topic which you need to read on Star Topology.
Star Topology Advantages:
Star Topology Disadvantages:
The link is shared equally in the peer-to-peer connection. Inversely, in a primary-secondary relationship one device is used to control traffic and other devices must transmit the signal through it. Content: Star Topology Vs Ring Topology
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Definition of Star TopologyStar Topology is the network architecture in which each device has a dedicated point-to-point link only to the central controller known as a hub. There is no direct link exists among the devices. It is dissimilar to mesh topology which allows direct traffic between the devices. In Star topology, the controller plays an important role and act as a mediator. When a device wants to send data to another, it first sends data to the controller which then relays the data to other connected devices. Star topology needs only one link and I/O port to connect a device to another. That is the reason it is easy to install and reconfigure. The addition, deletion, replacement of the devices involves only one connection that is between that device and the hub. The cabling requirements are less in the star topology, but it is greater when we compare it with other topologies such as tree, ring and bus. This topology is robust where even if the link fails, only that link is influenced and the other links remain active. It also makes fault identification and isolation easier. Hub observes link problems and bypasses faulty links. Definition of Ring TopologyThe Ring Topology connects each device with dedicated point-to-point line configuration to other two adjacent devices, and the first device connects to the last device. It passes a signal in only one direction from one device to other until it reaches the device sent the signal. A repeater is installed in each device in the ring. If a device receives a signal meant for another device, the device regenerates the bits and boosts the signal by using a repeater that is installed on each device and transfers them along. When the signal reaches the destination, the receiver sends back an acknowledgement to the sender. Ring topology is easy to install and configure as each device is linked to its immediate neighbour. The addition, deletion and repositioning of a device just require changing only two connections. The only limitations are the traffic and media considerations, i.e., the maximum length of the ring and the number of devices. The fault isolation in a ring can be simplified by using an alarm which alerts the network operator to the problem and its location. A signal is circulated continuously, if any device does not receive a signal within a specified time it can issue an alarm. Though, unidirectional nature of traffic can be disadvantageous for the network where even a single faulty cable can disable the entire network. This limitation can be overcome by employing a switch or a dual ring that is able to closing off the break.
Key Differences Between Star and Ring Topology
ConclusionThe star topology is used to connect primary-secondary type of connection whereas ring topology is used for peer-to-peer connections. |