To add new nodes to the ring network, a cable is used to connect the new device to the hub without influencing the rest of the network. 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.
Full Answer The difference between physical and logical topology is present and can be demonstrated in a shared Ethernet network that employs hubs instead of switches. When a node goes down the information continues to transfer till the damaged node. Key Differences Between Star and Ring Topology In the star topology, each device is connected to a central node which sends the information received from one device to the other and act as a mediator.
It also makes fault identification and isolation easier. 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. It shows that every node actually connects to a central hub on the network.
In Star topology, the controller plays an important role and act as a mediator. However, its physical topology reveals a star-shaped connection.
With this type of connection, the logical topology looks as if each node is connected into the same bus.
The other nodes are affected only in the case of a hub failure. Troubleshooting in the ring topology is simple, as the information continues to transfer through the rest of ring until reaching the point of failure.
There is no direct link exists among the devices.
That is the reason it is easy to install and reconfigure. As against, in the ring topology, the data passes through each node unidirectionally until it reaches the destination.
It passes a signal in only one direction from one device to other until it reaches the device sent the signal. In ring topology, devices are attached to one another in a ring shape to have each device connected to another on each of its two sides. On the contrary, the addition of new devices is done by breaking a connection which results in temporary unserviceable network till the new device is activated.
The addition, deletion, replacement of the devices involves only one connection that is between that device and the hub. In contrast, each node in the ring topology is considered to be a point of failure as the failure of any device could significantly affect whole ring network.
Conversely, in the star topology, the other devices are affected only when the connecting device goes down Hub. Definition of Ring Topology The 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.
The star topology requires more cable than ring topology. It is dissimilar to mesh topology which allows direct traffic between the devices. Conclusion The star topology is used to connect primary-secondary type of connection whereas ring topology is used for peer-to-peer connections.
This topology is robust where even if the link fails, only that link is influenced and the other links remain active. On the other hand, in the ring topology, each device has two nodes connected to either side of it, and the last node is connected to the first one.
While star topology has devices connected to a central hub, bus topology has devices connected to a central cable bus.
On the other hand, groups of networks in a star-shape are connected to a bus in hybrid topology. 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.
Cost Low Definition of Star Topology Star 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.
Physical topology can be categorized into five different types: Fault isolation is easier in star topology while it is quite difficult in the ring topology. Hub in the star topology is considered as a point of failure because the failure of any device would not affect the whole network, but if hub goes down, no data is transmitted across it.
This example emphasizes the fact that differences in physical and logical topology are only in perspective.
Ring topology is easy to install and configure as each device is linked to its immediate neighbour. In mesh topology, each node is connected to every other node to create several redundant interconnections.
A signal is circulated continuously, if any device does not receive a signal within a specified time it can issue an alarm. Hub observes link problems and bypasses faulty links.
In a star topology, all the data travels through the central hub. A repeater is installed in each device in the ring. Star topology is expensive than the ring because it requires central connecting device usually hub.Differences between physical and logical topology Home › layer 1 › Differences between physical and logical topology When you read this and this articles, there is.
At the same time, the logical topology indicates how data is managed in the network irrespective of its physical topology. Physical Vs Logical Topology: The potentials of the network access devices and media decides the physical topology of a network. The difference between physical and logical topology is present and can be demonstrated in a shared Ethernet network that employs hubs instead of switches.
With this type of connection, the logical topology looks as if each node is connected into the same bus. Describe the difference between physical network topology and logical network topology.
Physical topologies refer to the physical layout of devices and network media.
Logical topologies refer to the logical paths in which data accesses the media and transmits packets across it. In the field of networking, when you use the word physical topology, you refer to the real arrangement of the elements in your network, i.e. the situation of every computer, switch, router and any other electronic system, using real measures of distance between them, and also their real position.
A logical topology describes how network devices appear to be connected to each other. For example, in a logical diagram of your office network, you may show a connection between city A and city B.Download