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Showing posts with label nodes. Show all posts
Showing posts with label nodes. Show all posts

Mesh Topology

11:20 AM kdhakal 0 comments
A mesh topology is a computer network in which every node has a dedicated point-to-point connection to every other node in the network. A mesh topology has n*(n-1)/2 routes that connect 'n' devices in the network. Mesh topology work on the concept of routes. Message that is to be delivered to the destination can take any possible shortest and easiest routes that it can find.




mesh topology
Mesh Topology

Advantages of Mesh topology

  • As it has multiple routes between the source and the destination, if one route fails, there would be a number of other routes through which data transfer can take place.
  • Traffic problem is minimized in this topology.
  • Troubleshooting is easier compared to other networks like star and ring.
  • Heavy load of data transfer has little impact on the performance of this topology.
  • This network can be easily expanded without affecting the existing users.

Disadvantages of Mesh topology

  • It is expensive as it requires more cable than other topologies.
  • Installation is difficult and complicated.

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    Ring Topology

    12:37 PM kdhakal 0 comments
    A ring topology consists of network of computers in which each node connects to exactly two other nodes.This forms a single continuous path for the flow of signals through each nodes of the network. Data travels from node to node, with each node along the way handling every packet. Each of the nodes in the ring topology are connected to each other through only one pathway, so the failure of only one link disrupts the whole network.
    To overcome this fallacy, the data in a ring topology is transmitted both clockwise and counter clockwise, so that if there is single break of the cable, all the nodes on both sides can be reached.




    Ring Topology
    Ring Topology




     Advantages of Ring Topology

    • It is an orderly network in which all the nodes in the network have equal access to all the resources.
    • Its performance is far better compared to star topology under heavy network.
    • It does not need network servers to manage the connections.
    Disadvantages of Ring Topology

    • If one of the workstations fails to operate, it may lead to the unusability of the whole network.
    • Addition and removal of devices in the network can affect the entire network.
    • Ring network is slower than  the Ethernet network.

     





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    Star Topology

    2:07 PM kdhakal 0 comments
    A star topology consists of a central connection hub to which devices are connected with UTP (Unshielded Twisted Pair) Ethernet. Contrary to the bus topology, a star topology utilizes a point-to-point connection to connect each node to the central hub. The hub acts as a signal booster as well, and all the data traffic that transverses the network passes through this hub.
    The entire network is dependent upon the central hub in a star topology, so if the entire network is not working, it means that there is problem in the hub. This makes it easy to troubleshoot the network because of the only one point for error correction. As all the computers in star topology are independent to each other and dependent only on the central hub, network failure or other network problems are less likely to happen. The privacy of each of the computers is also maintained in this topology.
    In star topology, new devices and nodes can be easily added and by just extending a cable from the hub.


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    Advantages of star topology:
    • A star topology is simple in functionality and easy to manage.
    • If a problem occurs in the network, it can be easily isolated and cleared.
    • It is very easy to expand the star topology because of its simple format.

    Disadvantages of star topology:
    • The entire network of the star topology is completely dependent on the hub. If the hub fails, the whole network fails.
    • Network connection may slow down when the number of nodes increases or the cable lengthens.
    • Star topology needs more cable length than other topologies.
    • It is more expensive compared to bus topology.






    star topology
    Star Topology








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