Network Topology
Download as PPTX, PDF
2 likes465 views
The document discusses different network topologies including bus, star, ring, mesh, and tree. It defines network topology as the layout of how computers or workstations are connected in a network. The main types of network topologies are then described in detail, outlining their basic structures and advantages and disadvantages of each design.
Network Topology
- 2. NETWORK TOPOLOGY The Topology of the network refers the way, computers or work stations in the networks are linked together. Generally topology is meant as the structure in which the network is laid out. According to the physical arrangements of the work stations and the nature of work, topology network can be divided into 5 types:- I. Bus Topology II. Ring Topology III. Tree Topology IV. Star Topology V. Loop or Mesh Topology
- 3. BUS Topology: In this topology, all the work stations are connected to single communication line called Bus. The transmission from any two station travels the length of the bus in both the direction and can be received by all work stations. Advantages - 1. If one station of the topology fails, it does affect the entire system. 2. It is quite easy to use. Disadvantages - 1. Any Break in this topology is difficult to identify. 2. It is not suitable for the networks with heavy traffic.
- 4. Node Node Node Node Node Fig : BUS Topology
- 5. STAR Topology; In star topology, number of nodes are directly linked to a central node. Any communication between stations on a star LAN pass through the central node. There is a bi - directional communication between various work stations. The central controls all the activities of the node. Advantages : 1. It offers flexibility of adding or deleting of work system. 2. Every computer has multiple possible connections path to other computers. Disadvantages : 1. Signal travels through the Hub (Server file) to all other computers, it requires more cables.
- 6. Node Node File Server Node Node Fig. : STAR Topology
- 7. RING Topology; In a ring topology network, the computers are connected in the form of closed network. A ring topology is a LAN architecture that consists of a series of devices or work stations connected to form a ring. Whenever the message is passed, the message contains the information and the address of the node. This network is fast and expensive. 1. Any signal transmitted on the network passes through all the nodes. 2. Each computer has equal access to resources. Disadvantages : 1. The breakdown of any one station on the ring can disable the entire system. Advantages :
- 8. Node Node Node Node Fig. : RING Topology
- 9. MESH Topology : In mesh topology network, evcery computer is connected to each other. Meshes use significantly larger amount of network cabling than to do other network topologies which makes it more expensive. Advantages : 1. This topology is highly fault tolerant. 2. Every computer multiple possible connections path to other computers. Disadvantages : 1. It is very complicate to design. 2. Maintenance of this topology is very difficult.
- 10. Node Node Node Node Node Node Fig. : MESH Topology
- 11. TREE Topology : This topology integrates multiple star topologies together onto a bus. It is also known Hierarchical Topology. It has a central node which is connected to one or more nodes of higher hierarchy. In this topology, nodes are connected in a tree structure and messages are broadcast across the whole tree. Advantages : 1. If one segment is damaged, other segments are not affected. 2. Expansion of network is possible an d easy. Disadvantages ; 1. As more and more segments are added, the maintenance becomes difficult.
- 12. Node Node Node Node Node Node Node Fig. : TREE Topology
- 13. A Presentation By: Rohan Raj (OURA12101048)