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COMPUTER NETWORKS TOPOLOGY || MESH, BUS, STAR, RING AND HYBRID TOPOLOGY
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Hello everyone! ! I hope you have read my previous post. So obviously, any communication network is basically made up of nodes and links. Hence, the term network topology is used to explain how the network is physically connected. Nodes (or devices) are connected by communication links that are related in one way or another. This associated geometric representation of nodes and links is called the “topology” of that particular network. These topologies can be mainly dived into two types:.
Point to point(Line configuration/Line topology)
If a line in the network is used by only two participants, it is called a line topology. The link is shared equally (sometimes called a peer-to-peer network). No (source and destination) addresses are required. Also, there are no collisions (due to overlapping messages), so there is no need for a multiple access scheme (explained in my future post). For example: ring and mesh topologies.
Multi point (multi drop)
When a line is used by three or more users, the line topology is called a multipoint network. Therefore, since many users use one line, separate source and destination addresses are required. Also, there is the possibility of collisions (overlapping messages), to avo such collisions we need to implement some multiple access (MA) scheme (like TDMA, FDMA, CDMA, CSMA or Carrier Sense MA). Now let’s look at the important types of network configurations (topologies)
Bus Topology
In a typical bus network, all devices (nodes) are connected by a single cable (no repeaters, so no amplification occurs). When a computer sends a signal, all other computers on the network receive the information, but only one computer whose address matches the destination address stored in the message accepts the information, and all other computers reject the message. Proper termination is required in this topology (to avo reflections of the transmitted wave) because without termination the signal will reach the end of the cable, come back and fly back again. Therefore, it is possible to generate standing waves in the network. This can be avoed by terminating the bus with a 50 Ω load impedance at both ends (to absorb reflections).
Ring Topology
In this topology, each node (computer) is connected to the next node (computer), and the last node is connected to the first node. Therefore, messages can only flow in one direction. Also, there is no termination because the ring does not end. Each device retransmits what it received from the previous device. In a typical ring network, all nodes coexist with the same number of repeaters. Data will travel around the ring in a one-way, sequential manner. Each repeater receives, regenerates and retransmits data bits. Rings are used for high-performance networks (such as audio and video) that require high bandwth.
Star Topology
You may already be familiar with master-slave networks (one device controlling the entire network). All devices are connected by cables to a centrally located device called a “hub”. A hub is a network device through which we can connect multiple devices. The main function of the hub is to send the received signal. Also, the hub cannot read the user address. Every device on the home network communicates with this central hub. Hubs in a network can be of two types, viz. H. Active and passive hubs. Active Hub: This hub generates and sends electrical signals to all computers connected to it. It requires an external power supply. It can regenerate the signal before splitting. Repeaters are dual-port devices, and powered hubs are multi-port devices. Passive Hub: This hub cannot regenerate the received signal. Only one partial pressure is possible. The signal is not amplified, so no power supply is required.
Mesh Topology
. In this network configuration, every device is physically connected to every other device through a point-to-point (dedicated) connection. A fully connected mesh network has n(n-1)/2 physical cables connecting “n” devices. Every device on the network must have “n-1” input/output ports. It proves more privacy and security. Even a single device failure does not bring the entire network to a standstill. Every message is transmitted over a dedicated connection, which simplifies troubleshooting.
Tree Topology
This configuration is nothing but an extension (variant) of the star network. With this type, the nodes in the network are also connected to a central hub that controls the entire network. However, not every device is connected to a central hub. Most of them connect to a secondary hub, which actually connects to a central hub. The central hub contains repeaters. Repeaters amplify the signal and increase the distance the signal can travel. The main advantage here is that more devices can be connected to the central hub, increasing the distance that the signal can travel between devices. The biggest downse here is that if the central hub fails, the system will crash.
Logical Topology
This describes the way stations are logically linked to exchange data units. For example, we can conser bus topology. The bus acts as a central controller. It receives data and forwards it to different nodes. This means that the stations have a logical connection to the bus, which acts as a central controller. Therefore, the logical topology of the bus is a star topology.
Hybr Topology
In this type, we combine two or more topologies. There are several ways to create a hybr network. Hybr configurations are application specific and depend on the needs of that application. Many complex networks can be reduced to some form of hybr topology. See you soon in my next article for a more detailed explanation of other interesting topics in this area. report this ad
What are the 5 types of topologies?
- Bus Topology. Bus topology is the kind of network topology where every node, i.e. every device on the network, is connected to a solo main cable line. …
- Ring Topology. …
- Star Topology. …
- Mesh Topology. …
- Tree Topology. …
- Hybrid Topology.
What are the 6 types of network topology?
- Bus Topology.
- Ring Topology.
- Star Topology.
- Mesh Topology.
- Tree Topology.
- Hybrid Topology.
What are the 8 network topologies?
Classification. The study of network topology recognizes eight basic topologies: point-to-point, bus, star, ring or circular, mesh, tree, hybrid, or daisy chain.
What are the 4 network topology types?
- Bus Topology. Bus topologies have the simplest layout. …
- Star Topology. In star topology, you use a central hub or switch as a sort of middleman for data transmission. …
- Ring Topology. …
- Mesh Topology.
What are the 7 types of network topology?
- P2P Topology.
- Bus Topology.
- Ring Topology.
- Star Topology.
- Tree Topology.
- Mesh Topology.
- Hybrid Topology.
What is computer tree topology?
A tree topology, or star-bus topology, is a hybrid network topology in which star networks are interconnected via bus networks. Tree networks are hierarchical, and each node can have an arbitrary number of child nodes.
What is topology and types?
Geometric representation of how the computers are connected to each other is known as topology. There are five types of topology – Mesh, Star, Bus, Ring and Hybrid.
What is ring topology?
Ring topology is a type of network topology in which each device is connected to two other devices on either side via an RJ-45 cable or coaxial cable. This forms a circular ring of connected devices which gives it its name. Data is commonly transferred in one direction along the ring, known as a unidirectional ring.
What are network topologies and its types?
Network topology refers to the physical or logical layout of a network. It defines the way different nodes are placed and interconnected with each other. Alternately, network topology may describe how the data is transferred between these nodes. There are two types of network topologies: physical and logical.
What is mesh topology?
Mesh topology is a type of networking where all nodes cooperate to distribute data amongst each other. This topology was originally developed 30+ years ago for military applications, but today, they are typically used for things like home automation, smart HVAC control, and smart buildings.
What are different types of network?
- PERSONAL AREA NETWORK (PAN)
- LOCAL AREA NETWORK (LAN)
- WIRELESS LOCAL AREA NETWORK (WLAN)
- METROPOLITAN AREA NETWORK (MAN)
- WIDE AREA NETWORK (WAN)
- STORAGE AREA NETWORK (SAN)
- VIRTUAL PRIVATE NETWORK (VPN)
What is star topology?
Star topology is a network topology in which each network component is physically connected to a central node such as a router, hub or switch. In a star topology, the central hub acts like a server and the connecting nodes act like clients.
See some more details on the topic Computer Network – Network Topology Types (Bus , Star , Mesh , Tree , Ring and Hybrid) – ElectronicsGuide4u here:
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In this post you can learn about,Computer Network – Network Topology Types.Different topologies has been described in luc manner for …
Computer Network Topology – Mesh, Star, Bus, Ring and Hybrid
Geometric representation of how the computers are connected to each other is known as topology. There are five types of topology – Mesh, Star, Bus, Ring.
Types of Network Topology: Bus, Ring, Star, Mesh, Tree …
Types of Network Topology: Bus, Ring, Star, Mesh, Tree Diagram … Two main types of network topologies in computer networks are 1) Physical …
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