Shulou(Shulou.com)05/31 Report--

Hello everyone, Lin Fei to answer the above questions for everyone, network topology, network topology many people do not know, now let us take a look at it!

1. When it comes to network topology, many people will have a headache. In fact, network topology is very vivid and simple. As long as you understand the tricks, you can easily and happily master the characteristics of each topology. Let's look at what topology exists in the network.

2. What is topology

3, topology, as the name suggests, is the shape. Topology is a term derived from geometry and is a method of studying relationships between points, lines, and surfaces independent of size and shape. That is, the physical layout of various devices interconnected by transmission media, that is, how computers and other devices in the network are connected. This structure is called the mesh topology of the network. Network topology can be divided into bus topology, ring topology, star topology, tree topology and mesh topology.

4. Topological structure classification

5. Bus topology

The structure of bus topology is that all devices in the network are connected by a common bus, and information is transmitted through bus broadcasting when communicating. This structure has the advantages of less investment, easy installation and wiring, and the failure of any node in the network will not cause the collapse of the whole network. The fault reliability is high, and the disadvantage is that information congestion is easy to occur when the number of nodes is large.

7. Ring topology

In a ring topology, all devices are connected into a ring through which information is broadcast. The transmission path of this structure is fixed, and there is no problem of path selection, so it is easy to implement. Disadvantages are that any node failure will lead to the entire network paralysis, poor reliability; network management complex, relatively high investment costs.

9. Star layout

A star topology consists of a central node and several slave nodes. The central node can communicate directly with the slave nodes, and communication between slave nodes must be forwarded by the central node. The star topology is simple, the network is easy to build, and the transmission rate is high. Good scalability, flexible configuration, easy network maintenance and management, but the reliability of star network depends on the central node, once the central node fails, the whole network will be paralyzed.

11. Tree Layout

12. Tree topology is actually an extension of star structure, which is an inverted tree hierarchy with root nodes and branch nodes. Nodes are connected hierarchically, and information exchange occurs mainly between upper and lower nodes. It is characterized by flexible structure and easy network expansion. However, similar to the star structure, once the root node goes down, it will affect the entire network. Tree topology is a topology commonly used in medium and large local area network.

13. Mesh topology

14. Network topology is divided into general mesh structure and fully connected mesh topology. In a typical mesh topology, each node is directly connected to at least two other nodes. Each node in a full mesh topology is connected to all other nodes. Its biggest characteristics are strong fault tolerance and high reliability, but the corresponding network construction cost is high and wiring is difficult.

15. Outline topology

In practice, topology is figuratively described as abstract network elements such as workstations, servers, switches, etc. As "points," and the transmission medium in the network as "lines," so the computer network system becomes a geometric figure composed of points and lines. Bus topology is a common local area network topology, but it is not suitable for complex networks. Star and tree topologies are the most common structures in current networks. Ring and mesh topologies are used only in a few cases because of their high network construction costs.

This article is finished and I hope it helps everyone.

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