Describe the relationship between managed and non-managed Switches

A Management Switch and a hub are important devices connecting to the local area network. A management switch is a network device used for electrical signal forwarding. It can provide exclusive electrical signal channels for any two network nodes connected to the vswitch.

It is a hub upgrading product. In terms of appearance, it is basically no different from the hub. It is a rectangular box with multiple ports. A vswitch is a technology collectively referred to as a technology that sends the information to be transmitted manually or automatically by devices to a route that meets the requirements. A vswitch in the broad sense is a device that implements information exchange in a communication system.

This article starts with the concepts and types of vswitches and hubs, analyzes their differences from the surface layer, and then introduces their OSI architecture and working methods, bandwidth and performance.

This article focuses on the analysis of essential issues such as the performance of switches and hubs, and discusses in detail the differences between switches and hubs through theories and instances. To sum up, this article fully discusses the differences between vswitches and hubs from the outside to the inside, from the surface to the essence.

In today's global network era, networks have become essential for human life. As an important device for LAN Construction: Management switches and hubs play a "pivot" role in LAN data transmission. So what is the difference between a vswitch and a hub?

The so-called vswitch is actually developed from the hub technology. If the difference between a vswitch and a hub is described in the simplest language, it should be the difference between intelligence and non-intelligence. To put it bluntly, the hub is only a device connected to multiple computers. It can only play the role of signal amplification and transmission, but cannot process the fragments in the signal, so it is very prone to errors during transmission.

A switch can be considered as an intelligent hub. It not only includes all the features of the hub, but also has the functions of automatic addressing, switching, and processing. In addition, only the sending source and receiving source work independently during the transmission process, and do not have a relationship with other ports, so as to prevent data loss and improve throughput.

Next, I will analyze and explain the differences between a vswitch and a hub on basic issues such as the concept, type, characteristics, OSI architecture, and working mode.
The English name of a vswitch is "Switch". It is an upgraded product of a hub. In terms of appearance, it is basically no different from a hub, all are rectangular boxes with multiple ports. The switch is required to transmit information at both ends of the communication.

The technology collectively referred to as the process of manually or automatically transmitting the information to a route that meets the requirements. A vswitch in the broad sense is a device that implements information exchange in a communication system. A hub is a connection device connecting multiple computers or other devices in a computer network. It is the smallest unit for centralized management of the network.

A hub is a collection of branches, just like the trunk of a tree. Many types of networks rely on hubs to connect devices and distribute data to different network segments. The HUB is basically a shared device, and its essence is a repeater. It mainly provides signal amplification and transfer functions. It distributes all signals received by a port to all ports.

2. Switch and hub types vswitches and hubs are classified in different ways and angles. There are multiple types of hubs. Each type has specific functions and provides services of different levels. Based on the bandwidth of the bus, the HUB is divided into 10 M, M, and 10 M/M adaptive. If the configuration form is different, it can be divided into three types: Independent, modular, and stacked.

Depending on the number of ports, there are eight ports, 16 ports, and 24 ports. There are two types of work modes: intelligent and non-intelligent. Currently, the HUB is basically a combination of the first three categories, such as the 10 M/M Adaptive intelligence and stackable HUB that we often see in advertisements.

There is a general significance for Distinguishing Based on the working method. Four types can be further divided: passive hub, active hub, smart hub, and switch hub. Vswitches are classified into access layer switches, aggregation layer switches, and core layer switches according to the complex network composition.

Among them, all core layer switches adopt the modular design of the chassis. At present, we have basically designed the 1000BASE-T module. The purchase of core layer switches will not be discussed in this article. The ethernet switch that supports 1000BASE-T on the access layer is basically a fixed-port switch, with a 10/100 Mbps port as the main type, and provides a 1000BASE-T uplink port through a fixed port or expansion slot.

The 1000BASE-T switch of the aggregation layer has two types of designs: the Chassis type and the fixed port type. It can provide multiple 1000BASE-T ports, and generally other ports such as 1000BASE-X. The access layer and aggregation layer switches form a complete small and medium LAN Solution.

According to the layer-7 network model of OSI, switches can be divided into layer-2 switches, layer-3 switches, layer-4 switches, and so on until Layer-7 switches. Layer 2 Switches Based on MAC addresses are the most common and used for the network access layer and aggregation layer.

Layer-3 switches based on IP addresses and protocols are widely used in the core layer of the network, and a small number of switches are also used in the aggregation layer. Some layer-4 switches also have the layer-4 switching function. You can determine the target port based on the protocol port information of the data frame. A layer-4 or above vswitch is called a content-type switch. It is mainly used in Internet data centers and is not covered in this article.

According to the manageability of vswitches, they can be divided into manageable vswitches and non-manageable vswitches. The difference between the two is that they support network management protocols such as SNMP and RMON. Manageable switches Facilitate network monitoring, but the cost is also relatively high.

The management switch should be selected for large and medium-sized networks at the aggregation layer. The access layer depends on the application requirements. All the switches at the core layer are managed switches. The characteristics of a switch and a hub are in the star structure. It is the intermediate node of the connection, and plays the role of amplifying the signal. All devices share the bandwidth of the Hub. That is to say, if the bandwidth of the hub is 10 M, 10 devices are connected, and each device is 1 M. All the ports of the Hub share a MAC address.

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