Hub là gì?

What is the Hub definition? What is hub concentrator?

When referring to a computer network , a hub is the most basic network device that connects many computers or other network devices together. Unlike switch switches or routers , network hubs do not have a routing or smart table of where to send information and broadcast all network data on each connection.

Today there are very few Hub manufacturers, but instead are Switch products to use that you can refer to as (danh mục sản phẩm tiêu biểu thay hub) Industrial Ethernet Switch: Cisco 2960+ Fast EthernetCisco 9200L Gigabit EthernetCisco 2960X Gigabit Ethernet

Most hubs can detect basic network errors such as collisions, but transmitting any information transmitted to multiple ports can be a security and congestion risk. In the past, network hubs were popular because they were cheaper than a switch or router. Today, switches do not cost more than a hub and are a better solution for any network.

You choose Switch layer 2 or Switch layer 3 Cisco

What does a core switch do? What is the difference with access switch?

What is a switch? What is the function of the switch? Advantages of choosing a switch

What is a router? How does a router router work?

A hub, also called a network hub, is a common connection point for devices on the network. Hubs are devices commonly used to connect segments of the LAN. The center contains many gates. When a packet arrives at a port, it is copied to other ports so that all segments of the LAN can see all packets.

What is the hub
Image: What is a hub

What does the hub do? Hub’s cons?

Hub and switch act as a central connection for all your network devices and handle a data type called frames. Frame brings your data. When it receives a frame, it is amplified and then transmitted to the port of the destination computer.

In a  hub concentrator , a frame is transmitted or “broadcast” to all its ports. It does not matter that the frame is destined for only one port. The hub has no way to tell which ports to send. Passing it to all ports ensures that it will reach its intended destination. This puts a lot of traffic on the network and can lead to poor network response time.

Compared to a standard switch, a hub is slower because it can send or receive information not only at the same time, but often costs more than a hub.

Passive Hub, Smart Hub, Hub and Switch

A passive Hub serves simply as a conduit for data, allowing it to go from one device (or segment) to another. The so-called Smart Hub includes additional features that allow administrators to monitor traffic passing through the hub and configure each port in the hub. Smart hubs are also called manageable hubs.

A third type of hub, called a hub switch, actually reads the destination address of each packet and then forwards the packet to the correct port.

Hub for small businesses

The hub can be used as a standalone device or connected to compatible hubs and switches to form a larger network. Hubs are generally easy to install and maintain, making these devices a good choice for home networks. A hub is also easily configured for small business networks.

Some technicians tend to use the terms router, switch and hub interchangeably, but have you ever wondered what the difference is?

Some technicians tend to use the terms router, hub and switch interchangeably. One minute they are talking about a switch and discuss the next router settings. However, during the conversation, they still see only one box. Have you ever wondered what is the difference between these devices?

The functions of the three devices – routers, switches and hubs – are all different, even if they are integrated into a single device. What device do you use and when do you use it?

What is the hub?
Image: what is the hub

What is the role of the hub? What is the function of the hub?

Each device acts as a Hub connection for all your network devices and processes a data type called frames. Frame brings your data. When it receives a frame, it is amplified and then transmitted to the port of the destination computer. The big difference between these two devices is the method in which the frame is distributed.

In a hub, a frame is transmitted or “broadcast” to all its ports. It does not matter that the frame is destined for only one port. The hub has no way to tell which ports to send. Passing it to all ports ensures that it will reach its intended destination. This puts a lot of traffic on the network and can lead to poor network response time.

In addition, a 10 / 100Mbps hub must share its bandwidth with each and all its ports. So when there is only one broadcast PC, it will have access to the maximum available bandwidth. However, if multiple computers are broadcasting, that bandwidth will need to be shared among all those systems, which will reduce performance.

However, a switch keeps a record of the MAC addresses of all devices connected to it. With this information, a switch can determine which system is sitting on which port. So when a frame is received, it knows exactly which port to send it to, without significantly increasing the network response time.

And, unlike a hub, a 10 / 100Mbps switch will fully allocate 10 / 100Mbps for each of its ports. Therefore, regardless of the number of computers transferred, users will always have access to the maximum amount of bandwidth. It is for these reasons that a switch is considered to be a much better option than a hub.

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See useful articles: What is a hub?   What is a switch?   What is a router?

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