By PURPLELEC | 29 July 2023 | 0 Comments
What are the types of hubs
The hub is also produced along with the network like the network card. It is produced earlier than the switch and earlier than the network equipment such as the router, so it belongs to a traditional basic network equipment. Since the development of hub technology, it has also experienced many historical development periods of different mainstream applications, so there are many different types of hub products.
1. According to the number of ports
This is one of the most basic classification criteria. At present, the mainstream hubs mainly include 8-port, 16-port and 24-port, but there are also a few brands that provide non-standard port numbers, such as 4-port and 12-port, and some have 5-port, 9-port, and 18-port hub products. , which is mainly to meet the needs of some users who have strict requirements on the number of ports and are relatively cautious in capital investment. Such hubs are generally used in homes or small offices, etc.
2. Divided by bandwidth
Hubs also have bandwidth. According to the bandwidth supported by hubs, we can usually divide them into three types: 10Mbps, 100Mbps, and 10/100Mbps.
3. According to the form of configuration
According to the configuration of the entire hub, it can generally be divided into three types: independent hubs, modular hubs and stacked hubs.
(1) Independent hub
This type of hub is the most common in low-end applications. The independent hub is a single box product with many ports. Most of the independent hubs can be connected together with a 10Base-5 coaxial cable to achieve extended cascading. This is mainly used in bus-type networks. Of course, it is also possible to use twisted pair cables to achieve cascade connection through ordinary ports, but it should be noted that the network cable jumper method used is different. The independent HUB has the advantages of low price, easy to find faults, convenient network management, etc., and is widely used in small LANs. But the work performance of this kind of HUB is relatively poor.
Especially lack of advantage in speed.
(2) Modular hub
Modular hubs are generally equipped with a rack with multiple card slots, each slot can hold a communication card, each card acts as an independent hub, and multiple cards communicate Backplanes interconnect and communicate with each other. The modular HUB commonly used now generally has 4 to 14 slots. Each port of a modular hub has a dedicated bandwidth, and the bandwidth is only shared within each network segment. Switching technology is used between network segments to reduce conflicts and improve communication efficiency, so it is also called a port switch modular HUB.
In fact, this kind of HUB has already adopted part of the technology of the switch, and it is no longer a HUB in a simple sense. It is convenient to implement centralized management of users in a larger network, and has been widely used in a larger network. The figure below is a schematic diagram of a modular hub rack and modular plug-in card products, which is a schematic diagram of a modular hub product for industrial control applications.
(3) Stacked hub
A stackable hub can "stack" multiple hubs. When they are connected together, they act like a modular hub. When stacked together, the hub can be managed as a unit device. Generally, when there are multiple HUBs stacked, there is a manageable HUB among them, and other "independent HUBs" in this stackable HUB can be managed by using the manageable HUB. The stackable HUB can realize the expansion of the network very conveniently, and it is the most ideal choice when building a new network.
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