The switch can transmit data between multiple port pairs at the same time. Each port can be regarded as an independent physical network segment (note: non-IP network segment), and the network equipment connected to it enjoys the full bandwidth independently, without competing with other equipment for use. So, do you know the port structure and port type of the switch? Next, let's follow the editor of Feichang Technology to learn more about it!
1. The port structure of the
switch If divided according to the port structure of the switch, the switch can be roughly divided into two different structures: fixed port switch and modular switch. In fact, there is another way to give consideration to both, which is to provide a certain expansion slot or module on the basis of the basic fixed port.
1. Fixed port switch
The fixed port, as the name implies, is that the ports it carries are fixed. If it has 8 ports, there can only be 8 ports, and you cannot add them. With 16 ports, there can only be 16 ports, which cannot be expanded. At present, such fixed-port switches are relatively common, and the number of ports is not clearly specified. The general port standards are 8-port, 16-port, and 24-port. The number of non-standard ports mainly includes: 4 ports, 5 ports, 10 ports, 12 ports, 20 ports, 22 ports and 32 ports.
Although fixed port switches are relatively cheaper, they can only provide limited ports and fixed types of interfaces. Therefore, both in terms of the number of connectable users and the available transmission media, they have a certain Limitations, but this kind of switch is widely used in workgroups, and is generally suitable for small network and desktop switching environments.
Fixed port switches are divided into desktop switches and rack switches due to their installation structure. Like hubs, rack-mounted switches are easier to manage and are more suitable for larger-scale networks. Its structure must conform to the 19-inch international standard. It is used for centralized installation with other switching equipment or routers, servers, etc. In a cabinet. However, desktop switches can only provide a small number of ports and cannot be installed in a cabinet, so they are usually only used for small networks.
2. Modular switch
Although modular switches are much more expensive in terms of price, they have greater flexibility and expandability. Users can choose modules of different numbers, different speeds, and different interface types to meet the ever-changing network needs. Moreover, most modular switches have strong fault tolerance, support redundant backup of switching modules, and often have hot-swappable dual power supplies to ensure the power supply of the switch. When choosing a switch, a modular or fixed method should be selected according to needs and expenses. Generally speaking, enterprise-level switches should consider their scalability, compatibility, and troubleshooting. Therefore, modular switches should be selected; while backbone switches and workgroup switches have a single task, simple and clear fixed switches can be used. .
2. The switch port type The
switch port type refers to whether the port on the switch is Ethernet, token ring, FDDI or ATM. Generally speaking, fixed port switches have only a single type of port, which is suitable for small and medium-sized enterprises or individual users. Modular switches are more abundant in port types because they can have modules of different media types to choose from. This type of switch is suitable for users at the departmental level and above.
Fast Ethernet switch port types generally include 10Base-T, 100Base-TX, and 100Base-FX. 10Base-T and 100Base-TX are generally provided by 10M/100M adaptive ports, which are usually RJ-45 ports. As shown in the figure below, the left figure shows the 10Base-T network RJ-45 port, and the right figure shows the 10/100Base-TX network RJ-45 port. In fact, these two RJ-45 ports are exactly the same only in terms of the port itself, but the corresponding network circuit structure in the port is different, so you can't connect it casually.
High-performance switches like FDDI also provide 100BASE-FX and Gigabit FL optical fiber interfaces. This interface is what we usually call the SC port, which is used to connect to the optical fiber as shown in the figure.
Well, the above is the detailed introduction of the port structure and port type of the switch by Feichang Technology, I hope it can be helpful to everyone! Feichang Technology has been specialized in the R&D, production and sales of industrial communication equipment such as optical transceivers, industrial switches, optical fiber transceivers, and protocol converters for 20 years. Welcome to come to understand and exchange.