Share the interface classification function on a switch and their functions

What are the interfaces of a switch? What are the functions of each interface? Let's take a look in this issue.
S port
The meaning of the Serial interface, also known as high-speed asynchronous serial port, is mainly used to connect V.35 cables to the wide area network. In other words, it is used when connecting routers and routers. Bandwidth can be set using commands, usually around 10M or 8M.
E-port
It is the Ethernet interface, also known as the Ethernet interface, which is mainly used to connect Ethernet (local area network). It can also be connected using ordinary twisted pair cables, with a default speed of 10Mbps. This interface has been phased out on new devices. In addition, there is an essential interface on the router called the Console port, which is used to debug the router. Some routers also have AUX interfaces, which are control interfaces; There is also a G port, which is a gigabit Ethernet interface used for connecting Ethernet.
F port
It is a FastEthernet interface, also known as a 100Mbps port. Mainly used for connecting Ethernet (local area network), in other words, it is used to connect switches or computers. It can be connected using ordinary twisted pair cables, with a default speed of 100Mbps. The speed can be limited by commands, but it cannot exceed 100Mbps.
G-port
G port means Gigabit Ethernet, which is a gigabit port. Gigabit only indicates that it is a gigabit port, and whether it is an optical port or an electrical port, the display is the same. If you want to take a detailed look, you can display int.
Gigabit Ethernet can be either an optical port or an electrical port, depending on the device parameters. Ethernet is an Ethernet port, and Gigabit Ethernet is a Gigabit Ethernet port. Both are defined by the IEEE 802.3-2005 standard and can use Ethernet cables or fiber optics.
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