Switch interface type

The switch has a variety of interface types, such as 10GE, GE, FE, OC-48/STM-16 POS, OC-16/STM-4 POS, OC-3/STM-1 POS, and other interfaces. Realize high port density and wire-speed routing and switching.
The S port is the meaning of the serial interface. It is also called the high-speed asynchronous serial port. It is mainly used to connect the V.35 cable of the WAN. It is used when the router and the router are connected. You can set the bandwidth with the command, which is generally around 10M and 8M. 
The F port is a FastEthernet interface, called a Fast Ethernet port. It is mainly connected to an Ethernet (LAN). It can be connected to a switch or a computer. It can be connected with a normal twisted pair. The default rate is 100Mbps. You can use the command speed limit, but it is impossible to exceed 100Mbps.
The E port is an Ethernet interface, called an Ethernet interface. It is mainly connected to an Ethernet (LAN). It can also be connected by an ordinary twisted pair cable. The default rate is 10 Mbps. This interface has been eliminated on new devices.
The Console port is an indispensable interface on the router: the control port. This interface is used to debug the router. In addition, some routers also have an AUX interface, which is also a control interface;
The G port is a GigabitEthernet interface, called a Gigabit Ethernet interface, which is used to connect to Ethernet. The rate is 1000 Mbps = 1 Gbps.

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