Summarize the Interface Types of various vswitches

The AUI interface is a "D" Type 15-pin interface, which was previously used in a ring or bus network, using the red, green, blue, and horizontal and vertical scanning frequencies to separate the interfaces of the input display, the signal interference between them is less, and we hope to bring you some help.

As the main connection device of LAN, Ethernet switches have become one of the fastest network devices widely used in applications. At the same time, with this rapid development, the functions of switches are constantly enhanced, the upgrade of the switch port and the continuous addition of the connection ports of various special devices to the switch.

This also makes the vswitch interface types very rich. To give you a clear understanding of these interfaces, We have specially compiled an article on the vswitch interface based on the information: this interface is our most common network device interface, commonly known as "crystal head", terminology for RJ-45 connector, belongs to the twisted pair Ethernet interface type. The RJ-45 plug can only be inserted along a fixed direction and is equipped with a plastic shrapnel with a RJ-45 slot stuck to prevent shedding.
　
This interface can be used in 10Base-T Ethernet, 100Base-TX Ethernet, and 1000Base-TX Ethernet. transmission media are all twisted pair wires. However, different bandwidth requirements apply to different media, especially for 1000Base-TX Gigabit Ethernet connections, at least five cat-5e lines should be used, and six cat-5e lines should be used to ensure stability and high speed.

The SC optical fiber interface has been applied in the 100Base-TX Ethernet era. Therefore, 100Base-FXF is the abbreviation of the fiber word fiber, therefore, it is not widely used. Now the industry is vigorously promoting Gigabit Networks, while SC Fiber interfaces are gaining greater attention.
　
Many types of fiber interface, SC Fiber Interface is mainly used for local network switching environment, in some high performance vswitches and routers provide this interface, it looks very similar to the RJ-45 interface, but SC interface appears more flat, its obvious difference is inside the touch, if it is 8 Fine copper touch, it is RJ-45 interface, if it is a copper column is SC Fiber Interface.

FDDI is the highest transmission rate among mature LAN technologies. It has the characteristics of the timing token protocol and supports multiple topology structures. The transmission media is optical fiber. Optical Fiber Distributed Data Interface (FDDI) is a set of protocols developed by the American Organization for Standardization (ANSI) to send digital signals over optical cables. FDDI uses a double-ring token, and the transmission rate can reach Mbps.
　
CCDI is a variant of FDDI. It uses a twisted pair copper cable as the transmission medium, and the data transmission rate is usually Mbps. FDDI-2 is an extended protocol for FDDI, supporting voice, video and data transmission, is another variant of FDDI, known as FDDI full duplex technology FFDT), it uses the same network structure as FDDI, however, the transmission rate can reach 200 Mbps.
　
Because optical fiber is used as the transmission media with many advantages, such as large capacity, long transmission distance, and strong anti-interference ability, it is often used in the backbone network of man, campus environment, and multi-building network distribution environment, therefore, FDDI interfaces are common in backbone network switches. Now, with the popularization of GE, some high-end gigabit switches are also using this interface.

• Summary of various vswitch Port Security (configuring instances)
• Overview of Data Interface Types of various vswitches
• Describes the categories of vswitches.
• How to identify the data interface types of various vswitches
• Classification of various vswitches and their differences

A "Console" port is generally deployed on various vswitches that can manage networks. It is used to configure and manage various vswitches. Connecting to and configuring a vswitch through the Console port is required to configure and manage the vswitch.

Because other configurations can be implemented only by IP address, domain name, or device name, the newly purchased switch obviously cannot have these parameters, therefore, the Console port is the most common and basic switch management and Configuration Port.
　
The Console ports of different types of vswitches are located in different locations, some on the front panel, and some on the back panel. Generally, most modular switches are located on the front panel, while most fixed configuration switches are located on the rear panel. The port is marked with "CONSOLE" on the top or side of the port.

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A variety of switches using DB-9 or DB-25 serial interface, or using RJ-45 interface, need to be connected to the configuration side through a dedicated Console line of computer serial port. The Console line corresponds to the different Console ports of the vswitch. There are also two types of Console lines: one is a serial line, that is, both ends are serial interfaces and both ends are master ports ).

The two ends can be inserted into the computer's serial port and the Console port of a variety of switches; the other is the two ends are RJ-45 joint RJ-45 to RJ-45) flat line. Because both ends of flat line are RJ-45 interface, can not be directly connected with the computer serial port.

Therefore, you must also use a RJ-45 to DB-9 or RJ-45 to DB-25) adaptation in addition to different positions, the Console port type is also different, the vast majority of switches use RJ-45 port, but there are also a few using DB-9 serial port or DB-25 serial port.