There are many different types of switches, and different types of switches have different performances. We need to know the types we need before we choose. Switches can be classified in different ways. How do switches be classified? The following decoration home decoration network Xiaobian will bring you a common switch classification method for your reference.
How is the switch classified?
Switch classification mode 1. According to the network composition classification: network switches can be divided into access layer switches, aggregation layer switches, and core layer switches. The access layer and the aggregation layer switch together form a complete small and medium-sized LAN solution.
Switch classification 2. Transmission medium and transmission speed classification: Switches can be divided into Ethernet switches, Fast Ethernet switches, Gigabit Ethernet switches, FDDI switches, ATM switches, and Token Ring switches. These switches are applicable to Environments such as Ethernet, Fast Ethernet, FDDI , ATM, and Token Ring.
Switch classification mode 3. Scale application classification: From the scale application, there are enterprise-level switches, department-level switches, and workgroup switches. Generally speaking, enterprise-class switches are rack-mounted, department-level switches can be rack-mounted or fixed-configuration, while work-group switches are generally fixed-configuration and simple. In terms of the scale of the application, when it is a backbone switch, the switch supporting large enterprise applications with more than 500 information points is an enterprise-class switch, and the switch supporting medium-sized enterprises with 300 information points or less is a department-level switch, and supports 100 information points. The switch is a workgroup level switch.
Switch classification method 4, architecture characteristics classification: According to the characteristics of the architecture, people also divide the LAN switch into three types: rack-mounted, fixed-distribution configuration with expansion slot, and fixed configuration without expansion slot. A rack switch is a slot-type switch that is more scalable and supports different network types, but it is more expensive. A fixed-profile fixed switch is a switch with fixed ports and a small number of expansion slots. This switch can support other types of networks by extending other network type modules based on fixed-port type networks. The price of the switch is centered. A fixed-profile switch without an expansion slot supports only one type of network (typically Ethernet) and can be used in local area networks in small businesses or office environments at a lower price and most widely used.
Switch classification mode 5. According to the seven-layer network model classification: According to the seven-layer network model of OSI , the switch can be further divided into a second layer switch, a third layer switch, a fourth layer switch, etc., up to the seventh layer switch. Layer 2 switches based on MAC address work are most common and are used in the network access layer and aggregation layer. Layer 3 switches based on IP addresses and protocols are commonly used in the core layer of the network, and are also used in small amounts in the aggregation layer. Some Layer 3 switches also have a Layer 4 switching function, which can perform target port judgment based on the protocol port information of the data frame. The switches above the fourth layer are called content switches, and are mainly used in Internet data centers.
Switch classification method 6. According to whether the switch can be managed: The switch can be divided into a manageable switch and an unmanaged switch. The difference is that it supports SNMP , RMON and other network management protocols. Manageable switches facilitate network monitoring and traffic analysis, but at a relatively high cost. Large and medium-sized networks should choose a manageable switch at the aggregation layer. Depending on the application needs at the access layer, the core layer switches are all manageable switches.
Switch classification method 7. Wide range of common classification methods: According to the most widely used general classification method, LAN switches can be classified into three types: desktop switches, workgroup switches, and campus network switches. Desktop switches are the most widely used, especially in general offices, small computer rooms, and business departments with relatively concentrated business acceptance, multimedia production centers, and website management centers. Workgroup switches are often used as expansion devices. When desktop switches fail to meet the needs, most workgroup switches are directly considered. Although the workgroup switch has only a small number of ports, it supports more MAC addresses and has a good expansion capability. The port transmission speed is basically 100M . Campus network switches are relatively rare, and are only used in large networks. They are generally used as backbone switches of the network, and have fast data exchange capability and full-duplex capability. They provide intelligent features such as fault tolerance, and also support expansion options and Layer 3. Multiple functions such as virtual local area network (VLAN) in the exchange .
Switch classification mode 8. Classification according to switching technology: According to different switching technologies, some people divide switches into port switches, frame switches, and cell switches. The port switch has a small forwarding delay and operates close to the performance of a single LAN, far exceeding the forwarding performance between ordinary bridged Internet. Frame switching is currently the most widely used LAN switching technology. It provides a parallel transmission mechanism by micro-segmenting the traditional transmission medium to reduce the collision domain and obtain high bandwidth.
Switch classification mode 9. Divided from the perspective of application : From the application point of view, the switch can be divided into a telephone switch ( PBX ) and a data switch ( Switch ). Of course, the current very fashionable voice over the data transmission VoIP is also known as the "soft switch."
The above is how the switch is introduced by Xiaobian. All the contents of the common switch classification method, I believe that everyone has a basic understanding of how to classify the switch after reading this article, if you want to know more about decoration consultation, please click to enter the decoration knowledge channel .
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