Selection skills of national production reinforced Ethernet switch

The national production reinforced switch is used to connect Ethernet equipment ： First, receive the data frame sent by a device , These frames are then transmitted to the appropriate switch port connected to other Ethernet devices . As it transmits these frames , Learn and master the location of Ethernet devices , And use this information to determine which ports should be used to transmit frames , This helps to reduce network usage . In this issue, the editor of Wuhan Hailing optoelectronics talked about the selection skills of national production reinforced switches .

What kind of national reinforced switches are most suitable for harsh environment applications ？ This is really a disturbing thing , Because many factors need to be considered , For example, working environment , Whether redundancy is required , Managed and unmanaged , Future maintenance and scalability, etc .

The purchase and purchase of reinforced switches made in China

1、 Work environment considerations ： Including temperature range 、EMC Electromagnetic compatibility 、 Protection level 、 Installation mode and power supply, etc . The national ruggedized switches are designed for environments that are not suitable for commercial switches , For example, it has extreme temperature 、 Environment with high vibration and strong electromagnetic noise .

  2、 Choose network management or non Network Management National switch ： If The network is relatively simple , You can select the plug and play non network management national production switch ; For future maintenance convenience , Network management type may be required , Only the national network management switch can achieve the ring topology connection .

3、 It also needs to meet relevant industrial standards ： For example, the National Marine switchboard should meet the standards of ship structure ; In the case of hazardous applications , It shall comply with the corresponding certification standards ; Rail transit, highway and other transportation industries also have their own standards .EMC Electromagnetic compatibility --Electromagnetic Compatibility

    Electromagnetic compatibility （EMC） It refers to the ability of the equipment or system to operate in accordance with the requirements in its electromagnetic environment without generating intolerable electromagnetic interference to any equipment in its environment . therefore ,EMC There are two requirements ： On the one hand, it means that the electromagnetic interference of the equipment to the environment in the normal operation process cannot exceed a certain limit ; On the other hand, it means that the appliance has a certain degree of immunity to electromagnetic interference in the environment , That is, electromagnetic sensitivity .

Network management and non network management

    The task of nationally produced network management switches is to keep all network resources in good condition . The national network management switch products provide terminal control ports （Console）、 be based on Web Page and support Telnet Remote login network and other network management methods .

    The national network management switch also has some advanced features that can improve your network control ability . Like service quality (QoS)、 Virtual LAN (VLAN)、 Port Mirror 、IGMP Snooping、 Redundancy and SNMP Other characteristics , Usually only network managed switches are available , Most of the national managed switches have advanced features .