How to create network redundancy for network managed national production reinforced switch

    Compared with non network managed national production reinforced switch , One of the advantages of using Wuhan Hailing photoelectric network management type national production reinforced switch is its redundancy function . This allows you to use Ethernet with additional connections , therefore If a path between two points on the network fails , Then you can use another path to deliver the message . If a link or national production reinforced switch fails , Another link or national production reinforced switch can take over , To prevent unnecessary downtime .

　　 that , Why not physically connect the unmanaged national production reinforced switches in the network in different loop configurations , There are always at least two paths between each national production reinforced switch ？

　　 Because this connection will create a broadcast loop , Quickly paralyze the network . In an unmanaged Ethernet network , There can only be one path between any two ports on the network . If there are multiple paths from a non network managed national production reinforced switch to another national production reinforced switch , Then the broadcast message sent by the network （ In some cases, there are other messages ） Will be forwarded , And complete the loop when returning to the second path . As the non network managed national production reinforced switch forwards all broadcasts , And don't track the messages they send , Therefore, the returned message will be sent again and again in the loop . It's obviously not a good thing for a message to travel back and forth at high speed in a loop , therefore The non network managed national production reinforced switch is not allowed to circulate .

　　 The limitations of only one link are more clear . If the only path fails for any reason , For example, the cable is disconnected or one of the national reinforced switches has a power failure , There is no transmission path , There is no network communication through . So we need a way to add alternate paths without creating a loop . Use things like RSTP（ Loop prevention protocol ） Redundant protocols like , So that the network managed national production reinforced switches can communicate with each other to discover and prevent loops .

　　RSTP: Rapid Spanning Tree Protocol Fast spanning tree protocol is the preferred method to purposefully create a ring that allows multiple redundant paths on the network . This function allows the network managed national production reinforced switch to intelligently determine a path when the network appears , And allocate a spare path when some parts of the original path fail . It determines the way the original path is and the time to change to an alternate path is much faster than when using the original spanning tree protocol . Only if your traditional network needs this protocol , Enable old STP It's really useful .RSTP Features are usually enabled by default .

　　 In the actual networking , You can see the advantages of network management type national production reinforced switch in realizing network transmission . When a converged national production reinforced switch is connected to 3 A specified tool switch , Each designated network management type national production reinforced switch is interconnected . If this is a non network managed national production reinforced switch , Creating such a redundant network will directly lead to the paralysis of non managed networks . But use RSTP Redundancy protocol , The network managed national production reinforced switch will temporarily block the backup path , In this way, the loop will not interfere with the network .

　　 When the active path between the converged national production reinforced switch and the network managed national production reinforced switch is disconnected , Interconnected backup paths will be activated , In this way, you will not lose any national production reinforced switches from the network . In unmanaged networks , Path failure will remove the national production reinforced switch from the network , Thus, all terminal devices on the national reinforced switch cannot communicate .

    Okay , The above content is the detailed introduction of Hailing optoelectronics on how to create network redundancy for network managed national production reinforced switches , I hope it can help you ！