The main technical points network switch |
| Author： Date：2016/8/31 15:38:55 |
Network switches is an expansion of network equipment, can offer more for child network connection, so that more computer connection. With the development of the telecommunication industry and the advancement of national economy informatization, network switch market is steadily rising. It has high cost performance, highly flexible, relatively simple, easy to implement, etc. Ethernet switch is a kind of network equipment for the electrical signal forward.
It can provide access switches of any two nodes of electrical signal pathway. Switch (Switch) is also called switching hub, is a kind of work in the OSI layer 2 (data link layer, see "wan" definition), based on the MAC (media access control address of network card) to identify, forwarding packets can finish sealing function of network equipment. It through the information to regenerate, and forwarded to the specified port after internal processing, automatic addressing ability and exchange. Switches don't know the IP address, but it can "learn" MAC address, and keep it in the internal address table, through between the originator of a data frame and target receivers to establish a temporary switching path, make the data frame directly by the source address to reach the destination address. All the ports on the switch has the prerogative of channel bandwidth, to ensure quick and efficient data transmission on each port. Due to the switch according to the destination address of the packet, each packet independently from the source port to send to the port of destination, and will not send all ports, to avoid the conflict with other port, therefore, switches can transmit the packet and of no effect, and to prevent transmission conflict, improve the actual throughput of the network. |