The difference between the folding switch and hub |
| Author： Date：2017/2/8 13:56:30 |
1. From the point of the OSI architecture, hubs, belong to the first layer of the physical equipment belong to the second floor of the OSI data link layer and switch equipment. That is a hub is only for data transmission have the effect of synchronization, amplification and plastic, short for data transmission in the frame = fragments cannot effectively deal with, can't guarantee the completeness and correctness of data transmission; And switch not only can make it to the data transmission synchronization, amplification and plastic, and can filter the short frame, debris, etc.
2. From the way of working, a hub is a kind of broadcasting mode, meaning that the hub port work, all the other ports are able to hear the information, easy to produce the broadcast storm, when the network is larger network performance will be badly affected. And switches will be able to avoid this kind of phenomenon, when the switch work, only request mutual response between the port and destination port without affecting the other ports, so switch to separate collision domains and effectively inhibit the generation of broadcast storm. 3. From the point of bandwidth, hubs, regardless of how many ports are all ports are sharing a bandwidth, at the same time there can only be two ports transmit data, can only wait for other port, a hub can only work at the same time In half duplex mode; For switches, each port has an exclusive bandwidth, when two ports work, does not affect the other port to the switch can not only work at the same time In half duplex mode and can work in full duplex mode. |