Switch is a used for signal transmitted network equipment. It can be for the two random access switches provide exclusive network nodes signal pathways. The most common switches is Ethernet switches. Other common speech and telephone switches, optical switch etc.
Switching is according to the need of both ends to transfer information communication, use manual or automatic equipment complete method to the information transmitted to comply with the requirements of the corresponding technical routing collectively. The generalized switches (switch) it is a kind of complete information exchange communication system function of equipment. In computer networks [1] systems, exchange concept of improved sharing work mode. We've been introduced to the HUB on A Shared equipment is, on itself cannot identify the destination address, when the same in LAN A host to B host data transmission, packet in on the Internet for architecture is broadcast mode, by every one terminal through validation data baotou address information to determine whether to receive. That is to say, in this way of working under the same time on the network can only transmit a set of data frame of communications, if a collision still have to try again. This way is sharing network bandwidth.
