The switch on the core of the network backbone is called the core switch. The backbone of the network is the core layer, the core layer of the main purpose is to forward communications through high-speed, to provide an optimized and reliable backbone transmission structure, so the core layer switches should have higher reliability, performance and throughput.

The core switch is for the network architecture. If it is a small computer composed of a small area network, a small 8-bit switch can be called the core switch. The computer will reach a certain number will use the core switch, the basic size of the following 50 networks can have a router. In the network industry, the core switch is a network management function, the powerful throughput of the 2 or 3 switches, a network of more than 100 computers, if you want to stabilize and high-speed operation, the core switch is essential.