Stacking is usually used in order to expand the bandwidth, usually stacked with a special card is inserted in the back of the switch stack with a special cable to connect a few switches, after stacking these switches is equivalent to a switch stack is to make use of the switch backplane superposition multiple workgroup switch stack to form a working group in order to provide high-density switch port, the switch stack as a switch like the preparation of an IP address. Cascaded through a port connected to a switch with other switches while stacking is connected through the backplane of the switch, which is a connection is established at the chip level, such as the replacement of two stacked 24 **** The effect is like a switch 48 **** Nanjing site development zczxweb.cn