Multi-chassis switch having a modular center stage chassis

One embodiment of the invention relates to a multi-chassis switch having a modular center stage chassis. A system may comprise a first group of switches, each switch including a first group of inputs and outputs, and a first group of controllers, each controller being independent from one another and corresponding to a switch of the first group of switches, to selectively control the switch to connect the switch's inputs with outputs. The first group of switches and controllers may be installed in a chassis. The system may comprise a second group of switches, each switch including a second group of inputs and outputs, and a second group of controllers, each controller corresponding to a switch of the second group of switches, to selectively control the switch to connect the switch's inputs with outputs. The second group of controllers may control and connect, via a group of control links, to the first group of controllers. 本公开的实施例涉及具有模块化的中心级机架的多机架交换机。种系统可以包括：第组交换机，每个交换机包括第组输入和输出；以及第组控制器，每个控制器彼此独立并且对应于第组交换机中的每