The invention discloses a port control method and
system for a dual-plane switch and the dual-plane switch, and the method comprises the steps: recognizing a
control mode of a port in the dual-plane switch as an
automatic control mode according to a register value read in a register, and when the port receives a service message, starting the
automatic control mode; the method comprises the following steps: firstly, connecting a port to any plane based on a switching cross unit, judging whether the port belongs to the plane or not by the plane according to a service message, deciding to keep the connection between the port and the plane according to port attribution information sent by the plane, or switching the port attribution to another plane based on the switching cross unit. According to the invention,
automatic control of the port of the dual-plane switch is realized, and the dual-plane attribution of the port can be flexibly adjusted by using the switching cross unit according to the service message, so that the port
utilization rate of the dual-plane switch is effectively improved.