Method and device for load sharing, and single plate

A method of load sharing, comprising: receiving, by a redirect unit incorporated, data to be transmitted (step 301); obtaining, by a control unit management, load current relationships units redirect (step 302); where redirection unit built and management control unit are located on the same plate, and redirection units comprise the unit and another unit incorporated redirection redirection off the plate; and determining whether a relationship of current unit load redirection incorporated units redirection is below a ratio threshold preset load, and if so determine that the redirector incorporated is the unit for redirecting data to be transmitted (step 303); otherwise, determining that the other unit redirect outside the plate is the unit for redirecting data to be transmitted.