ACL issuing method and device

The invention provides an ACL issuing method and device, and the method comprises the steps: a main control board card of a machine frame type device obtains an upper limit value for a target type message, divides the upper limit value into N threshold values, and distributes the N threshold values to N switching chips, so as to generate and issue one or two ACLs to each switching chip, so that after any switching chip reaches the threshold value through the ACLs, the target type message received by the switching chip can be redirected to enable other switching chips not reaching the threshold to accept the message, that is, after the message enters the equipment, the message is discarded only after all the switching chips in the switching chip sequence reach the respective threshold, so the plurality of switching chips share the upper limit value, and a better speed limiting effect is achieved. 本说明书提供一种ACL下发方法及装置，所述方法包括：机框式设备的主控板卡获取针对目标类型报文的上限值，并将上限值拆分为N个阈值分别分配各N个交换芯片，以生成并向每个交换芯片下发一个或两个ACL，这些ACL使得任一交换芯片达到阈值后