This invention relates to a central processor load protection method in internal protocol network communication in which in a three layer exchange, ordinary cc message is finished by hardware cc engine and messages that can't be de dealt with are handed over to the central processor and processed by software. Under some circumstances large quantity of message can't be processed by hardware cc engine appear to result in overload for the central processor and influence the system ordinary operation. This method uses the dynamicaly generated discarded routes to effectively suppress these kinds of message software to increase the safety and usability of the system which can be used in three-layer exchangers, high routes, IP cc equipments applying hardware cc technology. |