Method for discovering boundary object in local subnetwork

A method for the local-subnet finding the aiming boundary object in the correlative subnet, the method includes: a. the local-subnet get the mark information of the correlative subnet; b. the local-subnet demand the external relation of all the local-subnet boundary objects, estimate the external relation point at the mark parameter of the external boundary objects whether or not matching with the mark information of the correlative subnet, perform the step C if it is; c. determinant the external boundary object is the aiming boundary object of the local-subnet in the correlative subnet. Using the method of the invention to realize the local-subnet find automatically the aiming boundary object that has external relation with the self-boundary object in the correlative subnet, improve the automatic efficiency of the communication managing system, reduce the human workload and fund.