Network communication system brittleness research based on isomorphic

Simulation model of network communications system brittleness was proposed in this paper. This paper put forward the concept of network communications system brittleness entropy from the view of whole network system. It is also used to indicate the state of the network system. In order to segregate the detail of the physical network, the brittle risk interface base on isomorphic was introduced. As an example, a real practical network system was tested. Simulation results show that the method offered by this paper was useful. The method presented in this paper is not only be used to analyse the network brittleness before it was built, but also test the network which has been built.