Abstract: According to the complexity phenomenon of equipment support network being attacked by the enemy, the similarity between network cascading process and virus propagation process is compared and analyzed. On the basis of the existing load capacity cascading failure model, the process of virus immune propagation is integrated, four different states of support nodes are defined, and the cascade transmission model of equipment support network is constructed, which can better reproduce the real situation of our support organization being attacked by the enemy and public opinion. The simulation and comparison shows that when the defense resources are limited and the time is urgent, the active immune strategy is a priority, and can achieve better effect of resisting cascading failure with the implementation of target immune strategy, and thus the equipment support network has strong robustness and good recovery ability.

Key words: equipment support network, cascading failure, node immunity, virus propagation