Network analysis support apparatus, the network test equipment, the network analysis method, and a support network Test Method

Collecting a first message portion (101) collected in a first network (50) flows through the message, stored in the first storage unit (103). Collecting the second message portion (102) collected in the second network (60) flows through the message, stored in the second storage unit (104). Associated message portion (105) defines a holding message flows from the gateway device on the first network (50), the mapping table corresponding relationship in messages into the second network (60) from the gateway device and the. Associated message unit (105) referring to the mapping table to associate the first storage portion (103) of the stored messages, and a second storage unit (104) stored message. State analysis unit (106) based on a result of the association, it is determined whether the messages exchanged normally performed between the first network (50) and the second network (60).