| 摘要 |
PROBLEM TO BE SOLVED: To provide a network monitoring device and the like capable of efficiently monitoring a network.SOLUTION: A network monitoring device (for example, capture device 21) comprises a failure determination unit for performing failure determination for each state of predetermined sizes of one or a plurality of messages, on the basis of information on a request message and response message transmitted in a section between two communication devices (for example, MME device 2 and SGW device 4) configuring a network (for example, LTE network), where the state is, as one example, a state of a combination of predetermined sizes of respective messages in a set of the request message and response message associated with each other. |
