A management apparatus that manages a wireless communication network formed by a plurality of wireless communication devices (D1, D2) capable of TDMA wireless communication, the wireless communication network enabling multi-hop connection, comprising: an extended link management unit configured to manage extended links, each of which defining channels and timeslots used in the TDMA wireless communication, specifying a communication direction and containing respective property information characterizing the wireless communications enabling multi-hop connection performed by the wireless communication devices (D1, D2) using the extended link, wherein the property information contains at least one of: information indicating a communication protocol, a frequency channel, an antenna, a modulation, a cryptographic algorithm, and a cryptographic key, which are used in the wireless communication, information indicating the bandwidth of the wireless communication, and information indicating another wireless network to be connected to the wireless network, characterized in that the extended link management unit comprises: a first database that stores information including an occupy timeslot needed for the wireless communication and a communication protocol switching margin and communication protocols supported by each of the wireless communication devices (D1, D2) needed when setting property information for the wireless communication devices (D1, D2) forming the wireless network; and a second database that stores property information presently set for the wireless communication devices (D1, D2) and contains information indicating at least the channels, the timeslots, the communication directions, device IDs of the wireless communication devices (D1, D2), device IDs of communication peers of the wireless communication devices (D1, D2), and communication protocols, and the extended link management unit is configured to refer to the first and second databases (DB1, DB2) and set new property information for the wireless communication devices (D1, D2) so that communication protocols match with the communication peers. an extended link management unit configured to manage extended links, each of which defining channels and timeslots used in the TDMA wireless communication, specifying a communication direction and containing respective property information characterizing the wireless communications enabling multi-hop connection performed by the wireless communication devices (D1, D2) using the extended link, wherein the property information contains at least one of: information indicating a communication protocol, a frequency channel, an antenna, a modulation, a cryptographic algorithm, and a cryptographic key, which are used in the wireless communication, information indicating the bandwidth of the wireless communication, and information indicating another wireless network to be connected to the wireless network, characterized in that the extended link management unit comprises: a first database that stores information including an occupy timeslot needed for the wireless communication and a communication protocol switching margin and communication protocols supported by each of the wireless communication devices (D1, D2) needed when setting property information for the wireless communication devices (D1, D2) forming the wireless network; and a second database that stores property information presently set for the wireless communication devices (D1, D2) and contains information indicating at least the channels, the timeslots, the communication directions, device IDs of the wireless communication devices (D1, D2), device IDs of communication peers of the wireless communication devices (D1, D2), and communication protocols, and the extended link management unit is configured to refer to the first and second databases (DB1, DB2) and set new property information for the wireless communication devices (D1, D2) so that communication protocols match with the communication peers. a first database that stores information including an occupy timeslot needed for the wireless communication and a communication protocol switching margin and communication protocols supported by each of the wireless communication devices (D1, D2) needed when setting property information for the wireless communication devices (D1, D2) forming the wireless network; and a second database that stores property information presently set for the wireless communication devices (D1, D2) and contains information indicating at least the channels, the timeslots, the communication directions, device IDs of the wireless communication devices (D1, D2), device IDs of communication peers of the wireless communication devices (D1, D2), and communication protocols, and the extended link management unit is configured to refer to the first and second databases (DB1, DB2) and set new property information for the wireless communication devices (D1, D2) so that communication protocols match with the communication peers.