| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication terminal that can set a standby communication path even if a communication path in an available state is not set in advance.SOLUTION: A communication terminal 10 of the present invention comprises: an abnormality detection unit 11 that detects abnormality on a communication line; a route setting information holding unit 12 that holds route setting information including information on a standby communication route set between the communication terminal and another communication terminal that cannot connect with a communication network when abnormality is detected, and communication terminal information determining that each communication terminal operates as a DHCP server or not; and a communication unit 13 that, when abnormality is detected, allocates an IP address to another communication terminal on a standby communication route if the communication terminal is determined to operate as a DHCP server, and requests another communication terminal operating as a DHCP server to allocate an IP address if the communication terminal is determined to operate as a DHCP client.SELECTED DRAWING: Figure 1 |
