| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem of a conventional communication apparatus that cannot make communication with a communication object apparatus when identification information of the communication object apparatus in a network is dynamically changed. <P>SOLUTION: The communication apparatus 100 stores an IP address and a MAC address of the communication object apparatus 50 in cross-reference with each other. When the communication apparatus 100 makes communication with the communication object apparatus 50, first the communication apparatus 100 utilizes the IP address having been stored in the communication apparatus 100 to connect with the communication object apparatus 50. Then the communication apparatus 100 compares a MAC address of the connected communication object apparatus 50 with the MAC address having been stored in the communication apparatus 100 and decides whether or not the MAC addresses are coincident. When they are coincident, the communication apparatus 100 transmits data to the communication object apparatus 50. Further, when they are not coincident, the communication apparatus 100 acquires a new IP address of the communication object apparatus 50 to try again to make communication. Thus, even when the IP address is dynamically assigned to the communication object apparatus 50, the communication apparatus 100 can make communication with the communication object apparatus 50. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
