Patent ID: 6947423

Claim:
An MPOA (Multi-Protocol Over ATM (Asynchronous Transfer Mode)) server, comprising: means for reception of MPOA Resolution Request packets; means for judgment whether a target of an MPOA Resolution Request packet is on a local subnet; means for judgment whether a physical configuration of a transmission network interface, which is that of an own node, toward the target or a next hop is in conformity with the ATM, and the transmission network interface is set to be logically operable in conformity with the MPOA; and means for transmission of an NHRP (NBMA (Non-Broadcast Multi-Access) Next Hop Resolution Protocol) Resolution Request packet, which is made based on the MPOA Resolution Request packet, and to which the MAC (Media Access Control) address of the transmission network interface is added, when it is judged that the target is not on the local subnet, the physical configuration of the transmission network interface is in conformity with the ATM, and the transmission network interface is set to be logically operable in conformity with the MPOA.