This section discusses how the network configuration system helps solve the problem of address resolution.
If PVCs are used, only InATMARP , is required. The receiving side of an InATMARP packet will infer the IP address from the packet, and the sender will receive a InATMARP response. Thus both sides will be able to complete their ARP tables.
If SVCs are used, the operation is more complex. After the HANDOFF packet has been sent to the RN, an ARPSERVER packet (Table 9) is sent. This packet contains the ATM address of the ATMARP server. Thus the RN will be able to register with the ATMARP server, , by initiating a connection to the ATMARP server. The ATMARP server will respond with an InATMARP request which will update both ARP tables. Next, the ATMARP server will respond to the ATMARP request with a reply if it has an entry for the requested IP address. If there is no such address in its table, it responds with an ATM_NAK. If the reply is successful, the remote node will have the ATM address for a given IP address.