Patent ID: 6510159
Filing Date: 2003-01-21
Classification: H04L

Abstract:
A router that operates in an ATM-LAN environment to implement classical IP and ARP over ATM, and having virtual interfaces,the router including an address table in which a record is created for a message at the time an initial packet in a message is transmitted, the record being comprised of fields for a destination address in the network layer, a network layer address of a next hop on a packet relay route and additional packet transmission information, the additional packet transmission information representing a header of a data link layer and a transmission destination interface when a packet is to be transmitted to a LAN interface, and call information on an ATM side when the packet is to be transmitted to an ATM interface, the router being operative to transmit a packet directly to a physical interface using information stored in the address table without executing a normal routing process for packets subsequent to the initial packet.