Patent ID: 6967954

Claim:
An ATM (asynchronous switching mode) edge node switching equipment that is connected to plural user terminals in an ATM network, comprising: an IP (Internet protocol) data packet distribution unit, which distributes IP data packets to each of said plural user terminals by utilizing an LP-VPN (Internet protocol-virtual private network) unit; wherein said IP-VPN unit comprises: an inputted IP data packet analyzing section that obtains an input VC (virtual channel) numbers, and also obtains a VPN-ID (virtual private network-identifier) for distinguishing each of said user terminals and a QOS (quality of service) type based on said input VC number and QOS information from a header part of an IP data packet transferred from one of said plural user terminals, said QOS information including a protocol type, a destination service port number, a source address service port number, and a code point; and a routing information retrieving section that retrieves an output VC number of an output VC to which said IP data packet is transferred based on a destination IP address in said IP data packet, said VPN-ID, and said QOS type.