ATM edge node switching equipment utilized IP-VPN function

Details ATM edge node switching equipment utilized IP-VPN function ATM edge node switching equipment utilized IP-VPN function

2005-11-22

2005-11-22

Duong, Frank (Department: 2666)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395100

Reexamination Certificate

active

06967954

ABSTRACT:
ATM edge node switching equipment utilizes an IIP-VPN function, which can achieve a low cost VPN compared with an L2-VPN in which a user terminal is connected to the ATM edge node switching equipment by a mesh connection. This connection is provided, by connecting the user terminal and the ATM edge node switching equipment with one leased line. The ATM edge node switching equipment has an IP data packet distribution unit, which distributes each of IP data packets to each of the plural user terminals, by utilizing a IP-VPN unit using a destination IP address of each of the plural user terminals. The IP-VPN unit has an inputted IP data packet analyzing section that obtains an input VC (virtual channel) number and also obtains a VPN-ID (virtual private network-identifier) for distinguishing each of the user terminals and a QOS (quality of service) type set by QOS information from a header part of the IP data packet transferred from one of the user terminals. The IP-VPN device also has a routing information retrieving section that retrieves a routing of a VC for a destination address by using the destination IP address, the VPN-ID, and the QOS type, and sets the routing of the VC for the destination address.

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Article—The Institute of Electronics, Information and Communication Engineers, Mar. 19, 1999, vol. 98, pp. 75-80.

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