Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-09-04
2007-09-04
Kizou, Hassan (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395300, C370S395530
Reexamination Certificate
active
10413177
ABSTRACT:
The present invention presents a method for setting up a QoS (Quality-of-Service) supported bi-directional tunnel and distributing L2VPN (Layer-2 Virtual Private Network) membership information for an L2VPN using an extended LDP (Label Distribution Protocol). In a network providing MPLS based L2VPN service, which includes a plurality of VPN provider edges (PEs), a plurality of VPN customer edges (CEs) connected to the PEs and a VPN DNS (Domain Name Service) server for managing PE information associated with a plurality of VPNs, a PE registers information associated with the VPN DNS server to provide the L2VPN service, and uses the extended LDP for QoS supported bi-directional tunnel setup and the extended LDP for QoS supported L2VPN membership information distribution. A VPN CE needs only a simple Layer-2 connection providing function for the L2VPN service.
REFERENCES:
patent: 2003/0142674 (2003-07-01), Casey
patent: 2003/0174706 (2003-09-01), Shankar et al.
patent: 2003/0177221 (2003-09-01), Ould-Brahim et al.
patent: 1020020019164 (2002-03-01), None
patent: WO 03/005648 (2003-01-01), None
‘Transport mechanism of the Ethernet frame over theMPLS network’, M. Son, et al., Electronics and Telecommunications Research Institute, 5 pages, 2002.
Kim Mi Hui
Lee Jong Hyup
Lee Yoo Kyoung
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Kizou Hassan
Patel Jay P.
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