Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2004-07-06
2008-10-21
Nguyen, Duc (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C709S225000
Reexamination Certificate
active
07440438
ABSTRACT:
Refresh and filtering mechanisms for LDP based VPLS and L2VPN solutions are disclosed. A method for improving information communication in a network is achieved by these refresh and filtering mechanisms. The network includes provider edge devices which can communicate with each other. The provider edge devices run a communications protocol. The method includes a step of using the communications protocol in providing a first of the provider edge devices with a list of layer-2 virtual private network instances to which a second of the provider edge devices belongs. Another step in the method is filtering layer-2 virtual private network information to be communicated to the second provider edge device from the first provider edge device by reference to the layer-2 virtual private network instances to which the second provider edge device belongs.
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Ashwood-Smith Peter
Fedyk Donald
Ould-Brahim Hamid
Nguyen Duc
Nortel Networks Limited
Ridout & Maybee LLP
Thier Michael T
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