Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2008-09-30
2011-10-25
Kizou, Hassan (Department: 2472)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395500
Reexamination Certificate
active
08045570
ABSTRACT:
A virtual private network is provided across a Provider Link State Bridging (PLSB) network between a first node connected to a private LAN and a second node connected to a roaming device. The roaming device is authenticated. A successful authentication results in a Service Identifier for the VPN being sent to the second node. Connectivity between members of the VPN service instance is maintained as part of the PLSB Link State process for forwarding table maintenance, rather than by any form of explicit signalling. A single Customer Virtual Bridge/Virtual Switch Instance can be located at the first node to provide point-to-point connectivity to each roaming device. A virtual Residential Gateway function can be combined with the Customer Virtual Bridge/Virtual Switch Instance.
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Allan David
Casey Liam
Barnes & Thornburg LLP
Kizou Hassan
Maglo Emmanuel
Nortel Networks Limited
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