Multiplex communications – Channel assignment techniques – Messages addressed to multiple destinations
Reexamination Certificate
2004-12-21
2009-12-01
Mattis, Jason E (Department: 2416)
Multiplex communications
Channel assignment techniques
Messages addressed to multiple destinations
C370S400000, C370S390000
Reexamination Certificate
active
07626995
ABSTRACT:
In one embodiment, the present invention is a method and apparatus for scalable virtual private network multicasting. In one embodiment a service network builds a new data multicast distribution tree for each high-bandwidth multicast data flow (e.g., multicast data flows that require an amount bandwidth meeting or exceeding a predefined threshold). However, if the multicast data flow is a low-bandwidth flow (e.g., if the required amount of bandwidth falls below the predefined threshold), the multicast data flow is routed over an existing multicast distribution tree in order to minimize an amount of state information that must be maintained by service provider core routers in the backbone network.
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AT&T Corp.
Hailu Kibrom T
Mattis Jason E
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