System, device, and method for reducing multicast forwarding states in a multicast communication system
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United States of America Patent
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Jul 22, 2003
Grant Date -
N/A
app pub date -
Nov 29, 1999
filing date -
Nov 29, 1999
priority date (Note) -
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Abstract
A system, device, and method for reducing multicast forwarding states in a multicast communication system maintains forwarding states in such a way that the non-default forwarding states have non-overlapping source address ranges. Each forwarding state is associated with a source address range encompassing one or more source addresses. When a non-default forwarding state is installed, the source address range for the forwarding state is selected so that the source address range does not overlap with the source address ranges of any other non-default forwarding states. The source address range for a particular forwarding state may be adjusted as new routes are learned or existing routes are changed or aged.
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