Multicast group routing using unidirectional links
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United States of America Patent
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Jan 30, 2001
Grant Date -
N/A
app pub date -
Jul 31, 1998
filing date -
Jul 31, 1998
priority date (Note) -
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Abstract
The invention provides a method and system for multicast group routing using unidirectional links. A set of uplink routers and a set of downlink routers provide a primary unidirectional distribution path from a set of sources to a set of destinations. A relatively smaller reverse communication channel is provided between the destinations and the sources. When a destination desires to add itself to, or take itself off, a multicast distribution group, one of the downlink routers acts as a proxy for that destination and so informs the relevant source. The selection of the proxy reporter for downlink routers or the querier for uplink routers does not require bi-directional communication between either of them, respectively.
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