Packet routing via payload inspection for alert services
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United States of America Patent
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N/A
Issued Date -
Apr 29, 2004
app pub date -
Jul 8, 2003
filing date -
Jul 8, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Packet routing via payload inspection at routers in a core of a distributed network for use in providing alert services. Packets include subjects and attributes in addition to routing information. The subjects correspond with particular types of content for subscriptions, and the attributes encapsulate the data or content, which can include video clips from cameras at particular locations. The routers store filters corresponding with subscriptions to content. Upon receiving a packet, a router inspects the payload section of the packet containing the attributes in order to retrieve the attributes and apply them to the filters for the subscriptions to content from the cameras. If an attribute satisfies a filter, the packet is routed to the next link. If the attributes do not satisfy the filters, the router discards the packet. These routing decisions are distributed among routers in the network core.
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