Technique for maintaining prioritization of data transferred among heterogeneous nodes of a computer network
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Apr 10, 1997
filing date -
Apr 10, 1997
priority date (Note) -
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Abstract
A technique maintains priority of packets transmitted over a heterogeneous network by a hybrid node coupled to the network. The hybrid node assigns each packet a transmission priority (TP) level as it traverses protocol layers of a communications stack of the node. An application programming interface extension provides a tagging mechanism for conveying the TP levels from higher protocol layers of the stack to lower layers. The TP levels are then converted to information that is 'tagged' to the packets and these tagged packets are then apportioned among a plurality of communication sessions based on the TP level assigned to each packet. The tagged packets and their associated sessions preserve the priority and order of the packets across the heterogeneous network.
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