Methods, aggregation devices, and computer program products for distinguishing between sub-networks coupled to aggregation device ports by using an independent sub-network identifier domain space for each port
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United States of America Patent
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Mar 22, 2011
Grant Date -
N/A
app pub date -
Feb 10, 2003
filing date -
Feb 8, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An aggregation device that connects a plurality of internal sub-networks processes a packet that is destined for one of the plurality of sub-networks. The aggregation device receives the packet and determines an internal sub-network identification value based on the combination of an external sub-network identification value that is in the packet, and a port of the aggregation device to which the one of the plurality of internal sub-networks is connected. The aggregation device may also determine an external sub-network identification value based on an internal sub-network identification value that is associated with a port of the aggregation device to which one of the plurality of internal sub-networks is connected. The external sub-network identification value is stored in the packet and the packet is transmitted on the port of the aggregation device to which the one of the plurality of internal sub-networks is connected.
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