Sub-network route optimization over a shared access transport facility
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United States of America Patent
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Aug 24, 1999
Grant Date -
N/A
app pub date -
Oct 15, 1998
filing date -
Oct 15, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
Multiple virtual routing networks having the same identifier are defined on a shared access transport facility network. Virtual connections are defined from some or all of the network nodes to at least one of the virtual routing networks. A virtual connection contains a medium address for the node to which it is connected. When a route is calculated between a source node and a destination node, the identical identifier representing different virtual routing networks may appear in the calculated route. If it does, all portions of the route after the first occurrence up to and including the last occurrence of the identifier in the calculated route is deleted to achieve the optimal route. A destination node address is obtained from storage that is associated with the virtual connection to the destination node and information can then be directly routed to the destination node address via the calculated route in an efficient manner.
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