Method and apparatus for updating system software for a plurality of data processing units in a communication network
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United States of America Patent
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Apr 16, 1991
Grant Date -
N/A
app pub date -
Aug 15, 1988
filing date -
Aug 15, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In maintaining a communication network of processing units distributed in multiple nodes linked by communication channels, system software in a plurality of data processing units is updated by first installing the updated software in a first node. The updated software is transmitted through the network to other nodes. A trial use of the updated software is initiated in the nodes. If failures of the updated software are detected in a node, that node will be restored to the original software version. If the trial use of the updated software is completed successfully in a node, the updated version will be installed as a preferred operational version in the node. a
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