Network restoration
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United States of America Patent
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Jan 3, 2012
Grant Date -
Jan 20, 2005
app pub date -
Jul 8, 2004
filing date -
Jul 18, 2003
priority date (Note) -
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Abstract
A method of restoring an active path between two nodes of a transport network upon occurrence of a failure includes the steps of determining an alternate path through the network and establishing a path protection involving the failed active path and the alternate path. If in layered networks, a failed path is restored at a lower layer and at a higher layer concurrently, the restoration actions in the higher network layer can thus be reverted easily.
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