Method and apparatus for automatic port interconnection discovery in an optical network
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United States of America Patent
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May 25, 2010
Grant Date -
Jan 30, 2003
app pub date -
Jul 18, 2001
filing date -
Jul 18, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
To automatically discover the port connections for all nodes in a network, a master node generates a predetermined optical signal and transmits the predetermined optical signal to a neighboring node, which signal identifies the port on which the master node transmitted the predetermined signal. The recipient transmits a reply signal to the predecessor node and to the master node via a control channel, which identifies a port on which the predetermined optical signal was received by the neighboring node. By successively repeating this process in a methodical manner, the master node can discover all of the port interconnections in the optical network. Also each node can discover all its port interconnections to its neighbors. Moreover, by selecting controlling the state (e.g., terminate, open) of the ports of the non-master nodes in the network, the master node can control which nodes receive the predetermined signal, thereby ensuring proper port discovery.
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