Inter-ring protection for shared packet rings
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United States of America Patent
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Oct 13, 2009
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app pub date -
May 15, 2003
filing date -
May 15, 2003
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Abstract
A method for providing inter-ring protection in shared packet rings includes identifying an active node which is connected to a ring interconnect node on the same ring as the active node and connected to a peer node on a different ring with a ring interconnecting link. When the active node is in active mode and receives notification of a failure of the ring interconnecting link or peer node, the active node sends a message to the ring interconnect node so that the ring interconnect node switches from standby mode to active mode. The active node is then changed to standby mode.
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