In-band signaling for point-multipoint packet protection switching
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United States of America Patent
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Jul 29, 2014
Grant Date -
Jan 31, 2013
app pub date -
Jul 16, 2012
filing date -
Apr 9, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A method and system provide in-band protection switch signaling in a communication system arranged as a point-to-multipoint tree. The point-to-multipoint tree includes a root node communicatively coupled to a plurality of leaf nodes through both a working link and a protection link. Data is transferred through a current link of the point-to-multipoint tree. The current link is either the working link or the protection link. A fault is detected in the current link in the point-to-multipoint tree. Each leaf node in the point-to-multipoint tree is notified of the fault using the current link. Upon receiving the notification, the root node and each leaf node switch to the other link of the working link and the protection link.
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