Protection of a bidirectional label switched path
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United States of America Patent
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Apr 21, 2015
Grant Date -
Apr 24, 2014
app pub date -
Oct 19, 2012
filing date -
Oct 19, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In one embodiment, a primary bidirectional LSP is established between an originating LSP packet switching device and a destination LSP packet switching device through an intermediate packet switching device. A corresponding backup LSP is also established. The originating LSP packet switching device sends a particular label switched packet to the destination LSP packet switching device over the primary bidirectional LSP. An intermediate packet switching device sends the particular label switched packet back to the originating LSP packet switching device over the primary bidirectional LSP in response to an error condition identified as affecting the primary bidirectional LSP towards the destination LSP packet switching device. The originating LSP packet switching device receives the particular label switched packet and sends it to the destination packet switching device over the backup LSP.
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