Method, apparatus and system for generating label forwarding table on ring topology
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United States of America Patent
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Nov 3, 2015
Grant Date -
Jul 24, 2014
app pub date -
Mar 5, 2014
filing date -
Sep 6, 2011
priority date (Note) -
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Abstract
Embodiments of the present invention provide a method for generating a label forwarding table for a non-destination router on a ring topology. Embodiments of the present invention further provide an apparatus for generating a label forwarding table for a non-destination router on a ring topology and a method and system for generating two label switching paths LSPs of different ring directions on a ring topology. Technical solutions provided by the embodiments of the present invention are based on a clockwise label forwarding table and a counterclockwise label forwarding table that are generated for each non-destination router on the ring topology. When it is found that traffic cannot be forwarded to a destination router by using one of the two label forwarding tables, the non-destination router performs traffic switching and uses the other label forwarding table to forward the traffic.
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