Failure protection for traffic-engineered bit indexed explicit replication
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United States of America Patent
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Nov 6, 2018
Grant Date -
Sep 1, 2016
app pub date -
Feb 26, 2016
filing date -
Feb 26, 2015
priority date (Note) -
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Abstract
Methods and network devices are disclosed for failure protection in traffic-engineered bit indexed explicit replication networks. In one embodiment, a method includes receiving at a node in a network a message comprising a message bit array, where bit positions in the message bit array correspond to respective links in the network. The method further includes evaluating a bit value at a bit position in the message bit array, where the bit position corresponds to a network link represented in a forwarding table for the node, checking for a failure state of the link represented in the forwarding table, and, responsive to a determination of a failure state of the link, modifying one or more bit values in the message bit array. In one embodiment a network device includes a network interface, a memory configured to store a forwarding table, and a processor configured to carry out the methods.
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