Source identification preservation in multiprotocol label switching networks
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United States of America Patent
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May 10, 2016
Grant Date -
Oct 8, 2015
app pub date -
Jun 22, 2015
filing date -
Dec 21, 2012
priority date (Note) -
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Abstract
A source Multiprotocol Label Switching (MPLS) network element, a destination MPLS network element, and a MPLS method are disclosed which introduce the concept of a source label into the MPLS label stack for source identification preservation. The source label can located at the bottom of the label stack thereby being a last item popped in the MPLS stack at the destination node, or indicated subsequent to an explicit reserved label identifier. The source label is used for maintaining Operations, Administration, and Maintenance (OAM) data efficiently without requiring deep packet inspection.
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