MPLS traffic engineering for point-to-multipoint label switched paths
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United States of America Patent
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Jan 2, 2018
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app pub date -
May 23, 2016
filing date -
Feb 3, 2004
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Abstract
A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.
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