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Creating multipoint-to-point LSPs for traffic engineering

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3 Author(s)
S. Bhatnagar ; NEC Labs., Princeton, NJ, USA ; S. Ganguly ; B. Nath

Traffic engineering enhances an ISP's capability to manage and utilize its resources effectively. MPLS has emerged as an efficient packet forwarding tool that gives a significant boost to the traffic engineering capabilities of an ISP. A fundamental problem in MPLS is to reduce label space usage by label switched paths while meeting the requirements of the flows traversing the network. Using multipoint-to-point LSP trees has been proposed as one of the techniques to reduce label space usage. We look at the problem of creating multipoint-to-point LSPs given a set of precomputed point-to-point LSPs. We propose a heuristic for multipoint-to-point LSP creation and show its effectiveness.

Published in:

IEEE Communications Magazine  (Volume:43 ,  Issue: 1 )