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Proceedings Paper

A distributed multicast label switched path setup scheme to solve the multi-destination reservation collision
Author(s): Shu Du; Yunfeng Peng; Keping Long
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Paper Abstract

Generalized Multi-Protocol Label Switching (GMPLS) appears as a promising candidate to implement the control plane for next-generation optical networks. In GMPLS-based wavelength division multiplexing (WDM) optical networks, existing resource reservation protocol (RSVP) may fail to setup a multicast Label Switched Path (LSP) with high probability, since multiple destinations in one multicast session may reserve different wavelengths and result in reservation collision at branch nodes. In this work, we extend the existing GMPLS RSVP signaling protocol and propose an efficient scheme to set up optical multicast LSP and avoid wavelength resources collision, called Last-hop Label Set (LLS) scheme, by introducing a new object called Last-hop Label Set object in Resv message. Once the setup of a multicast LSP fails caused by wavelength reservation collision at a branch node, the branch node can re-reserves a new wavelength according to the Last-hop Label Set object within Resv messages. The numerical results indicate that the proposed LLS scheme offers lower blocking probability compared to the existing GMPLS signaling scheme.

Paper Details

Date Published: 19 November 2008
PDF: 8 pages
Proc. SPIE 7137, Network Architectures, Management, and Applications VI, 71372R (19 November 2008); doi: 10.1117/12.803812
Show Author Affiliations
Shu Du, Univ. of Electronic Science and Technology of China (China)
Yunfeng Peng, Univ. of Electronic Science and Technology of China (China)
Keping Long, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7137:
Network Architectures, Management, and Applications VI
Weisheng Hu; Shoa-Kai Liu; Ken-ichi Sato; Lena Wosinska, Editor(s)

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