The Optical Virtual Private Networks (OVPNs) are going to be the next step of the present Internet Protocol or Multi-Protocol Label Switching-based VPNs. Since reliability and continuity of service are the major requirements in the design of OVPN, researchers are now paying more attention to its survivability issue. In this paper, we propose a highly simple approach for spreading out the lightpaths over the core optical network using shortest pair algorithm that mitigates the impact of multiple link failures in an OVPN. The special feature of the proposed Distributed Lightpath Routing algorithm lies in its simplicity and less computation for the working path as well as for the backup path.
Photonic Network Communications – Springer Journals
Published: Jan 23, 2006
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