CE dual-homing protection in layer 1 VPN

Shu Du; Yunfeng Peng; Keping Long

doi:10.1117/12.803810

19 November 2008 CE dual-homing protection in layer 1 VPN

Shu Du, Yunfeng Peng, Keping Long

Proceedings Volume 7137, Network Architectures, Management, and Applications VI; 71372M (2008) https://doi.org/10.1117/12.803810
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

Layer 1 VPN (L1VPN) extends the notion of VPN to the optical domain to provide virtually dedicated circuit like leased lines, so that the security is more enhanced. Despite their secure gains from channel isolation, VPNs still suffer fragilities resulting from link-failures or node-failures. Extensive activities on survivability designs for wavelength-routed optical networks are proposed, including various protection and restoration schemes, but concerns on network edge are rare. Dual-homing is an effective skill to achieve survivability gains for L1VPNs. There are two dual-homing mode: Active/Standby mode and Load-Sharing mode In this paper, we investigate the problem of PE assignment, which is the key of dual-homing design and is NP-hard. We formulate it as an integer programming problem, and propose heuristic solutions. Simulation results show that the proposed solutions work in a correct and effective way and the Load-Sharing mode has higher bandwidth efficiency than Active/Standby mode.

Citation Download Citation

Shu Du, Yunfeng Peng, and Keping Long "CE dual-homing protection in layer 1 VPN", Proc. SPIE 7137, Network Architectures, Management, and Applications VI, 71372M (19 November 2008); https://doi.org/10.1117/12.803810

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