BFD-based failure detection and localization in IP over OBS/WDM multilayer network
International Journal of Communication Systems
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One desirable application of BFD (Bi-directional Forwarding Detection) in MPLS-OAM (Operation, Administration, and Maintenance ) is to detect MPLS ( Multple Protocol Label Switching) LSP (Label Switching Path) data plane failures. Besides detectiong failures, LSP-Ping can furtherly verify the LSP data plane against the control plane. However, the control plane processing required for BFD control packets is relatively smaller than that for LSP-Ping messages. In this paper,we will propose how to combinate LSP-Ping and BFD to provide faster data plane failure detection, which possiblely operates on a greater number of LSPs.