Fault Tolerance and Load Balancing in QoS Provisioning with Multiple MPLS Paths
IWQoS '01 Proceedings of the 9th International Workshop on Quality of Service
Routing Bandwidth Guaranteed Paths with Restoration in Label Switched Networks
ICNP '01 Proceedings of the Ninth International Conference on Network Protocols
Challenges for MPLS in optical network restoration
IEEE Communications Magazine
Design and implementation of a scalable constraint-based routing module for QoS path computation
Proceedings of the 4th international IFIP/ACM Latin American conference on Networking
Maximizing restorable throughput in MPLS networks
IEEE/ACM Transactions on Networking (TON)
Overlay routing under geographically correlated failures in distributed event-based systems
OTM'10 Proceedings of the 2010 international conference on On the move to meaningful internet systems: Part II
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Uninterrupted transmission in case of failure is a major concern in MPLS based networks, and path protection is an effective method for this. Existing approaches towards path protection include local and global path protection. However, they provide fixed solutions and cannot be adapted to QoS and resource constraints for various kinds of traffic. In this paper, we introduce a new approach, "segment" based path protection, which provides efficient recovery from failure and guarantees QoS (like end-to-end delay, jitter) even after failure. We develop a resource-efficient algorithm which provides Segment-based protection for a given primary path, which guarantees an upper bound on the switch-over time. The protection configuration can also adapt to various QoS constraints, hence availing flexibility to the network administrator. We also present simulation results which show that Segment-based algorithms perform well in comparison to existing schemes in terms of resource reservation and assurance of QoS.