Traffic engineering for MPLS-based virtual private networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Approximating optimal spare capacity allocation by successive survivable routing
IEEE/ACM Transactions on Networking (TON)
Building reliable MPLS networks using a path protection mechanism
IEEE Communications Magazine
Loop-free traffic engineering with path protection in MPLS VPNs
Computer Networks: The International Journal of Computer and Telecommunications Networking
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In this paper we investigate traffic engineering for fault restoration techniques in Multiprotocol Label Switching networks carrying QoS and best effort traffic. We consider off-line computation of the working and backup paths for the QoS traffic as well as the paths for the best effort traffic. Two cases of 1+1 and 1:1 path protection are considered. Our algorithms allow for control on the size of the label space for each router in the network and ensures that the created routes are loop free. In addition, explicit routes can be accommodated supporting both node and link affinity.