A fault-tolerant routing model for unicast flows in MPLS-network is proposed. The flow-oriented model is represented by algebraic equations and inequalities characterizing the state of MPLS-network, i.e. load of its communication links. The proposed model includes the possibility to implement three basic backup schemes in accordance with the concept of Fast ReRoute: link, node and path protection. The model describes also three different types of condition of the links overload prevention for different variants of channel resource use. The above example demonstrates the advantages of using the proposed conditions of the links overload prevention in paper.
Lemeshko O., Arous K. Fast ReRoute Model for Different Backup Schemes in MPLS-Network // Proceedings of First International IEEE Conference «Problems of Infocommunications. Science and Technology» (PICS&T-2014). – Kharkiv, Ukraine: 14-17 October, 2014. – PP. 39-41.

In this paper a flow-based model balancing queues at the nodes of MPLS-network is proposed. The novelty of the model is that it, in the contrast to the previously known models takes into account the features of the Traffic Engineering Queues technology. This technology has a purpose to ensuring load balancing of the node buffer resource.
Lemeshko O.V., Ali S. Ali, Starkova O.V. A flow-based model of dynamic queue balancing in the MPLS-network with traffic engineering queue support // 11-th International Conference THE EXPERIENCE OF DESIGNING AND APPLICATION OF CAD SYSTEMS IN MICROELECTRONICS Polyana-Svalyava-(Zakarpattya), UKRAINE 23 - 25 February 2011: Publishing House of Lviv Polytechnic, 2011. – P. 116-117.