Authors: Rawya Rizk, Alyaa Elmaghraby, Mahmoud Marie
Addresses: Electrical Engineering Department, Port Said University, Port Said, 42523, Egypt. ' Electrical Engineering Department, Port Said University, Port Said, 42523, Egypt. ' Computers and Systems Engineering Department, Al-Azhar University, Cairo, Egypt
Abstract: Path protection is an important aspect to realise uninterrupted transmission in case of failure MPLS-based networks. In this paper, it is shown that none of the existing protection backup path methods is optimal at all protection parameters and network constraints. Hence, a general QoS backup protection optimisation policy applicable to a wide range of network situations and traffic types is proposed. A comparison between the proposed policy and the conventional protection backup methods is performed. The numerical results show a significant improvement of the proposed QoS protection over conventional protection backup methods at variable protection parameters, network constraints and traffic types.
Keywords: communication networks; multiprotocol label switching; MPLS; path protection; QoS routing; restoration; optimisation; quality of service; QoS backup protection; QoS protection; network constraints; traffic types.
International Journal of Communication Networks and Distributed Systems, 2011 Vol.6 No.4, pp.420 - 438
Published online: 05 Jun 2011 *Full-text access for editors Access for subscribers Purchase this article Comment on this article