An OAM function to improve the packet loss in MPLS-TP domains for prioritized QoS-aware services

作者：Rodriguez Perez Francisco Javier^*; Gonzalez Sanchez Jose Luis; Carmona Murillo Javier; Cortes Polo David

来源：International Journal of Communication Systems, 2015, 28(6): 1037-1052.

DOI：10.1002/dac.2742

• MPLS-TP
• congestion
• RSVP-TE
• Gossip
• local retransmissions

The emergence of new kinds of applications and technologies (e.g., data-intensive applications, server virtualization, and big data technology) has led to a higher utilization of network resources. These services imply increased bandwidth consumption and unexpected congestions, especially in backbones. In this article, a novel proposal is studied with the aim of improving the performance of prioritized forwarding equivalence classes in congested Multiprotocol Label Switching Transport Profile (MPLS-TP) domains. The congestion impact on those QoS-aware services that require high reliability and low delay is analyzed. A new policy has been implemented on MPLS-TP, which is a technology that provides QoS by means of flow differentiation in the Internet backbones. The proposal is known as Gossip-based local recovery policy and is offered as an operation, administration, and management function to allow local recovery of lost traffic for MPLS-TP privileged forwarding equivalence classes. In order to fulfill the requirements for implementation on MPLS-TP, a minimum set of extensions to resource reservation protocol traffic engineering has also been proposed to provide self-management capable routes. Finally, we have carried out a performance improvement measurement by means of an analytical model and simulations.

• 出版日期2015-4