Performance Analysis for QoS Provisioning in MPLS Networks

Abstract

LSR(Label Switching Router)s in MPLS (Multiprotocol Label Switching) networks map arriving IP flows into some labels on Layer 2 switching fabric and establish LSP(Label Switching Path)s. By using LSPs, LSRs can not only transmit IP packets fast with cut-through mechanism, but also solve traffic engineering issue to maximize resource utilization in the whole MPLS networks. So far, we have analyzed delay performance of LSR by focusing only on the real time traffic transmission. In this paper, we will consider the case where non-real time traffic arrives at LSR as well as real time traffic and analyze those packet loss rate under the assumption that the cut-through transmission is applied only to real time traffic. Furthermore, we discuss the bandwidth allocation policy and the buffer dimensioning to meet the requirement with respect to both delay for real time traffic and loss probability for non-real time one, and show the guide for QoS provisioning in MPLS networks.

Comparativa del rendimiento entre las tecnologías VxLAN y MPLS

“…Ante ello han nacido nuevas tecnologías que representan soluciones de conexión de diversa índole, pero que su implementación contempla una serie de condiciones ligadas en gran medida al consumo de recursos. Según Tamura et al (2004), en su artículo considera el caso del tráfico en tiempo real y no real que llega al Label Switching Router (LSR), así como la probabilidad de demora y pérdida de paquetes suponiendo que el segmento del remitente sólo es válido para el tráfico en tiempo real; además, presentan estrategias de asignación de ancho de banda y tamaños de búfer para satisfacer las demandas de tráfico en tiempo dichos tiempos antes ya mencionados, presentando pautas para la Calidad del Servicio (QoS) en redes MPLS.…”

Performance investigations on data protection algorithms in generalized multi protocol label switched optical networks

“…It employs information in the label to identify the packets and forwards them based on this label information rather than destination IP address in the packet 4 . The QoS in GMPLS network helps the device to handle the traffic efficiently as prescribed by each subscriber's network policy 5 . The GMPLS network is shown in Fig.…”