Performance assessment of diffserv and intserv services in qos on an academic network using ns2

Abstract

Evaluación de desempeño en QOS para servicios DIFFSERV e INTSERV sobre una red académica mediante el uso de NS2 AbstractThis article provides a performance evaluation between DiffServ and IntServ, two computer architectures that allow the implementation of quality of service (QoS) to a given network. A simulated scenario in NS2 is proposed and the two types of QoS are implemented to evaluate variables such as jitter, bandwidth, delay, and packet loss, all with the aid of graphs and with statistical results. First, the simulation is done without implementing QoS; subsequently, IntServ and DiffServ are implemented to compare between the two architectures and define the advantages and disadvantages of each type of service and determine the most appropriate for a specific program.Key words: Bandwidth, quality of service, DiffServ, IntServ, Jitter, Loss, Delay, Throughput. ResumenEn el presente artículo se realiza una evaluación de desempeño entre DIFFSERV e INTSERV, dos arquitecturas que permiten implementar calidad de servicio (QoS) a una red determinada. Se propone un escenario simulado en NS2 y se implementan los dos tipos de calidad de servicio, con el fin de evaluar variables como Jitter, el ancho de banda, l retardo y la perdida de paquetes, todo esto con la ayuda de gráficos y resultados estadísticos. En primer lugar se realiza la simulación sin implementar QoS, posteriormente se implemente DIFFSERV e INTSERV con el fin de realizar una comparación entre las dos arquitecturas y poder definir las ventajas y desventajas de cada tipo de servicios y determinar cuales es el más apropiado para una aplicación en particular Palabras clave: Ancho de banda, calidad de servicio DIFFSERV, INTSERV, Jitter, Pérdidas, Retardos throughput

Attacks Notification of Differentiated Services Code Point (DSCP) Values Modifications

“…This solves issue of managing unfairness that arises when a network is handling multiple types of traffic with varying requirements [2]. However, TOS has been replaced by the DSCP field in both IPv4 and IPv6 headers [3]. The process of distinguishing and prioritizing different types of network traffic involves instructing network devices on how to recognize and differentiate between them.…”