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

Carlos Andrés Martínez Alayón, Danilo López, Jhon Jaime Ramírez Ochoa, Rubén Darío Gómez Tovar


This 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.


Bandwidth; quality of service; Diffserv; inServ; Jitter; Loss; Delay; Throughput

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R.J. Bril, Hentschel C, Steffens E.F.M, Gabriani M, Vn Loo G. Multimedia QoS in consumer

terminals. Signal Processing Systems, 2001 IEEE Workshop on, Conference Publication,

pages 332-343. 2001.

Tang Liang, Zhu Jin, Xi Hong-Sheng. A case for multimedia QoS provisioning in Home Networks. Communications (ICC), 2001 IEEE International Conference on. Pages 1-6. 2011.

Vogt Christian. Admission control and resource reservation on the internet. Newsletter

ACM SIGSOFT Software Engineering Notes. Volume 28 Issue 3, May 2002. Pages 80-87.

Chahed T, Hebuterne G, Fayet C. Mapping of loss and delay between intserv and diffserv.

Universal Multiservice Networks. ECUMN 200. 1st, European Conference on. Pages 48-55.

RFC 791: Internet Protocol, September 1981, available in:

RFC 1633: Integrated services in the Internetarchitecture: an overview, June 1994, available in:

Min Cai, Junquing Xie, Yun Wang, Guanqun Gu. An implementation model of IntServ/RSVP based CORBA A/V Stream Service. Technology of Object-Oriented Languages and Systems, IEEE Explorer. Conference Publication, 2000.

R. Montaña, presentación Universidad de Valencia. Consultado Junio 5 de 2013, disponible en

Schnitter Stefan, Hartleb Franz, Horneffer Martin. Quality of Service class specific traf-fic matrices in ip/mpls networks. Proceedings of the 7th ACM SIGCOMM conference on Internte measurement. Pages 253-258. 2007.

RFC 2474: Definition of the Differentiated Services Field (DS Field) in the IPv4 and

IPv6 Headers, available in: rfc2474.txt

Villareal, Marco Aurelio [on line] available in:


QoS Quality of sevice VoIP [on line], consulted June 5, 2013, available in: http://www.voip-

QoS-experiment, [on line], consulted June 5, 2013, available in:

R. Montaña, presentación Universidad de Valencia. Consulted June 5, 2013, page 10, available in:

SARMIENTO, Jairo. Integración MPLS RSVP-TE en entornos Multicast. Bogotá, 20011, 122

pag. Trabajo de grado (Ingeniero Electrónico). Universidad Distrital Francisco José de Caldas: Facultad de Ingeniería.

YANG, Baijian y MOHAPATRA, Prasant. Multicasting in MPLS Domains. Department of Computer Science and Engineering. University of California. March 2003.

BOUDANI, Ali and COUSIN, Bernard. Multicast Tree in MPLS Network. Campus Universitaire de BeaulieuRennes, 2005.

DONOSO, Yesid and FABREGAT, Ramón. Extensión de los métodos Hop-by-Hop, CR-LDP y RSVP-TE para Multicast IP sobre MPLS. Universidad del Norte, Barranquilla, Colombia.

Aggarwal, R., YASUKAWA, S. and Papadimitriou, D. RFC 4875: Extensions to Resource

Reservation Protocol - Traffic Engineering (RSVP-TE) for Point-to-Multipoint TE Label Switched Paths (LSPs). May 2007. Copyright. (C) The IETF Trust (2007). Consulted October 14, 2011, available online in:

S. Deering et al., “Protocol Independent Multicast Dense Mode Specification”. IETF. Novem-

ber 1998.

D. Awduche et al., “RSVP-TE: Extensions to RSVP for LSP Tunnels”. IETF RFC 3209. December 2001.

H. Holbrook and B. Cain. “Source-Specific Multicast for IP”. IETF RFC 4607. August 2006.

MPLS Point to Multipoint Traffic Engineering. November 2009. Consulted October 15, 2011,

Available in:

E. Osborne and A. Simha. Traffic Engineering with MPLS. Ed. Cisco Press. Indianapolis, USA. 2002.

MPLS Traffic Engineering – Fast Reroute Link and Node Protection. December 2006. Con-

sulted October 15, 2011, available in:

Official Page Graphical Network Simulator, GNS3 (on line). Consulted October 15, 2011,

available in:



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