Title :
A New NS2 Simulation Module for Bandwidth Constraints Models in DS-TE Networks
Author :
Adami, D. ; Callegari, C. ; Giordano, S. ; Pagano, M.
Author_Institution :
Dept. of Inf. Eng., Univ. of Pisa, Pisa
Abstract :
In recent years, network operators rolled out new revenues-generating services by using IP/MPLS networks. MPLS traffic engineering (TE) allows the creation of end-to-end paths with guaranteed bandwidth as well as the optimization of transmission resources, but it does not provide end-to-end QoS to specific traffic flows. DiffServ-aware MPLS-TE (DS-TE) improves the MPLS-TE model by allowing bandwidth reservations to be performed on a per-class basis. In particular, the Bandwidth Constraints (BCs) model is a building block of the DS-TE architecture, since it establishes how bandwidth is allocated to different traffic classes. This paper deals with the development of a new software module for the simulation of DS- TE networks and BCs models within the Network Simulator 2 (NS2) environment. The results of some simulations are reported to show the operational working of the developed modules and the benefits coming from the use of the DS-Te architecture.
Keywords :
DiffServ networks; IP networks; bandwidth allocation; multiprotocol label switching; quality of service; telecommunication traffic; DS-TE networks; DiffServ-aware MPLS-TE; IP networks; MPLS networks; MPLS traffic engineering; NS2 simulation module; QoS; bandwidth constraints models; bandwidth reservations; network operators; revenues-generating services; software module; traffic flows; Bandwidth; Communication system traffic control; Computer architecture; Electronic mail; Maintenance engineering; Multiprotocol label switching; Quality of service; Telecommunication traffic; Tellurium; Traffic control;
Conference_Titel :
Communications Workshops, 2008. ICC Workshops '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2052-0
Electronic_ISBN :
978-1-4244-2052-0
DOI :
10.1109/ICCW.2008.53
