Christian Awad, Brunilde Sansò, A. Girard,
... In previous work, we proposed two protection methods, DiffServ and DiffProtect and examined, on a small network, whether DiffServ can be used as a protection mechanism against ... WDM networks. The results showed that, on average, DiffServ can provide better QoS guarantees than its optical ... also found that DiffProtect may perform better than DiffServ under some extreme failure situations so that DiffServ cannot totally replace optical protection in a network ... node mesh network which can be protected by DiffServ, DiffProtect or even a combination of both (MixProtect). ...
Tópico(s): Network Traffic and Congestion Control
2008 - Elsevier BV | Computer Networks
U. Fiedler, Polly Huang, Bernhard Plattner,
... of our study is how to provision a diffserv (differentiated service) intra-net serving three classes of ... is worthwhile converging different traffic classes or deploying diffserv, we cautiously examine capacity requirements in three sets ... i) three dedicated networks, ii) one network without diffserv support , and iii) one network with diffserv support. We find that for the business intra-net of our study, integration without diffserv may need considerable over-provisioning depending on the ... addition, we observe significant capacity savings in the diffserv case; thus conclude that deploying diffserv is advantageous. ...
Tópico(s): Mobile Agent-Based Network Management
2001 - Springer Science+Business Media | Lecture notes in computer science
Jitae Shin, Jong Won Kim, C.‐C. Jay Kuo,
... practically categorized packet video and relative differentiated service (DiffServ or DS) network employing unified priority index and ... mechanism under a given pricing model (e.g., DiffServ level differentiated price/packet). Video categorization is based ... propose an adaptive packet forwarding mechanism for a DiffServ network to provide persistent service differentiation. Effective QoS ... then performed by mapping video packets onto different DiffServ levels based on RPI. To verify the efficiency ... ITU-T H.263+ codec over a simulated DiffServ network. Results show that the proposed QoS mapping ...
Tópico(s): Video Coding and Compression Technologies
2001 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Multimedia
... traffic in MPLS backbone networks in conjunction with DiffServ (Differentiated Services) support.DiffServ itself does not have the ability to control ... QoS solutions, we know that the integration of DiffServ and MPLS TE satisfies the guaranteed QoS requirement ... in terms of Packet Delay Variation (PDV) over DiffServ with or without MPLS TE in IPv4/IPv6 ... performance metric such as PDV.The effectiveness of DiffServ and MPLS TE integration in IPv4/IPv6 network ...
Tópico(s): Software-Defined Networks and 5G
2012 - | International Journal of Distributed and Parallel systems
Christos Bouras, Afrodite Sevasti,
... in the case of backbone, transport networks the DiffServ architecture has prevailed, due to its scalability and ... feasibility. The provisioning of services according to the DiffServ framework has in turn raised the requirements for ... mechanisms that preserve the potential and flexibility of DiffServ. At the same time, such mechanisms should reflect ... research, the principles that a pricing scheme for DiffServ-based services should follow are presented, stressing the ... analytical approach to pricing a particular class of DiffServ-based services and a methodology for applying this ...
Tópico(s): Software-Defined Networks and 5G
2004 - Elsevier BV | Computer Communications
Christos Bouras, Afroditi Sevasti,
... in the case of backbone, transport networks the DiffServ architecture has prevailed, due to its scalability and ... feasibility. The provisioning of services according to the DiffServ framework has in turn raised the requirements for ... mechanisms that preserve the potential and flexibility of DiffServ. At the same time, such mechanisms should reflect ... research, the principles that a pricing scheme for DiffServ-based services should follow are presented, stressing the ... analytical approach to pricing a particular class of DiffServ-based services and a methodology for applying this ...
Tópico(s): Software-Defined Networks and 5G
2004 - Elsevier BV | Computer Communications
Haowei Bai, Mohammed Atiquzzaman, William A. Ivancic,
Integrated Services (IntServ) and Differentiated Services (DiffServ) are two of the current approaches to provide Quality of Service (QoS) guarantees in the next generation Internet. IntServ aims at providing ... the core of the network. On the contrary, DiffServ is designed to provide QoS to aggregates, and ... the combination of IntServ at the edge and DiffServ at the core will be able to provide ... to perform mapping of services between IntServ and DiffServ, there hasn't been any study to quantitatively ... by end applications when IntServ is run over DiffServ. We have used goodput, drop ratio and non- ...
Tópico(s): Advanced Optical Network Technologies
2002 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Ana Custura, Raffaello Secchi, Gorry Fairhurst,
The differentiated service architecture (DiffServ) provides a means for network devices to classify traffic based on the DiffServ codepoint (DSCP) and to map the traffic to ... DSCP value inside and at the boundaries of DiffServ domains. This paper provides the results of a ... to comment the opportunities for more widely deploying DiffServ QoS. Our results identify a set of remarking ... to observe clearing of the bits in the DiffServ field, as previously believed for routers in the ...
Tópico(s): Network Traffic and Congestion Control
2018 - Elsevier BV | Computer Communications
... have been defined. Of these architectures, differentiated services (DiffServ) is seen as a significant contributor to the ... implementation. This paper presents an abstract model for DiffServ with assured forwarding (AF) per-hop behavior (PHB). ... review of existing methodologies for performance measurements for DiffServ, this paper proposes a dynamic model for AF ... the starting point for the detailed specification of DiffServ PHBs. Experimental results illustrate, verify, and justify the ...
Tópico(s): Caching and Content Delivery
2007 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Instrumentation and Measurement
Brunilde Sansò, Christa Awad, A. Girard,
... In this article, we investigate to what extent DiffServ can provide service protection against optical failures in ... networks. For this, we propose two mechanisms: a DiffServ/WDM method and a WDM differentiated protection technique ... improvement in delay and jitter under failure when DiffServ is used. Thus, the proposed DiffServ implementation can be used as an affordable and ...
Tópico(s): Optical Network Technologies
2006 - Institute of Electrical and Electronics Engineers | IEEE Network
Angelos Michalas, Malamati Louta, Paraskevi Fafali, George T. Karetsos, Vassilios Loumos,
... important approaches is the so‐called Differentiated Services (DiffServ) architecture, which provides a scalable mechanism for QoS ... a TCP/IP network. The main concept underlying DiffServ is the aggregation of traffic flows at an ... each traffic flow according to several classification criteria. Diffserv is classified under two taxonomies: the absolute and the relative. In absolute DiffServ architecture, an admission control scheme is utilized to ... absolute bounds of specific QoS parameters. The relative DiffServ model offers also QoS guarantees per class but ...
Tópico(s): Wireless Networks and Protocols
2004 - Wiley | International Journal of Communication Systems
Toufik Ahmed, Raouf Boutaba, Ahmed Mehaoua,
... a practical approach to managing multimedia traffic in DiffServ network, using network monitoring feedback and control. We ... bandwidth monitors installed on each node of a DiffServ Domain. The bandwidth monitors interact with a policy ... policy(ies) that should be enforced by the DiffServ network. The implementation of the selected policies typically ... QoS, as interpreted by the marker at the DiffServ edge router and marked according to network state. ...
Tópico(s): Peer-to-Peer Network Technologies
2004 - Elsevier BV | Computer Communications
We focus on DiffServ for QoS provisioning in radio access networks (RANs). We first give short explanations of the DiffServ model. We then investigate the problems of DiffServ under IP mobility environments. We also present several DiffServ proposals in IP-based access networks. We finally ...
Tópico(s): Mobile Agent-Based Network Management
2003 - Institute of Electrical and Electronics Engineers | IEEE Wireless Communications
Aaron Striegel, Abdelmadjid Bouabdallah, Hatem Bettahar, Manimaran Govindarasu,
... two key technologies, namely, multicasting and Differentiated Services (DiffServ). Although both are complementary technologies, their integration is ... Multicasting (EBM), for providing multicast transport across a DiffServ domain. EBM leverages the intelligence of edge routers in DiffServ and a new entity called a Multicast Broker ( ... Trees (ECT), which captures the unique aspects of DiffServ and EBM. Finally, we present detailed simulation studies ...
Tópico(s): Caching and Content Delivery
2003 - Springer Science+Business Media | Lecture notes in computer science
Hongjun Su, Mohammed Atiquzzaman,
Differentiated services (DiffServ) networks use two type of routers: edge routers mark the packet headers according to their service profile, while ... headers. Most previous studies on the performance of DiffServ have considered either the effect of the edge ... at the core router on the performance of DiffServ, the authors propose a simple model that takes ... model. The model shows that the performance of DiffServ is largely flow-based rather than desired-aggregate-based, and the DiffServ network suffers from unfairness issues.
Tópico(s): Advanced Optical Network Technologies
2003 - Institution of Engineering and Technology | IEE Proceedings - Communications
Ian F. Akyildiz, Tricha Anjali, Liang Chen, Jaudelice C. de Oliveira, Caterina Scoglio, Agatino Sciuto, J. A. Smith, G. Uhl,
... varying QoS requirements. The IETF has proposed the DiffServ architecture as a scalable solution to provide Quality ... provide quantitative guarantees and optimization of transmission resources, DiffServ mechanisms should be complemented with efficient traffic engineering ( ... technology. Currently, the combined use of Differentiated Services (DiffServ) and MPLS is a promising technique to provide ... In this paper, TEAM, an automated manager for DiffServ/MPLS networks is introduced and its design. The ...
Tópico(s): Network Traffic and Congestion Control
2003 - Elsevier BV | Computer Communications
Andrew Simmonds, Priyadarsi Nanda,
The Differentiated services architecture (diffserv) proposed by the Internet Engineering Task Force (IETF) [1] provides service differentiation in the Internet in an efficient and scalable manner. The central idea of diffserv is that the Type Of Service field (TOS) ... having different parameters. A well known problem with diffserv [2, 3] is that, being based on aggregate ... to-end QoS. We believe our approach to diffserv can help to achieve dynamically allocated end-to- ... simple and well suited to implementation in a diffserv internet of multiple domains. Bandwidth Brokers (BB) in ...
Tópico(s): Mobile Agent-Based Network Management
2003 - Springer Science+Business Media | IFIP advances in information and communication technology
Jian Zhao, Hossam S. Hassanein, Jieyi Wu, Guanqun Gu,
Differentiated services (DiffServ) is the latest model proposed by Internet engineering task force (IETF) to support quality of service (QoS) in ... earlier model, namely, integrated services (IntServ). Currently, the DiffServ model is the preferred architecture widely accepted by ... the networking research community. The goal of the DiffServ model is to avoid maintaining large amount of ... out aggregate resource reservation at edge routers. Therefore, DiffServ calls for a very different routing framework from ...
Tópico(s): Caching and Content Delivery
2002 - Elsevier BV | Computer Communications
Nabil Seddigh, Biswajit Nandy, Peter Pieda, Jamal Hadi Salim, A. Chapman,
... has recently been given to the differentiated services (Diffserv) approach to provide Quality of Service (QoS) for ... of the most popular services proposed for the Diffserv approach are the Assured and Premium Services. In this work prototypical implementations of Diffserv components are described. The prototypes are used to ... proposed as a basis for assured services in Diffserv.
Tópico(s): Wireless Networks and Protocols
1998 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Differentiated Services (DiffServ) and Multi-Protocol Label Switching (MPLS) are attracting attention as Quality of Service (QoS) technologies for the large-scale Internet. DiffServ cannot offer end-to-end QoS by itself, ... Constraint-Based Routing (CBR) schemes in addition to DiffServ. CBR schemes compute explicit routes for Label-Switched ... MPLS networks. In this paper, we assume two DiffServ classes: Expedited Forwarding (EF) class which corresponds to ... corresponds to data traffic requiring high throughput. Four DiffServ-aware CBR schemes are constructed, based on a ...
Tópico(s): Software-Defined Networks and 5G
2003 - Elsevier BV | Computer Communications
Mohammad Azmi Ridwan, Nurul Asyikin Mohamed Radzi, Wan Siti Halimatul Munirah Wan Ahmad, Fairuz Abdullah, M. Z. Jamaludin, M. N. Zakaria,
... MPLS technologies, including traffic engineering (TE), differentiated services (DiffServ), protection and restoration, and MPLS-transport profile (MPLS- ... Eugen [5] 2017 reviewed the performance of MPLS DiffServ Kurimoto et al. [6] 2017 reviewed the MPLS ... 3 elaborates on the MPLS technologies, including TE, DiffServ, protection and restoration, MPLS-TP and implementation of ... MPLS technologies, including MPLS-TE, protection and restoration, DiffServ, MPLS-TP and implementation of MPLS-TP in ...
Tópico(s): Network Traffic and Congestion Control
2019 - Institution of Engineering and Technology | IET Communications
Yusung Kim, Young‐Hoon Kim, Jun Bi, Ikjun Yeom,
... In this paper, we propose a differentiated services (diffserv) model for NDN. For scalability, the proposed diffserv model is designed to follow the guidelines from the diffserv model in the current Internet. Traffic classification and ... in ns3, and show the effectiveness of NDN diffserv through extensive simulations.
Tópico(s): Cooperative Communication and Network Coding
2015 - Elsevier BV | Journal of Network and Computer Applications
Mian Guo, Shengming Jiang, Quansheng Guan, Mei Liu,
... integrated services (IntServ) and per‐class differentiated services (DiffServ) as well as their variants. To address the ... of IntServ and the coarse QoS granularity of DiffServ, we proposed the per‐packet differentiated queueing service. ... queueing service consumes the least bandwidth resources and DiffServ can minimise the buffer size whereas IntServ can ...
Tópico(s): Wireless Networks and Protocols
2013 - | Transactions on Emerging Telecommunications Technologies
Elizabeth Rendón-Morales, Jorge Mata‐Díaz, Juanjo Alins, José L. Muñoz, Óscar Esparza,
... link with the support of the Differentiated Services (DiffServ) architecture to provide quality of service (QoS). This ... challenge of dealing with variable bandwidth, whereas the DiffServ architecture introduces the challenge of dealing with different priorities. In this paper, we propose a DiffServ model that includes a modified queuing mechanism to ... of the assured forwarding traffic class. This modified DiffServ model is simulated and tested, considering the interaction ...
Tópico(s): Wireless Communication Networks Research
2012 - Wiley | International Journal of Communication Systems
Thomas Demoor, Joris Walraevens, Dieter Fiems, Herwig Bruneel,
... class priority queue in order to model a DiffServ router with Expedited Forwarding Per-Hop Behavior for ... models assume infinite queue capacity but in a DiffServ router the capacity for high-priority traffic is ... in order to accurately capture performance in a DiffServ environment.
Tópico(s): Interconnection Networks and Systems
2010 - Elsevier BV | AEU - International Journal of Electronics and Communications
Qiong Liu, Hui Li, Yuefeng Ji, Yaojun Qiao,
... now the EPON adopts mostly differentiated services model (Diffserv) that only provides quality control on traffic aggregation, ... proposes to apply integrated services model (Intserv) in Diffserv-based EPON, which uses per-flow processing to ... QoS. In the simulation, a framework of combined Diffserv and Intserv model is employed in an EPON ...
Tópico(s): Optical Network Technologies
2009 - Elsevier BV | The Journal of China Universities of Posts and Telecommunications
Mohamed A. Elshaikh, Мohamed Othman, S. Shamala, Jalil Md Desa,
... Internet demands. One such technology is Differentiated Services (DiffServ). DiffServ routers provide Per Hop Behaviors (PHBs) to aggregate ... is an unfairness problem that occur in a DiffServ networks. In this paper an improved version of ...
Tópico(s): Advanced Optical Network Technologies
2008 - Elsevier BV | Computer Communications
Dimitrios J. Vergados, Dimitrios D. Vergados, Ilias Maglogiannis,
... Differentiated Services in Telemedicine forms a grand challenge. DiffServ may support a number of e-health applications ... the same time QoS guarantees. Resource Allocation in DiffServ for e-health application is inherently different in ... and network structure. This paper presents a novel DiffServ architecture for QoS provisioning in emergency Telemedicine.
Tópico(s): IoT and Edge/Fog Computing
2006 - Institute of Electrical and Electronics Engineers | Globecom
Jie Yang, Jian Ye, Symeon Papavassiliou, Nirwan Ansari,
... service provisioning at routers in the differentiated service (DiffServ) network is proposed. The main objective of this ... the QoS granularity and flexibility offered in the DiffServ network model and improve both the network resource ... request dropping probability than the integrated service over DiffServ schemes. Furthermore, it is shown that it preserves ... flows and maintains the simplicity feature of the DiffServ network model.
Tópico(s): Advanced Wireless Network Optimization
2005 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
Yong Xu, Huazhou Liu, Qing‐An Zeng,
... wired networks is carried out through Differentiated services (DiffServ). Edge routers in DiffServ domain classify incoming flows into different per‐hop ... preemptive priority handoff and adaptive resource allocation scheme. DiffServ PHB groups are mapped into different wireless and ... in wireless part of the system along with DiffServ to give further guarantee for low delay, low ...
Tópico(s): Wireless Networks and Protocols
2005 - Wiley | Wireless Communications and Mobile Computing