Title :
μ service level agreement: a new bandwidth guarantee of flow-level granularity in internet VPN
Author :
Chien-Chung Su ; Lee, Wei-Nung ; Mong-Fong Horng ; Hsu, Jeng-Pong ; Kuo, Yau-Hwang
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
In this paper, we propose a QoS-enabled VPN architecture supporting a new service level agreement (SLA), called mu SLA to allow customer to specify QoS requirement. Such a QoS requirement is in terms of VPN total bandwidth and real-time micro-flow bandwidth. The proposed architecture is based on VPN hose model over DiffServ network and on logical bandwidth partitions at edge routers into various classes of micro-flow aggregations. State information of micro-flow at edge routers provides fine granularity of QoS control. A dynamic bandwidth prediction technique, normalized least mean square error (NLMS) linear predictor, is used to help the efficient resource sharing between real-time and best-effort services within each VPN. Simulation results done by network simulator 2 (NS-2) show that the proposed architecture guarantees VPN real-time micro-flows with bandwidth and quality improvement
Keywords :
DiffServ networks; Internet; least mean squares methods; quality of service; telecommunication congestion control; telecommunication network routing; virtual private networks; DiffServ network; Internet VPN; QoS control; admission control; bandwidth guarantee; dynamic bandwidth prediction technique; flow-level granularity; microflow aggregation; mu service level agreement; normalized least mean square error linear predictor; Admission control; Bandwidth; Channel allocation; Computer science; Diffserv networks; Hoses; Predictive models; Quality of service; Virtual private networks; Web and internet services;
Conference_Titel :
Advanced Communication Technology, 2005, ICACT 2005. The 7th International Conference on
Conference_Location :
Phoenix Park
DOI :
10.1109/ICACT.2005.245861
