/spl mu/ service level agreement: a new bandwidth guarantee of flow-level granularity in internet VPN

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

[1]  Jean-Yves Le Boudec,et al.  An Expedited Forwarding PHB (Per-Hop Behavior) , 2002, RFC.

[2]  David L. Black,et al.  An Architecture for Differentiated Service , 1998 .

[3]  Ji Yi,et al.  Research on tunneling techniques in virtual private networks , 2000, WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420).

[4]  Matthew J. Zekauskas,et al.  A One-way Delay Metric for IPPM , 1999, RFC.

[5]  Zheng Wang,et al.  An Architecture for Differentiated Services , 1998, RFC.

[6]  Albert G. Greenberg,et al.  A flexible model for resource management in virtual private networks , 1999, SIGCOMM '99.

[7]  Marco Carugi,et al.  Service Requirements for Layer 3 Provider Provisioned Virtual Private Networks (PPVPNs) , 2005, RFC.

[8]  Philip F. Chimento,et al.  IP Packet Delay Variation Metric for IP Performance Metrics (IPPM) , 2002, RFC.

[9]  Ibrahim Khalil,et al.  Edge Provisioning and Fairness in VPN-DiffServ Networks , 2000, Proceedings Ninth International Conference on Computer Communications and Networks (Cat.No.00EX440).

[10]  Ibrahim Khalil,et al.  Edge Provisioning and Fairness in VPN-DiffServ Networks , 2004, Journal of Network and Systems Management.

[11]  David L. Black,et al.  Differentiated Services and Tunnels , 2000, RFC.

[12]  Simon Haykin,et al.  Adaptive filter theory (2nd ed.) , 1991 .

[13]  Dimitrios Makrakis,et al.  Dynamic resource allocation in QoS-enabled/MPLS supported virtual private networks and its Linux based implementation , 2002, IEEE CCECE2002. Canadian Conference on Electrical and Computer Engineering. Conference Proceedings (Cat. No.02CH37373).