Management and Realization of SLA for Providing Network QoS

We consider an SLA (Service Level Agreement) committed between two parties to use the guarantee of QoS provided by a QoS Enabled Network (QEN). QEN can provide guarantee of QoS because a Bandwidth Broker (BB) manages its resources based on a policy. The IETF and the DMTF have done extensive work in this field and have proposed a policy framework in order to store and manage policy and the standardization process is still going on. However, not much work has been done in the field of realization and management of SLA, which is necessary in order to utilize QoS provided by the network layer as perceived by the service layer. In this paper, we propose a new methodology of SLO templates (machine readable description of human readable textual SLA) to negotiate and commit SLA to utilize QoS provided by networks as perceived by businesses like that of a virtual leased line service. We also describe the implementation of our proposed SLO templates in our BB.