A fair model for autonomic bandwidth management in virtual private networks

In recent years most Internet Service Providers (ISPs) have come across one of the important problems. That is, how to manage automatic adjustment of the bandwidth in the field of Virtual Private Networks (VPNs).One solution, is a model called Autonomic Service Architecture (ASA), which can manage the bandwidth allocation for individual customers. Nevertheless, this model has two main drawbacks. One of which is an increase in the ISPs´ revenue and the other is the lack of mechanism to put burden to a non-efficient resource allocation in order to avoid the violation of terms and conditions for a negotiated Service Level Agreements´ (SLAs).Since customers intends to keep a good class of Quality of Service (QOS) for themselves, by allocating or exaggerating a high bandwidth in different stage of SLA contract session, the existing network resources could easily be wasted. In order to bypass such limitations, a model for bandwidth management is presented. The results indicated that this model is an efficient procedure for utilizing resources of network and can increase the ISPs´ profit and rates of customers´ satisfaction.