Policy-based information model for adaptive WFQ routers

There has been proposed the adaptive resource sharing model for the DiffServ architecture, which is based on the WFQ service policy [4]. This model has parameters that affect the way customers are served and the QoS requirements are provided. Since the proposed model is to be implemented within a switching equipment the problem of its efficient configuring arises. On the one hand, it is possible to use well proven technologies such as Simple Network Management Protocol (SNMP). But if a network installation contains a lot of nodes then an administrator has to configure each device independently. Thus, it is apparent that other approaches are necessary. So, it is proposed to use the policy-based network management, which has been proposed and jointly developed by the DMTF and IETF [1, 2]. Several extensions are currently being developed that cover such areas as QoS. The QoS Policy Information Model (QIM) [3] establishes a standard framework and constructs for specifying and representing policies that administer, manage, and control access to network QoS resources. Thus, the introduction of the policybased management technologies can significantly ease the configuration of adaptive WFQ routers in the network.