Incremental QoS Deployment based on Network Brokers

Currently there is intensive research work attempting to obtain QoS provision on the Internet. Although existing proposals for the provision of QoS guarantees on Internet differ significantly, they share in most cases a common characteristic, that is, that all routers on the network are modified, thus allowing end-to-end QoS provision. Nevertheless, with this generalized requirement it is safe to say that QoS provision on the Internet can only become a reality in the long term. Therefore, taking this into account in this work we propose an alternative based on DiffServ in which it is only necessary to incorporate QoS provision mechanisms in a subset of routers within the network. In a more specific way, our model guarantees QoS provision whenever an operative path exists in which all intermediate routers incorporate certain mechanisms. In our proposal we locate an agent responsible for access control in each routing domain an agent responsible of access control and thus the management of the parameters related to QoS provision in each router within the network