This project was a collaboration with NEC Europe Ltd over three years. In its first part the project focused on the implementation of Differentiated Services for Linux Routers in both, Ethernet and ATM networks. The implementation has been tested by various other external organizations, among them a few European telecommunication service providers. The second part of the project during focused on the development of a management software for networks providing QoS for (mobile) users. We have designed and implemented a QoS management API that enables an application programmer to develop QoS management software for heterogeneous networks and various topologies. A generic implementation of this API provides a framework that can support heterogeneous router hardware. As a first application an interface for addressing the Linux router previously developed in this project has been implemented. A generic bandwidth broker to assist a network administrator or a user in configuring a large network to provide QoS for specific flows has been designed and implemented using the API and the Linux DiffServ Router implementation. This broker has successfully been tested in the experimental RVS experimentation network and in the research lab of NEC in Heidelberg, Germany. A mobile client software has been implemented that allows a user to register one or several flows at the bandwidth broker which in turn performs the necessary reservations at the routers. After the mobile client roams to a new access network the previous reservations can be changed to support the traffic from the new location. Those changes can be automatically performed by the bandwidth broker after the new location has been notified.
| Title: | Differentiated Services over ATM |
| Research Staff: | Günter Schattenberger |
| Homepage: | Project Information |