The network service plane: An approach for inter-domain network reservations
Abstract
In the "Grid" vision, demanding applications are dynamically assigned to supercomputers whose resources in terms of available CPU power and storage capacity ("grid resources") allow them to process the given jobs. However, distributed applications may also be demanding in terms of the minimum bandwidth and maximum end-to-end delay ("network resources") available for the Communication between its instances. This has lead to the development of several Network Resource Provisioning Systems (NRPSs), each offering certain possibilities to reserve bandwidth between network endpoints in a single administrative domain. To offer a greater variety of services to users and to facilitate cooperation among users of different domains, it seems natural to establish dedicated inter-domain links to extend the possibilities given by NRPSs to multiple domains. Unfortunately, it is not viable to place several domains under the control of any single NRPS to allow for inter-domain bandwidth reservations, since these systems generally require full network topology knowledge and administrative rights in each domain. Furthermore, each system was developed with a specific focus and therefore best fulfils the requirements of the users within certain domains. When considering possible approaches to enable inter-domain bandwidth reservations, it is important to have in mind the separation between "resource management", which lies within the autonomy of each domain and whose details are hidden to the Outside, and the interoperability between the domains. This extended abstract will describe the design decisions taken to solve the exposed problems within the Phosphorus project.
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