Abstract
The introduction of Differential Service architecture has initiated interests in centralized bandwidth reservation via an oracle with each network domain defining its own oracle. The centralized bandwidth reservation mechanism requires knowledge of network topology and reservation paths in the domain to control access to premium services as well as log usage. We propose a new reactive protocol, Path and Oracle Discovery Protocol (PODP), to facilitate the management of networks with centralized bandwidth reservations. This protocol discovers the routers traversed by the network connection request and the respective domain oracle. PODP is able to respond to network path changes at minimum network overhead and storage requirements compared to other methods. A prototype router and oracle supporting the PODP has been successfully developed and tested across multiple domains.
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