DWDM-RAM: A data intensive grid service architecture enabled by dynamic optical networks

Abstract

Next generation applications and architectures (for example, Grids) are driving radical changes in the nature of traffic, service models, technology, and cost, creating opportunities for an advanced communications infrastructure to tackle next generation data services. To take advantage of these trends and opportunities, research communities are creating new architectures, such as the Open Grid Service Architecture (OGSA), which are being implemented in new prototype advanced infrastructures. The DWDM-RAM project, funded by DARPA, is actively addressing the challenges of next generation applications. DWDM-RAM is an architecture for data-intensive services enabled by next generation dynamic optical networks. It develops and demonstrates a novel architecture for new data communication services, within the OGSA context, that allows for managing extremely large sets of distributed data. Novel features move network services beyond notions of the network as a managed resource, for example, by including capabilities for dynamic on-demand provisioning and advance scheduling. DWDM-RAM encapsulates optical network resources (Lambdas, lightpaths) into a Grid Service and integrates their management within the Open Grid Service Architecture. Migration to emerging standards such as WS-Resource Framework (WS-RF) should be staright forward.In initial applications, DWDM-RAM targets specific data-intensive services such as rapid, massive data transfers used by large scale eScience applications, Extended abstractCommon architectures that underlie traditional data networks do not incorporate capabilities required by Grids. They are generally designed to optimize the relatively small data flow requirements of consumer services and the managed services of enterprises on a common core infrastructure oriented to the requirements of general, common communication services. Many Grid applications are data-intensive, requiring specialized services and infrastructure to manage efficiently multiple, large-scale data flows of multiple terabytes and even petabytes. Such capabilities are not effectively possible in traditional routed packet data networks. Typical Grid applications require the management of highly distributed resources within dynamic environments. Basic problems related to these requirements are common to almost all Grid environments, e.g., matching multiple, and potentially conflicting, application requirements to diverse, distributed 0-7803-8430-W04/$20,00 02004 IEEE 762

Grid services over IP Multimedia Subsystem

“…In a public interface, the host can send and receive signalling messages, while in a private interface, the host can send and receive routing messages, as well as signalling messages. This solution has been widely used, in many research projects [9] [10]. DWDM-RAM's architecture [10] is representative of this kind of network architectures, it defines two layers on the host computer, an application layer, which handles application's end-resource access request and a network service layer which performs network's resource provisioning.…”

“…This solution has been widely used, in many research projects [9] [10]. DWDM-RAM's architecture [10] is representative of this kind of network architectures, it defines two layers on the host computer, an application layer, which handles application's end-resource access request and a network service layer which performs network's resource provisioning. Dragon project [9] implements a virtual label switched router, VLSR, in a host computer that relays GMPLS control plane on non GMPLS networks, i.e., in the local area network.…”