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In a Cloud service environment, besides long-term data transfers, many short-term connections may be needed to transmit management information, while no communication is needed for a long period when the providers are busy with certain services. Current routing protocols are normally designed to support long-term traffic. In topology based routing, maintaining the paths proactively or searching for an end-to-end path through flooding would be very expensive if the traffic is sporadic or short-term. Although geographic routing protocols are more scalable by making forwarding decision only based on the local topology, the use of proactive fixed-interval beaconing for location update of a node would result in location outdate and routing failure under high mobility, and create a lot of control overhead when there is no traffic.
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