Stochastic Open Pit Design with a Network Flow Algorithm ...
Network Flow Design
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Example Application of Flow Analysis 197 Predictable Flows Best-Effort Flows C BE C P R P D P Guaranteed Flows C i R i D i FIGURE 4.39 A Multi-Part Flow Specification 4.8.2 Capaci ty and Serv ice Pla nning Capacity and service plans are written descriptions of the network performance required for the flows described in the flowspec. A capacity plan describes network performance in terms of capacity only. It is used in conjunction with a one-part flowspe c. A service plan describes network performance in terms of sets of capacity, delay, and RMA. It is used in conjunction with two-part and multi-part flowspecs. Whi le a flowspec list s flows and combine s the ir per formance requirements, capacity and service plans describe what may be needed in order to support such requirements. As we see in the chapter on performance (Chapter 8), there are many mechanisms we may choose to support performance requirements in the network. 4.9 Examp le Appl ication of Flow Anal ysis We now bring the concepts of flow analysis together for an example network, in this case a network to support computing and storage management. For this network project the computing and storage devices already exist in multiple buildings on a campus. The buildings and devices that will be using this network for computing and storage management are shown in Figure 4.40. From the requirements analysis process, we have been able to determine that there are four types of flows for this network: Type 1: Flows betwe en high -perfo rmance compu ting device s . There ar e comput e servers that are the high-performance devices for this network. The first type of flow consis ts of traffi c flows between these devices. Flows are sometimes (approxi mately
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