Creating a High-Level Framework
A high-level framework provides a logical structure within which you can define the major (top-level) elements of an architecture. Without a high-level framework, creating an optimal architecture design would be based more on trial-and-error than science and methodology.
Create a logical design by performing the following:
“Identify High-Level Topology” on page 66
“Identify Services Within the Topology” on page 70
“Define Service Flows” on page 86
“Define Networking Components” on page 96
Identify High-Level Topology
Start your logical design by identifying a high-level view of the topology. FIGURE 4-1 shows a generic topology for an ISP architecture. Depending upon your customer’s requirements, the topology for ...
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