Designing ISP Architectures

Creating a High-Level Network Design

Although there are many methods for creating a network design and addressing capacity planning, we suggest that you approach the process by creating a physical network design, then planning capacity for software and hardware.

We recommend the following overall process for creating a physical network design:

1.	Start with a generic high-level network design that includes as many tiers or layers as needed. Identify all major network components within the infrastructure. We recommend that you create a diagram of your network design to document all components during this process.
2.	Plan the capacity required for software and hardware.
3.	For each tier or layer, determine the network components required, such ...