Network Design Steps

Phase 1 – Analyze Requirements
- Analyze business goals and constraints
- Analyze technical goals and tradeoffs
- Characterize the existing network
- Characterize network traffic

Phase 2 – Logical Network Design
- Design a network topology
- Design models for addressing and naming
- Select switching and routing protocols
- Develop network security strategies
- Develop network management strategies

Phase 3 – Physical Network Design
- Select technologies and devices for campus networks
- Select technologies and devices for enterprise networks

Phase 4 – Testing, Optimizing, and Documenting the Network Design
- Test the network design
- Optimize the network design
- Document the network design

Ref : Top-Down Network Design (Priscilla Oppenheimer)