Operate: Operation is the final test of the appropriateness of the design.Implement: The network is built or additional components are incorporated according to the design specifications, with the goal of integrating devices without disrupting the existing network or creating points of vulnerability.The design specification is the basis for the implementation activities. The network design specification is a comprehensive detailed design that meets current business and technical requirements, and incorporates specifications to support availability, reliability, security, scalability, and performance. Design: The initial requirements that were derived in the planning phase drive the activities of the network design specialists.The project plan should align with the scope, cost, and resource parameters established in the original business requirements.

A project plan is useful for helping manage the tasks, responsibilities, critical milestones, and resources required to implement changes to the network. The plan phase involves characterizing sites and assessing any existing networks and performing a gap analysis to determine whether the existing system infrastructure, sites, and the operational environment can support the proposed system. Plan: Involves identifying initial network requirements based on goals, facilities, user needs, and so on.The prepare phase can establish a financial justification for network strategy by assessing the business case for the proposed architecture. Prepare: Involves establishing the organizational requirements, developing a network strategy, and proposing a high-level conceptual architecture identifying technologies that can best support the architecture.PPDIOO is a Cisco methodology that defines the continuous life-cycle of services required for a network. PPDIOO stands for Prepare, Plan, Design, Implement, Operate, and Optimize. PPDIOO Lifecycle Approach to Network Design and Implementation

Cycle of network analysis definition