What This Guide Offers. The content in this guide will help partners integrate the Cisco Lifecycle Services approach into their service practice helping to increase . Around 7 hours of free training video content. In the first session titled “Design Methodologies and Approaches” the presenters discuss PPDIOO. Clarifying PPDIOO So here is a clarification that I had posted in the past regarding the first four phases of the PPDIOO framework.
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Although design is listed as one of the six PPDIOO phases, some design elements can be present in all the other phases.
Cisco’s PPDIOO Network Cycle
The network lifecycle approach provides several key benefits aside from keeping the design process organized. The main documented reasons for applying a lifecycle approach to campus design are as follows:. The total cost of network ownership is especially important into today’s business climate.
Lower costs associated with IT expenses are being aggressively assessed by enterprise executives. Nevertheless, a proper network lifecycle approach aids in lowering costs by these actions:. Network availability has always been a top priority of enterprises.
However, network downtime can result in a loss of revenue. Examples of where downtime could cause loss of revenue is with network outages that prevent market trading during a surprise interest rate cut or the inability to process credit card transactions on black Friday, the shopping day following Thanksgiving.
The network lifecycle improves high availability of networks by these actions:. Enterprises need to react quickly to changes in the economy.
Enterprises that execute quickly gain competitive visco over other businesses. Nevertheless, the network lifecycle gains business agility by the following actions:. Accessibility to network applications and services is critical to a productive environment.
As such, the network lifecycle accelerates access to network applications and services by the following actions:.
The content of this book focuses on the prepare phase, plan phase, and design phases of the PPDIOO process as applied to building an enterprise campus network. The more detailed the implementation plan documentation is, the more likely the implementation will be a success. Although complex implementation steps usually require the designer to carry out the implementation, other staff members can complete well-documented detailed implementation steps without the direct involvement of the designer.
In practical terms, most large enterprise design engineers rarely perform the hands-on steps of deploying the new design. Instead, network operations or implementation engineers are often the persons deploying a new design based on an implementation plan. Moreover, when implementing a design, you must consider the possibility of a failure, even after a successful pilot or prototype network test.
Cisco PPDIOO lifecycle –
You need a well-defined, but simple, process test at every step ppdiok a procedure to revert to the original setup in case there is a problem. It is best-practice to lay out implementation steps in a tabular form and review those steps with your peers.
Implementation of a network design consists of several phases install hardware, configure systems, launch into production, and so on. Each phase consists of several steps, and each step should contain, but be not cksco to, the following documentation:.
Table provides an example ppvioo an implementation plan for migrating users to new campus switches. Implementations can vary significantly between enterprises. The look and feel of your actual implementation plan can vary to meet the requirements of your organization. Configures Layer 3 interfaces for IP address and routing configuration on new modules in campus backbone. Tests access layer ports on new campus switches by piloting access for a few enterprise applications.
Each step for each phase in the implementation phase is described briefly, with references to the detailed implementation plan for further details. The detailed implementation plan section should describe the precise steps necessary to complete the phase.
A detailed implementation plan describes the exact steps necessary to complete the implementation phase. It is necessary to includes steps to verify and check the work of the engineers implementing the plan.
The following list illustrates a sample network implementation plan:. Although this topic is not a technical one, the best practices highlighted will go a long way with any network design and implementation plan. Poor plans will always yield poor results. Today’s networks are too critical for business operations not to plan effectively.
As such, reviewing and utilizing the Cisco Lifecycle will increase the likelihood of any network implementation. See All Related Articles.
Sample Chapter is provided courtesy of Cisco Press. Chapter Description This chapter introduces you to the concepts of enterprise campus designs, along with an implementation process that can ensure a successful campus network deployment. Involves establishing the organizational requirements, developing a network strategy, and proposing a high-level conceptual architecture identifying technologies that can best support the architecture.
The prepare ciscoo can establish a financial justification for network strategy by assessing the business case for the proposed architecture.
Involves identifying initial network requirements based on goals, facilities, user needs, and so on. 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. A project plan is useful for helping manage the tasks, responsibilities, critical milestones, and resources required to implement changes to the network.
The project plan should align with the scope, cost, and resource parameters established in the original business requirements. The initial requirements that were derived in the planning phase drive ppddioo activities of the network design specialists.
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.
The design specification is the basis for the implementation activities. 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. Operation is the final test of the appropriateness of the design. The operational phase involves maintaining network health through day-to-day operations, including maintaining high availability and reducing expenses.
The fault detection, correction, and performance monitoring that occur in daily operations provide the initial data for the optimization phase. Involves proactive management of the network. The goal of proactive management is to identify and resolve issues before they affect the organization.
Reactive fault detection and correction troubleshooting is needed when proactive management cannot predict and mitigate failures.
In the PPDIOO process, the optimization phase can prompt a network redesign if too many network problems and errors arise, if performance does not meet expectations, or if new applications are identified to support organizational and technical requirements.
NOTE It is best-practice to lay out implementation steps in a tabular form and review those steps with your peers. Summary Next Section Previous Section. About Affiliates Cisco Systems, Inc. Installs new modules in campus backbone to support new campus switches. Interconnects new campus switches to new modules in campus backbone. Verifies that interconnects have links on respective switches.
Configures new campus switches and new modules in campus backbone. Loads standard configuration file into switches for network management, switch access, and so on. Configures Layer 3 interfaces for IP address and routing info on new campus switches. Migrate users to new campus switches.
Verifies migrated workstations can access enterprise applications.