List the main phases of a typical network management life cycle and provide examples of tasks that occur at each level and at what level switching services and network traffic for the purpose of an upgrade belong.
The NLC (Network Management Life Cycle) defines a range of needs that require a variety of methodologies and tools for network performance management through Monitoring, Measurement, Assessment and Diagnosis (MMAD). Each phase of the NLC has its own requirements that can typically be met with a judicious selection of tools and assessment solutions.
The major phases are:
Each phase of the typical Network Life Cycle requires some degree of attention to MMAD. In fact, the degree to which each phase is properly carried out defines the likelihood of success of subsequent phases.
To illustrate the importance of each phase of the Cycle, consider that some networks are constructed with little or no Staging phase -- the Deployment phase from one service to another is made "over the weekend" with fingers crossed. The success of the deployment is dependent on a particularly large expenditure in the Planning phase -- and the risk for lack of a thorough Staging effort is assumed by Deployment and even Operation. This may be reasonable since the cost of a Staging phase can be considerable, both in terms of money and time expended.
Let's look more closely at the details of each phase of the NLC to identify the tasks involved:
Business Case
Requirements
Request for Proposals
Planning
Staging
Deployment
Operation
Review
List the main phases of a typical network management life cycle and provide examples of tasks...
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