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This paper explores tools and techniques available to business and IT leaders who seek to maintain and increase network availability through management, device feature exploitation and network design, especially during business process change. The mixed network vendor approach to diversity and redundancy is explored and brought into question as some IT leaders, pressured by lower capital budgets, seek to procure infrastructure from low cost providers as a means to make ends meet. The paper takes the position that a common network based upon mixed network supplier platforms paradoxically reduces network availability by increasing complexity and operational cost, the highest cost component in Total Cost of Ownership (TCO).
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