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10 Cards in this Set
- Front
- Back
Reducing Capacity
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- Traffic Shaping (Filtering, Capacity Percentages)
- Compression |
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traffic shaping
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filtering out or limiting undesirable incoming traffic can also substantially reduce overall network costs.
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filtering
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getting rid of unwanted traffic at access switches (things that have no business at a corporate network like MP3 sharing)
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capacity percentages
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can shape traffic by assigning _______ to certain applications arriving at access switches
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compression
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exploits redundancy in data to recode data into fewer bits; traffic must be decompressed on other side; can help if traffic chronically exceeds the capacity on a line
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problems w/ compression
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- slows down process
- can lose data - must have compatible compression equipment at the two ends of the line |
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What-If Analysis
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◦ Try alternative designs to close performance
gaps. ◦ Select the optimum design in terms of performance and cost. ◦ Trying many designs will probably result in the selection of a very good design. ◦ Far cheaper than changing around the real network. |
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minimum requirements (is this really a good option?)
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◦ Specifications that set particular requirements
must be met; noncompliant products that do not meet these cannot be considered further. - not always? since it's not the best |
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SDLC cost
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Hardware: full price—base price plus necessary
optional components ◦ Software: full price—base price plus necessary optional modules ◦ Labor costs: Network staff and user costs during development ◦ Outsourced development cost ◦ Total development cost |
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SLC cost
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◦ Development cost plus ongoing cost, which
usually is much larger than development cost ◦ Measured as the total cost of ownership (TCO) All costs over a system’s total life ◦ Ongoing costs include carrier costs Carrier pricing is complex and difficult to analyze ◦ Often locked in by multi-year leases |