chapter+14+network+design+and+implementation

8/6/2019 Chapter+14+Network+Design+and+Implementation

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Chapter 14

Network Design and Implementation


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Agenda

A nalysis and Design

ImplementationL A N Voice Network Design


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A nalysis and Design Phases

Request Feasibility Study

A nalysis (requirement)A lternatives (cost and benefit)

Design Selection Cost Documentation Management approval


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Implementation Phases Purchasing and vendor agreement Installation Training, and testing Conversion Follow up audit


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Request

Source User Senior managers

Communication department External environment (customer, government, etc.)

Form: formal or informal Prioritization (costs & benefits analysis) Outcome: approval, deny, or on hold by

management


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Feasibility Study

Team User, specialist, and management

Problems Technical or non-technicalA nalysis (technical, operational,economical, legal, schedule)

Report and presentation Go or stop


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A nalysis

A nalysis items Geographic requirement (scope) Traffic load analysis

Peak load (no. of message and length) National & international busy hour

Traffic flow pattern by individual location (map) Response time, reliability, & availability (cost) Terminal operators (end users & their education

background and needs) Capacity growth projection (6 months to 5 years) Constraint: time, cost, and compatibility

Documentation and reports


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Alternatives

Sources (vendors)A vailability (enchancements or new

products) Incompatibility issues Costs/services trade off


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Design Items

Configuration diagram Routing time (peak and average) Response time (peak and average) Delay consideration (queue)

Simulation What if for routing, response, and delay


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Selection Procedures Request for proposal (RFP) or request for

quotation (RFQ) Selection criteria and its weight


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Request for Proposal

Title Table of contents Description of organization Problem definition Operation requirements Format of response Evaluation criteria Decision schedule References


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Description of Organization Organization chart Organization locations Overview of system


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Problem Definition Error rate Misrouting Time consuming Security


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Operation Requirements

Reliability Down time

Misrouting Lost message Transmission error

Performance Throughput Response time Error rate


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Format of Response - I

Title Table of contents Overview Software (function & feature) Hardware (function, feature, & capacity) Performance (future growth) Site requirement Conversion (installation, testing, &

schedule)


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Format of Response - II Maintenance (support) Costs Warranty Coverage User Training References Other related information


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Selection criteria Proposed solution Compatibility Security and backup Price Technical support Product maintenance Repair service Financial viability


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Vendor Response to RFP - I Introduction Executive summary Table of contents System design System feature Growth capacity Installation and testing methods Maintenance arrangements Ongoing support Installation schedule Pricing and timing of payments Warranty coverage Training and education Other Recommendation


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Documentation Diagrams and maps Configuration and wiring

Components list Hardware: model and specification Software: version, release, no. of copies

Implementation plan (Gantt chart) Milestones A ctivities Schedule


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ManagementA

pproval Review and verification

Users Operators

Management: budget


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Purchasing

Vendor agreement Equipment configuration specification A cceptance test

Schedule: delivery, installation, testing,operation

Location: delivery, installation, testing,operation

Other terms and conditions: payment, warranty,maintenance

Get a experienced lawyer


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Training

Types of instruction Classroom Hand on

In house Outside

Educating Users Operators Maintenance crew

Security and backup


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Testing

Testing time Testing Tools

Software & hardware IBMs Telecommunication Network Simulator

Testing areas Performance Stress testing (load) Error handling Error recovery procedures


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Conversion Types

Parallel

Cut over Pilot Piece by piece

Help desk Vendor technicians or consultants Implementation problems cleanup


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Audit

A fter six months Check performance or success criteria Formal report to management for proper

actions


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LA

N Design Number of nodes Usage Traffic: day and time Disk storage Speed Security and backup Compatibility Management


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Voice Network Design Peak load and average load Grade of service Capacity & usage of circuits Overdesigning or planned delay


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Points to Remember

A nalysis and Design Implementation

L A N Voice Network Design


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Discussion Develop a simple request for proposal to

add e-business to a traditional departmentstore.

chapter+14+network+design+and+implementation

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