Chapter 1 Introduction.pptx - INTRODUCTION CPIT375 Data Network Design and Evaluation Outlines Overview of Analysis Architecture and Design Processes

Chapter 1 Introduction.pptx - INTRODUCTION CPIT375 Data...

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INTRODUCTION CPIT375: Data Network Design and Evaluation
Outlines Overview of Analysis, Architecture, and Design Processes System approach applied to network Compare the traditional and new view of networks Service description offered by the network Performance characteristics of these services 2
Data networks A data network is a system that transfers data between network access points (nodes) t hrough data switching , system control and interconnection transmission lines. Data networks are primarily designed to transfer data from one point to one or more points (multipoint). 3
Flow information processes Three interconnected processes The output of one process is used directly as input to the next Analysis: lean what the user, applications, devices, need from the network Analysis Architecture Design Requirements Flows Security risks Technology and topology choices Relationships among network functions Equipments Vendor choices Location information Process 1 Process 3 Process 2 4
Process 1: Network analysis Determine the network behavior under various situations. Examine the existing network and his behavior under different situations. Develop sets of problem statements and objectives that describe the desired network Specify users, their applications and devices requirements: what they need from network Determine relationships between users, applications, devices and networks Network analysis helps us understand what problems we are trying to solve, and in collect information that will be used in developing the architecture and design. 5
Inputs, outputs of Network analysis process To schematize the analysis process Network Analysis State of existing network Problems with existing network and system Requirements from users, applications, devices Descriptions of problem statements for network Descriptions of requirements for network Descriptions of traffic flows Map (location) of applications and devices to network Descriptions of INPUTS OUTPUT S 6
Process 2: Network Architecture Uses informations from the analysis process to develop high-level structure for network Make technology and topology choices for network. Determine the sets of equipment needed Determine relationship between functions of network: addressing/routing, performance and security in order to gives the optimized architecture 7
Inputs, Outputs Of Network Architecture Process Network Architecture Descriptions of problem statements for network Descriptions of requirements for network Descriptions of traffic flows Mappings of applications and devices to network Descriptions of potential risks INPUTS OUTPUTS Technology choices for network Topology choices for network Relationships between network functions Equipment classes 8
Process 3: Network design It is the goal of our work The culmination of analysis and architecture processes Gives physical detail to the architecture: Drawings of the network; Selections of vendors and service providers; Selections of equipment including equipment types and configurations.

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