Data Network Designing and Evaluation

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Data Network Designing and Evaluation CPIT 375 Data Network Designing and Evaluation Network Architecture

Outline: What is Network Architecture ? Difference Between Architecture and Design How to develop Network Architecture ? Component Architectures Architectural Models

What is Network Architecture ? Network architecture, is the logical and structural layout of the network consisting of transmission equipment, software and communication protocols and infrastructure (wired or wireless) transmission of data and connectivity between components. It required understanding of the relationships between components of the network. The user requirements should be directly represented in the network architecture.

Difference Between Architecture and Design

Defining Network Topology There are 4 different network topologies: Star network Bus or Line network Loop or Ring network Mesh network.

Defining Types of Network LAN (Local Area Network) MAN (Metropolitan Area Network) WAN (Wide Area Network)

Component Architectures Component architecture is a description of how and where each function of a network is applied within that network. Addressing/ Routing Network Management Performance Security

Architectural Model In developing the architecture for your network there are several architectural models that you can use as a starting point: Topological models Flow-based models Functional models

Topological Model which are based on a geographical or topological arrangement and are often used as starting points in the development of the network architecture There are two popular topological models: LAN/ MAN/ WAN models Access/ Distribution/ Core models.

Topological Model LAN/ MAN/ WAN Model

Topological Model Access / Distribution / Core Model

Flow-Based Model peer-to-peer client–server Hierarchical client–server distributed computing.

Functional Model Functional architectural models focus on supporting particular functions in the network. service-provider intranet/extranet single/ multi-tiered performance end-to-end models.