bsci30s01 network design.ppt

7/15/2019 BSCI30S01 Network Design.ppt

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Describing Network Requirements

Network Requirements



Cisco Enterprise Architectures



Cisco Hierarchical Network Model



Hierarchical Campus Model



Hierarchical Network Model WAN



Enterprise CompositeNetwork Model Functional Areas



Enterprise Composite Network Model



Network Traffic Mix and Requirements

• Converged network traffic mix:

– Voice and video traffic

– Voice applications traffic

– Mission-critical applications traffic

– Transactional traffic

– Routing update traffic

– Network management traffic

• Key requirements:

– Performance (bandwidth, delay, jitter)

– Security (access, transmission)



Cisco SONA Framework

• Cisco Service-Oriented Network Architecture (SONA) is anarchitectural framework.

• Cisco SONA brings several advantages to enterprises:

– Outlines how enterprises can evolve toward the Intelligent

Information Network (IIN) – Illustrates how to build integrated systems across a fully

converged intelligent network

– Improves flexibility and increases efficiency

– Optimizes applications, processes, and resources



Cisco SONA Framework Layers



Intelligent Information Network

• IIN integrates networked resources and information assets.

• IIN extends intelligence across multiple products andinfrastructure layers.

• IIN actively participates in the delivery of services and

applications.• Three phases in building an IIN are:

– Integrated transport

– Integrated services

–Integrated applications



Routing Protocols



Routing Protocol Comparison

Parameters

EIGRP OSPF IS-IS

Size of Network(Small-Medium-Large-Very Large)

Large Large Very Large

Speed of Convergence(Very High-High-Medium-Low)

Very High High High

Use of VLSM(Yes-No)

Yes Yes Yes

Mixed-Vendor Devices(Yes-No)

No Yes Yes

Network Support Staff Knowledge(Good-Poor)

Good Good Fair



Summary

• Cisco Enterprise Architectures with a hierarchical networkmodel facilitate the deployment of converged networks.

• The Cisco Enterprise Composite Network Model definesthree functional areas: Enterprise Campus, Enterprise Edge,and Service Provider Edge.

• Converged networks with their traffic mix have higher demands on the network and its resourses.

• The SONA framework guides the evolution of the enterprisenetwork toward the IIN.

• The network models can be important tools for selecting and

implementing an advanced IP routing protocol.

bsci30s01 network design.ppt

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