bsci30s01 network design.ppt
TRANSCRIPT
7/15/2019 BSCI30S01 Network Design.ppt
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Describing Network Requirements
Network Requirements
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Cisco Enterprise Architectures
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Cisco Hierarchical Network Model
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Hierarchical Campus Model
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Hierarchical Network Model WAN
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Enterprise CompositeNetwork Model Functional Areas
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Enterprise Composite Network Model
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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)
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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
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Cisco SONA Framework Layers
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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
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Routing Protocols
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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
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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.
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