BSCI30S01 Network Design.ppt

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 1/15

Describing Network Requirements

Network Requirements

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 2/15

Cisco Enterprise Architectures

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 3/15

Cisco Hierarchical Network Model

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 4/15

Hierarchical Campus Model

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 5/15

Hierarchical Network Model WAN

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 6/15

Enterprise CompositeNetwork Model Functional Areas

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 7/15

Enterprise Composite Network Model

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 8/15

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)

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 9/15

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

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 10/15

Cisco SONA Framework Layers

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 11/15

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

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 12/15

Routing Protocols

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 13/15

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 

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 14/15

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.

7/15/2019 BSCI30S01 Network Design.ppt

http://slidepdf.com/reader/full/bsci30s01-network-designppt 15/15