© 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE I Chapter 6 1

Introducing Routing and Switching in the Enterprise – Chapter 1

Networking in the Enterprise

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Objectives Describe the logical architecture and components of

an enterprise network

Explain the types of applications and traffic flows present on an enterprise network

Examine how enterprises integrate remote workers into their networks – Define the role and importance of a telecommuter

– Describe the function and importance of VPNs

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Describe an Enterprise Network A large business environment with many users and

locations

Supported by an enterprise network

Provides mission-critical services and applications

Requires centralized control: NOC

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Describe an Enterprise Network Network infrastructure

99.999% uptime

High-end equipment

Fail-over capabilities

Redundancy

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Hierarchical design

Access, Distribution, Core layers

Enterprise networks contain both LAN and WAN technologies

Describe an Enterprise Network

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Describe an Enterprise NetworkIntranet

Provide access to local and remote employees

Private network

Controlled by firewalls

Extranet

Privileged access for business partners

Private network

Controlled access

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Explain Types of Applications and Traffic Flows within an Enterprise Network Local

WAN

External

Optimized bandwidth

Security

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Explain Types of Applications and Traffic Flows within an Enterprise Network Characteristics of different types of network traffic

Network traffic prioritizationClassification

Pre-queuing

Queuing and scheduling

Post-queuing

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Factors affecting enterprise traffic

Latency

Jitter

Quality of Service (QoS)

Explain Types of Applications and Traffic Flows within an Enterprise Network

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Examine How Enterprises Integrate Remote Workers into their Networks Teleworking

Telecommuting

Teleconferencing

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Examine How Enterprises Integrate Remote Workers into their Networks Describe remote worker applications

VoIP

Sharing applications

FTP and Telnet

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Examine How Enterprises Integrate Remote Workers into their Networks Function and importance of VPNs

Encryption of traffic

Tunnels

Client/server application

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Summary Enterprise networks support mission critical services

and traffic

Enterprise design includes a campus, enterprise edge, and service provider edge

Intranets and extranets are private networks designed for specific access privileges

VPNs create encrypted tunnels for use by teleworkers

© 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicITE 1 Chapter 6 14