Networking in the Enterprise Introducing Routing and Switching

Objectives § Describe the logical architecture and components of an enterprise network § Explain

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

Describe an Enterprise Network § Network infrastructure § 99. 999% uptime § High-end equipment

Describe an Enterprise Network § Hierarchical design § Access, Distribution, Core layers § Enterprise

Describe an Enterprise Network Intranet Extranet § Provide access to local and remote employees

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

Explain Types of Applications and Traffic Flows within an Enterprise Network § Characteristics of

Explain Types of Applications and Traffic Flows within an Enterprise Network § Factors affecting

Examine How Enterprises Integrate Remote Workers into their Networks § Teleworking § Telecommuting §

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

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

Summary § Enterprise networks support mission critical services and traffic § Enterprise design includes

© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 14

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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 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2

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 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 3

Describe an Enterprise Network § Hierarchical design § Access, Distribution, Core layers § Enterprise networks contain both LAN and WAN technologies © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 5

Describe an Enterprise Network Intranet Extranet § Provide access to local and remote employees § Privileged access for business partners § Private network § Controlled by firewalls § Controlled access © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6

Explain Types of Applications and Traffic Flows within an Enterprise Network § Characteristics of different types of network traffic § Network traffic prioritization Classification Pre-queuing Queuing and scheduling Post-queuing © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 8

Explain Types of Applications and Traffic Flows within an Enterprise Network § Factors affecting enterprise traffic § Latency § Jitter § Quality of Service (Qo. S) © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 9

Examine How Enterprises Integrate Remote Workers into their Networks § Describe remote worker applications § Vo. IP § Sharing applications § FTP and Telnet © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11

Examine How Enterprises Integrate Remote Workers into their Networks § Function and importance of VPNs § Encryption of traffic § Tunnels § Client/server application © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 12

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 Public 13