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© 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Introducing Routing and Switching in the Enterprise – Chapter 1 Networking in the Enterprise
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1
Introducing Routing and Switching in the Enterprise – Chapter 1
Networking in the Enterprise
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
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 3
Enterprise Network A large business environment with many users and locations
• Manufacturers
• Large retail stores
• Restaurant and service franchises
• Utilities and government agencies
• Hospitals
• School systems
Supported by an enterprise networkSupport for critical applications
Support for converged network traffic
Need for centralized control
Support for diverse business requirements
Provides mission-critical services and applications
Requires centralized control: NOC
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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 Public 15
