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CCNA Discovery 3 - Chapter 1
- 1. Networking in the
Enterprise
Introducing Routing and Switching in the Enterprise –
Chapter 1
Version 4.0 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1
- 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 2
- 3. 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
- 4. Describe an Enterprise Network
Network infrastructure
99.999% uptime
High-end equipment
Fail-over capabilities
Redundancy
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 4
- 5. 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
- 6. Describe an Enterprise Network
Intranet Extranet
Provide access to local and Privileged access for business
remote employees partners
Private network Private network
Controlled by firewalls Controlled access
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6
- 7. Explain Types of Applications and Traffic
Flows within an Enterprise Network
Local
WAN
External
Optimized bandwidth
Security
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 7
- 8. 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
- 9. Explain Types of Applications and Traffic
Flows within an Enterprise Network
Factors affecting enterprise traffic
Latency
Jitter
Quality of Service (QoS)
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 9
- 10. Examine How Enterprises Integrate Remote
Workers into their Networks
Teleworking
Telecommuting
Teleconferencing
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 10
- 11. Examine How Enterprises Integrate Remote
Workers into their Networks
Describe remote worker applications
VoIP
Sharing applications
FTP and Telnet
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11
- 12. 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
- 13. 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
- 14. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 14