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Chapter1 Introsuction to Switched Networks

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Chapter 1: Introduction
to Switched Networks

Routing and Switching

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

1

Chapter 1
1.0 Introduction
1.1 LAN Design
1.2 Switched Environment
1.3 Summary

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

2

Chapter 1: Objectives
Upon completion of this chapter, you will be able to:

 Describe convergence of data, voice, and video in the context of
switched networks.
 Describe a switched network in a small-to-medium-sized business.
 Explain the process of frame forwarding in a switched network.
 Compare a collision domain to a broadcast domain.

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

3

Converged Networks

Growing Complexity of Networks
 Our digital world is
changing.
 Information must
be accessed from
anywhere in the
world.
 Networks must be
secure, reliable,
and highly
available.

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

4

Converged Networks

Elements of a Converged Network
 Collaboration is a
requirement.
 To support collaboration,
networks employ
converged solutions.
 Data services include
voice systems, IP phones,
voice gateways, video
support, and video
conferencing.
 Call control, voice
messaging, mobility, and
automated attendant are
also common features.
Presentation_ID

© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

5

Converged Networks

Benefits of a Converged Network
 Multiple types of traffic;
only one network to
manage.
 Substantial savings over
installation and
management of
separate voice, video,
and data networks.
 Integrates IT
management.

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

6

Converged Networks

Borderless Switched Networks
 The Cisco Borderless Network is a network architecture that
allows organizations to connect anyone, anywhere, anytime,
and on any device securely, reliably, and seamlessly.
 Cisco Borderless Network is designed to address IT and
business challenges, such as supporting the converged
network and changing work patterns.

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© 2008 Cisco Systems, Inc. All rights reserved.

Cisco Confidential

7

Converged Networks

Hierarchy in the Borderless Switched
Network
Borderless
switched network
design guidelines
are built upon the
following principles:

 Hierarchical
 Modularity
 Resiliency

 Flexibility

P...
© 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID
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Chapter 1: Introduction
to Switched Networks
Routing and Switching
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