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Copyright © 1997 Cisco Systems, Inc.
© 1999, Cisco Systems, Inc.
www.cisco.com
WAN
Introduction
6-2CSE: Networking Fundamentals WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
A network that serves users across a broad
geographic area
Often uses transmission devices provided
by public carriers (Pacific Bell, AT&T, etc.)
This service is commonly referred to as
“plain old telephone service” (POTS)
WANs function at the lower three layers of
the OSI reference model
Physical layer, data link layer, and network
layer
What Is a WAN?
What Is a WAN?
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Indice de contenidos

Pagina 1 - Introduction

1Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comWAN Introduction6-2CSE: Networking Fundamentals — WAN Basics© 1999, Cisco

Pagina 2 - WAN Terminating Equipment

10Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comWide-Area Network RequirementsWide-Area Network Requirements© 1999, Cisc

Pagina 3 - Packet Switching

11Copyright © 1997 Cisco Systems, Inc.6-21CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comManage Bandwidth to Control

Pagina 4 - WAN Protocols

12Copyright © 1997 Cisco Systems, Inc.6-23CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.com• Adds bandwidth when neede

Pagina 5 - Transmission

13Copyright © 1997 Cisco Systems, Inc.6-25CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comDial Backup• If a primary l

Pagina 6 - POTS Using Modem Dialup

14Copyright © 1997 Cisco Systems, Inc.Routing FundamentalsRouting Fundamentals© 2000, Cisco Systems, Inc. www.cisco.com2-276-28CSE: Networking Fundame

Pagina 7 - Network (ISDN)

15Copyright © 1997 Cisco Systems, Inc.6-29CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comRouting RequirementsRouting

Pagina 8 - Frame Relay

16Copyright © 1997 Cisco Systems, Inc.6-31CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comAdministrative DistanceAdmi

Pagina 9 - Asynchronous Transfer Mode

17Copyright © 1997 Cisco Systems, Inc.6-33CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comRouting DecisionsRouting De

Pagina 10 - Requirements

18Copyright © 1997 Cisco Systems, Inc.6-35CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comIGRP Routing MetricsIGRP Ro

Pagina 11 - Dial-on-Demand Routing

19Copyright © 1997 Cisco Systems, Inc.6-37CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comDistance Vector Protocol Co

Pagina 12 - Compression

2Copyright © 1997 Cisco Systems, Inc.6-3CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comWAN DevicesWAN Switch Switche

Pagina 13 - Dial Backup

20Copyright © 1997 Cisco Systems, Inc.6-39CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comEIGRP ConvergenceEIGRP Conv

Pagina 14 - Routing

21Copyright © 1997 Cisco Systems, Inc.6-41CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comRouting TablesRouting Table

Pagina 15 - Routing Information

22Copyright © 1997 Cisco Systems, Inc.6-43CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comIssues with IP AddressingIs

Pagina 16 - © 1999, Cisco Systems, Inc

23Copyright © 1997 Cisco Systems, Inc.6-45CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comSubnetting OverviewSubnetti

Pagina 17 - RIP Routing Metrics

24Copyright © 1997 Cisco Systems, Inc.6-47CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comAddress Class UsageAddress

Pagina 18 - Routers Forward Traffic

25Copyright © 1997 Cisco Systems, Inc.6-49CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.com172.16.14.32/27172.16.14. 6

Pagina 19

26Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comCisco Router ArchitectureCisco Router Architecture6-52CSE: Networking Fu

Pagina 20 - OSPF Convergence

27Copyright © 1997 Cisco Systems, Inc.6-53CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comRouters (Operationally)Rout

Pagina 21 - IP Addressing

28Copyright © 1997 Cisco Systems, Inc.6-55CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 800 Series• ISDN IP a

Pagina 22 - IP Addressing Solutions

29Copyright © 1997 Cisco Systems, Inc.6-57CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 1600 Series• Scalable

Pagina 23 - IP Address Classes

3Copyright © 1997 Cisco Systems, Inc.6-5CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.com• Dedicated physical circuit

Pagina 24 - Virginia?

30Copyright © 1997 Cisco Systems, Inc.6-59CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 2500 Series• Fixed-co

Pagina 25 - Summarization?

31Copyright © 1997 Cisco Systems, Inc.6-61CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 2500 SeriesMission-Sp

Pagina 26 - Architecture

32Copyright © 1997 Cisco Systems, Inc.6-63CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 2600 ModulesWAN Netwo

Pagina 27 - Cisco Family of

33Copyright © 1997 Cisco Systems, Inc.6-65CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 3600 ModulesWAN Netwo

Pagina 28 - Cisco 1000 Series

34Copyright © 1997 Cisco Systems, Inc.6-67CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 4000 Series•Modular,

Pagina 29 - Cisco 1700 Series

35Copyright © 1997 Cisco Systems, Inc.6-69CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 3600 and 4000 Positio

Pagina 30 - Cisco 2500 Series

36Copyright © 1997 Cisco Systems, Inc.6-71CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 7200 Multiservice/Mul

Pagina 31 - Cisco 2600 Series

37Copyright © 1997 Cisco Systems, Inc.6-73CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comVIPs and Port AdaptersSwitc

Pagina 32 - Cisco 3600 Series

38Copyright © 1997 Cisco Systems, Inc.6-75CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 7200 and 7500 Network

Pagina 33 - AS5x00 Series

39Copyright © 1997 Cisco Systems, Inc.6-77CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco 12000 Series GSR• Car

Pagina 34 - Cisco 4500/4700 Modules

4Copyright © 1997 Cisco Systems, Inc.6-7CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.com• A logical circuit ensuring

Pagina 35 - Cisco Core Router Platforms

40Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comCisco IOS IP Network ServicesCisco IOS IP Network ServicesMulticastingMu

Pagina 36 - Cisco 7500 Series

41Copyright © 1997 Cisco Systems, Inc.6-81CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comTremendous Bandwidth Saving

Pagina 37 - VIP2 Models

42Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comCisco IOS IP Network ServicesCisco IOS IP Network ServicesVoice and Vide

Pagina 38 - Performance

43Copyright © 1997 Cisco Systems, Inc.6-85CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comGatewaysSwitches RoutersCis

Pagina 39 - Enterprise WAN Family

44Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comCisco IOS IP Network ServicesCisco IOS IP Network ServicesQuality of Ser

Pagina 40 - IP Network Services

45Copyright © 1997 Cisco Systems, Inc.6-89CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comBenefits for Enterprise Cus

Pagina 41 - Example: Audio Streaming

46Copyright © 1997 Cisco Systems, Inc.6-91CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comConsistent, Predictable Per

Pagina 42

47Copyright © 1997 Cisco Systems, Inc.6-93CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comDifferentiated IP ServicesG

Pagina 43 - Applications

48Copyright © 1997 Cisco Systems, Inc.6-95CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comSeparate “Conform” and “Exc

Pagina 44

49Copyright © 1997 Cisco Systems, Inc.6-97CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comGoldHigh PrecedenceGuarante

Pagina 45 - Traffic Is Grouped into SLAs

5Copyright © 1997 Cisco Systems, Inc.6-9CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comSDLC IBM’s SNA data link laye

Pagina 46 - Step 1: Identify Traffic and

50Copyright © 1997 Cisco Systems, Inc.6-99CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comBenefits for Enterprise Cus

Pagina 47 - IP Packet

51Copyright © 1997 Cisco Systems, Inc.© 1999, Cisco Systems, Inc.www.cisco.comCisco IOS IP Network ServicesCisco IOS IP Network ServicesSecuritySecuri

Pagina 48 - When there is

52Copyright © 1997 Cisco Systems, Inc.6-103CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comCisco’s Complete Network S

Pagina 49

6Copyright © 1997 Cisco Systems, Inc.6-11CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comTransmission Options or WAN

Pagina 50 - Benefits:

7Copyright © 1997 Cisco Systems, Inc.6-13CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comIntegrated Services Digital

Pagina 51

8Copyright © 1997 Cisco Systems, Inc.6-15CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comLeased Line• One connection

Pagina 52 - Security Solutions

9Copyright © 1997 Cisco Systems, Inc.6-17CSE: Networking Fundamentals — WAN Basics© 1999, Cisco Systems, Inc.www.cisco.comDSL“Modem”End UserDSL“Modem”

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