ccna 4 v3.0 module 3 ppp
DESCRIPTION
CCNA 4 v3.0 Module 3 PPP. Purpose of This PowerPoint. This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.0. It was created to give instructors a PowerPoint to take and modify as their own. This PowerPoint is: - PowerPoint PPT PresentationTRANSCRIPT
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1© 2003, Cisco Systems, Inc. All rights reserved.
CCNA 4 v3.0 Module 3 PPP
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222© 2003, Cisco Systems, Inc. All rights reserved.
Purpose of This PowerPoint
• This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.0.
• It was created to give instructors a PowerPoint to take and modify as their own.
• This PowerPoint is:NOT a study guide for the module final assessment.NOT a study guide for the CCNA certification exam.
• Please report any mistakes you find in this PowerPoint by using the Academy Connection Help link.
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333© 2003, Cisco Systems, Inc. All rights reserved.
To Locate Instructional Resource Materials on Academy Connection:
• Go to the Community FTP Center to locate materials created by the instructor community
• Go to the Tools section• Go to the Alpha Preview section• Go to the Community link under Resources• See the resources available on the Class home page for
classes you are offering• Search http://www.cisco.com • Contact your parent academy!
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444© 2003, Cisco Systems, Inc. All rights reserved.
Objectives
• Serial point-to-point links• PPP authentication• Configuring PPP
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555© 2003, Cisco Systems, Inc. All rights reserved.
Introduction to Serial Communication
Some of the many serial communications standards include the following:
RS-232-E V.35 High-Speed Serial Interface (HSSI)
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Time-Division Multiplexing
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Demarcation Point
The point in the network where the responsibility of the service provider or "telco" ends.
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DTE-DCE
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Serial Connection Options
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HDLC Encapsulation
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Configuring HDLC Encapsulation
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121212© 2003, Cisco Systems, Inc. All rights reserved.
Troubleshooting a Serial Interface
• Five possible problem states can be identified in the interface status line of the show interface serial display: Serial x is down, line protocol is down. Serial x is up, line protocol is down. Serial x is up, line protocol is up (looped). Serial x is up, line protocol is down
(disabled). Serial x is administratively down, line
protocol is down.
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131313© 2003, Cisco Systems, Inc. All rights reserved.
PPP Layered Architecture
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141414© 2003, Cisco Systems, Inc. All rights reserved.
PPP and the Data Link Layer
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151515© 2003, Cisco Systems, Inc. All rights reserved.
PPP and the Network Layer
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161616© 2003, Cisco Systems, Inc. All rights reserved.
Establishing a PPP Session
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171717© 2003, Cisco Systems, Inc. All rights reserved.
PPP Operation
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181818© 2003, Cisco Systems, Inc. All rights reserved.
LCP Options
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PPP Configuration Options
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202020© 2003, Cisco Systems, Inc. All rights reserved.
NCP
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PPP Authentication Protocols
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PPP Authentication
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Password Authentication Protocol (PAP)
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242424© 2003, Cisco Systems, Inc. All rights reserved.
Challenge Handshake Authentication Protocol (CHAP)
CHAP provides protection against playback attack through the use of a variable challenge value that is unique and unpredictable.
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252525© 2003, Cisco Systems, Inc. All rights reserved.
PPP Encapsulation and Authentication Process
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262626© 2003, Cisco Systems, Inc. All rights reserved.
CHAP Authentication Process
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272727© 2003, Cisco Systems, Inc. All rights reserved.
Configuring PPP
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282828© 2003, Cisco Systems, Inc. All rights reserved.
Configuring PPP Authentication
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292929© 2003, Cisco Systems, Inc. All rights reserved.
PAP Configuration
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303030© 2003, Cisco Systems, Inc. All rights reserved.
CHAP Configuration
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313131© 2003, Cisco Systems, Inc. All rights reserved.
Verifying PPP
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PPP Configuration Commands
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333333© 2003, Cisco Systems, Inc. All rights reserved.
Debug PPP Authentication