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Building Cisco Remote Access Networks

Book

  • Sorry, this book is no longer in print.
Not for Sale

Foundation learning for Remote Access exam #640-605

  • Description
  • Sample Content
  • Updates
  • Copyright 1999
  • Edition: 1st
  • Book
  • ISBN-10: 1-57870-091-4
  • ISBN-13: 978-1-57870-091-2

Cisco authorized self-study book for CCNP Remote Access foundation learning

  • Prepare for CCNP certification while learning the fundamentals of remote access networks
  • Apply Cisco solutions for assembling and cabling WAN components
  • Enable on-demand connections by configuring asynchronous connections with modems and configuring Point-to-Point Protocol
  • Enhance on-demand connectivity using ISDN and DDR technologies
  • Learn how to manage permanent connections with X.25, Frame Relay, backups, queuing, and compression

Building Cisco Remote Access Networks is a Cisco authorized self-paced learning tool. It teaches you how to design, configure, and maintain a remote access network using Cisco products. This book helps you enable and enhance the on-demand connectivity of a small office, home office, or telecommuter site to a central site. It is divided into six main areas: introduction to remote access networks, identifying Cisco solutions to remote access needs, enabling on-demand connections to the Central site, enhancing on-demand connectivity, enabling permanent connections to the Central site, and scaling remote access networks.

Building Cisco Remote Access Networks offers detailed and concise solutions for working with remote access networks. Configuration examples demonstrate management and troubleshooting techniques. Step-by-step configuration and troubleshooting lists walk you though remote access network set-up and management. In-depth discussions teach you how to maintain and scale a remote access network. Finally, chapter-ending questions help you assess your understanding of key concepts and start you down the path for attaining your CCNP certification.

Building Cisco Remote Access Networks is part of a recommended learning path from Cisco Systems that can include simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining.

Table of Contents

(NOTE: Each chapter includes a Summary and Review Questions.)

1. Introduction.

Part I: Introduction to Remote Access Networks. Part II: Identifying Cisco Solutions to Remote Access Needs. Part III: Enabling On-Demand Connections to the Central Site. Part IV: Enhancing On-Demand Connectivity. Part V: Enabling Permanent Connections to the Central Site. Part VI: Scaling Remote Access Networks. Appendixes. Case Studies and Review Questions. Who Should Read this Book? Conventions Used in This Book. Illustration Iconography. Command Syntax Conventions. Author's Notes, Key Concepts, Notes, and Warnings.



2. Selecting Cisco Products for Remote Connections.

Remote Access Overview. Defining WAN Connection Types.

Dedicated Connections. Circuit-Switched Connections. Packet-Switched Connections.

Defining WAN Encapsulation Protocols.

PPP Encapsulation. X.25 and Frame Encapsulations.

Determining the WAN Type to Use. Selecting WAN Configuration Types.

WAN Connections—Speed Comparison. WAN Connections Summary.

Identifying Site Requirements.

Central Site Considerations. Branch Office Considerations. Telecommuter Site Considerations.

Selecting Cisco Remote Access Solutions.

Determining the Appropriate Interfaces—Fixed Interfaces. Determining the Appropriate Interfaces—Modular Interfaces.

Selecting Products with Cisco Product-Selection Tools.

Product Selection Tool Example.



3. Assembling and Cabling the WAN Components.

Network Overview. Identifying Company Site Equipment.

Central Site Router Equipment. Branch Office Router Equipment. Telecommuter Site Router Equipment.

Assembling and Cabling the Network. Verifying Network Installation.

Verifying Central Site Installation. Verifying Branch Office Installation. Verifying Telecommuter Site Installation.



4. Configuring Asynchronous Connections with Modems.

Modem Overview. Modem Signaling and Cabling.

Data Transfer Group. Flow Control Group. Modem Control Group. Communication Termination. Modem Operation. Communication Wiring and Cabling.

Modem Modulation Standards. Error Control and Data Compression. Configuration for Asynchronous Connections.

EXEC Connection Commands. Line Types and Numbering.

Router Configuration.

Interface Async and Line Configuration.

Basic Async Configuration—Router Preparation. Basic Async Configuration—Modem Preparation.

Manual Configuration of Modems. Automatic Configuration of Modems. Chat-Scripts for Async Lines.

Verifying and Debugging Modem Autoconfiguration. Troubleshooting Modem Autoconfiguration. Case Study 4-1—Configuring Asynchronous Connections with Modems.

Scenario. Task 1—Setting Up the Initial Configuration of the Central Site Router. Task 2—Configuring the Serial Interface and Line. Task 3—Configuring the Central Site Modem. Task 4—Configuring the PC Modem and Connecting to Central Site. Task 5—Simplifying Router Modem Configuration with Autoconfigure.

Solution to Case Study 4-1—Configuring Asynchronous Connections with Modems.

Task 1 Solution—Setting Up the Initial Configuration of the Central Site Router. Task 2 Solution—Configuring the Serial Interface and Line. Task 3 Solution—Configuring the Central Site Modem. Task 4 Solution—Configuring the PC Modem. Task 5 Solution—Simplifying Router Modem Configuration with Autoconfigure. Case Study Conclusion.

Case Study 4-2—Configuring Remote WAN Routers.

Scenario.

Solution to Case Study 4-2—Configuring Remote WAN Routers.

Solution Summary.



5. Configuring Point-to-Point Protocol and Controlling Network Access.

PPP Overview. PPP Architecture.

PPP Mechanisms. PPP Functional Components. Related RFCs.

Configuring Cisco Access Servers.

Enabling PPP. Configuring Dedicated or Interactive PPP (and SLIP) Sessions. Configuring the Interface Addressing Method for Local Devices. Configuring the Interface-Addressing Method for Remote Devices.

PPP Link Control Protocol Options. PAP and CHAP Authentication.

Configuring PAP Authentication. Configuring CHAP Authentication.

PPP Callback.

Callback: How Does It Work? Configuring Async Callback.

PPP Compression.

Configuring Compression.

PPP Multilink.

Multilink Operation and Configuration.

Verifying and Troubleshooting PPP. Case Study—Configuring PPP and Controlling Network Access with CHAP.

Scenario. Task 1—Configuring PPP on Your Central Site Router. Task 2—Configuring Your Central Site Router to Accept Telnet Connections. Task 3—Verifying Your PPP Configuration.

Solution to Case Study—Configuring PPP and Controlling Network Access with CHAP.

Task 1 Solution—Configuring PPP on Your Central Site Router. Task 2 Solution—Configuring Your Central Site Router to Accept Telnet Connections. Task 3 Solution—Verifying Your PPP Configuration. Case Study Conclusion.

Supplement 5-1—IP Address Negotiations. Supplement 5-2—Authentication Process with Windows 95 and Cisco Routers.



6. Accessing the Central Site with Windows 95.

Windows 95 Dial-Up Networking Overview.

The Basics. The Issues. LAN Connection Protocols.

Configuring a Windows 95 Dial-Up Connection. Configuring a Windows 95 Dial-Up Client. Verifying a Windows 95 Dial-Up Connection. Configuring a Windows 95 Dial-Up Connection Using ISDN and DDR to Enhance Remote Connectivity.

Scenario. Task 1—Setting Up Windows 95 with Your Network and Dialing. Task 2—Setting Dial-Up Connection Properties. Task 3—Making the Connection.

Solution to Case Study—Configuring a Windows 95.

Dial-Up Connection. Task 1 Solution—Setting Up Windows 95 with Your Network and Dialing. Task 2 Solution—Setting Dial-Up Connection Properties. Task 3 Solution—Making the Connection.



7. Using ISDN and DDR Technologies to Enhance Remote Connectivity.

ISDN Overview.

ISDN versus Asynchronous. SDN Services and Channelized E1 and T1. BRI Call Processing. BRI Functional Groups and Reference Points. PRI—Reference Points.

ISDN Protocol Layers.

ISDN Layer 1. ISDN Layer 2. ISDN Layer 3—Channel Q.931. ISDN Call Setup. ISDN Call Teardown.

ISDN BRI and DDR Overview. Configuring an ISDN BRI.

Step 1—Selecting the ISDN Switch Type. Step 2—Configuring the Interface. Step 3—Setting the Service Profile Identifiers (SPID), If Necessary. Step 4—Setting the Encapsulation Protocol.

Configuring Dial-on-Demand Routing (DDR).

Step 1—Defining what Constitutes Interesting Traffic. Step 2—Assigning the Dialer-List to an Interface. Step 3—Defining Destination Parameters. Step 4—Defining Optional Call Parameters.

Static and Default Routing.

Static Route. Default Route.

Setting Route Redistribution.

Deactivating Routing Updates.

Configuring a Router for Initiating an ISDN Call.

Using an Extended Access-List to Define a Dialer-List.

Optional Configurations.

B Channel Aggregation. ISDN Caller Identification. Called-Party Number Answering. ISDN Rate Adaptation.

Monitoring the ISDN Interface.

The show interface bri Command. The show isdn status Command. Verifying PPP Multilink. Troubleshooting Multilink PPP. ISDN debug Commands.

ISDN Primary Rate Interface.

Selecting the PRI switch. Selecting the ISDN PRI Controller for Configuration. Configuring the Framing, Linecoding, and Clocking of the Controller. Additional ISDN PRI Configuration Parameters. PRI Configuration Example.

Case Study—Using ISDN and DDR to Enhance Remote Connectivity.

Scenario. Task 1—Configuring ISDN BRI On Your Branch Office Router. Task 2—Configuring ISDN PRI on Your Central Site Router. Task 3—Verifying the ISDN Connection.

Solution to Case Study—Using ISDN and DDR to Enhance Remote Connectivity.

Task 1 Solution—Configuring ISDN BRI on your Branch Office Router. Task 2 Solution—Configuring ISDN PRI on Your Central Site Router. Task 3 Solution—Verifying the ISDN Connection. Case Study Conclusion.



8. Optimizing the Use of DDR Interface—Dialer Profiles and Rotary Groups.

Dialer Rotary Overview.

Creating and Configuring a Rotary Group. Configuring the Interface Dialer.

Dealing with Dialer Timers. Dialer Profile Overview.

Components of Dialer Profile. Example of Dialer Profile Configuration.

Verifying a Dialer Profile Configuration. Case Study—Using Dialer Profiles to Enhance DDR.

Scenario. Task.

Solution to Case Study—Using Dialer Profiles to Enhance DDR.

Case Study Conclusion.



9. Configuring a Cisco 700 Series Router.

Cisco 700 Series Overview. Cisco 700 Series Features.

Networking Features. Routing and WAN Features. ISDN and Telephony Features.

Cisco IOS-700 Release 4.x—Summary of Features. Profile Overview. Cisco 700 User Interface. Configuring the Cisco 700 Series.

System Level Configuration. LAN Profile Configuration. User Profile Configuration. Cisco 700—Configuration Example.

Additional Interface Configuration.

Caller ID. PPP Callback—No Authorization. PPP Callback—Receive Number Authorization.

Cisco 700 and Cisco IOS Configuration Examples. IP Traffic with CHAP Authentication between a Cisco 700 and an IOS-Based Router. IP Traffic with PAP Authentication between Two Cisco 700s. IPX Traffic with CHAP Authentication between a Cisco 700 and an IOS-based Router. Authentication Quick Reference Guide. Monitoring IP Routing. Cisco 700 Series and DHCP.

Cisco 700—DHCP Functionality. Case Study—Configuring a Cisco 700 Series Router. Scenario. Task 1—Resetting the Cisco 700 to Default Settings. Task 2—Configuring the Cisco 700 to Communicate with the Central Site Router. Task 3—Configuring the Cisco 3640 to Communicate with the Cisco 700. Task 4—Placing a Manual ISDN Call from the Cisco 700. Task 5—Configuring the Cisco 700 to Receive Incoming Calls from the Central Site.

Solution to Case Study—Configuring a Cisco 700 Series Router.

Task 1 Solution—Resetting the Cisco 700 to Default Settings. Task 2 Solution—Configuring the Cisco 700 to Communicate with the Central Site Router. Task 3 Solution—Configuring the Cisco 3640 to Communicate with the Cisco 700. Task 4 Solution—Placing a Manual ISDN Call from the Cisco 700. Task 5 Solution—Configuring the Cisco 700 to Receive Incoming Calls from the Central Site. Case Study Conclusion.



10. Using X.25 for Remote Access.

X.25 Overview.

X.25 Protocol Stack. X.25 DTE and DCE. The Packet Assembler/Deassembler (PAD). X.121—The X.25 Addressing Standard. X.25 Encapsulation.

X.25 Virtual Circuits.

Single Protocol Virtual Circuits. Multiprotocol Virtual Circuits.

Configuring X.25.

Configuring the X.121 Address. Configuring X.25 SVCs. Configuring X.25 PVCs.

Additional X.25 Configuration Tasks.

Configuring X.25 VC Ranges. Configuring X.25 Packet Sizes. Configuring Window Parameters. Additional X.25 Configuration Options Example.

Verifying X.25 Configuration.

Case Study—Using X.25 for Remote Access Scenario. Task 1—Configuring X.25 at the Central Site. Task 2—Configuring X.25 at the Branch Office. Solution to Case Study—Using X.25 for Remote Access. Task 1 Solution—Configuring X.25 at the Central Site. Task 2 Solution—Configuring X.25 at the Branch Office.



11. Frame Relay Connection and Traffic Flow Control.

Frame Relay Overview.

Frame Relay Operation. Frame Relay Signaling.

Configuring Frame Relay. Verifying Frame Relay Configuration and Operations.

show interface serial Command. show frame-relay pvc Command. show frame-relay map Command. show frame-relay lmi Command.

Frame Relay Topologies.

Reachability Issues with Routing Updates. Solution for Split Horizon Issues—Subinterfaces. Configuring Frame Relay Subinterfaces.

Frame Relay Traffic-Shaping Overview.

Traffic Shaping and Flow Terminology. Using Traffic Shaping over Frame Relay.

Configuring Frame Relay Traffic Shaping. Ways to Define a Map Class.

Traffic Shaping Examples. Rate Enforcement Example. Dynamic Enforcement Example. Queuing Example.

Verifying Frame Relay Traffic Shaping. Case Study—Establishing a Dedicated Frame Relay Connection and Controlling Traffic Flow.

Scenario. Task 1—Configuring Frame Relay Subinterfaces on the Central Site Router. Task 2—Configuring Frame Relay on the Branch Office Router. Task 3—Verifying Frame Relay Operation. Task 4—Enabling Frame Relay Traffic-Shaping BECN Support from the Central Site.

Solution to Case Study—Establishing a Dedicated Frame Relay.

Connection and Controlling Traffic Flow. Task 1 Solution: Configuring Frame Relay Subinterfaces on the Central Site Router. Task 2 Solution—Configuring Frame Relay on the Branch Office Router. Task 3 Solution—Verifying Frame Relay Operation. Task 4 Solution—Enabling Frame Relay Traffic-Shaping BECN. Support from the Central Site. Case Study Conclusion.

Review Questions.



12. Enabling Backup to a Permanent Connection.

Dial Backup Overview. Configuring Dial Backup.

Example of Dial Backup for Link Failure.

Activating a Dial Backup to Support Primary Line Traffic.

Example of Dial Backup for Excessive Traffic Load.

Backup Interface Operations. Dialer Profiles as Backup Interfaces.

Configuring Dial Backup with Dialer Profiles.

Routing with the Load Backup Feature.

Load Backup with OSPF. Load Backup with IGRP and EIGRP.

Verifying Dial Backup Configuration. Summary. Case Study—Enabling a Backup to a Permanent Connection.

Scenario. Task 1—Prepare the Branch Office Router's BRI Interface to Be a Dial Backup. Task 2—Establish a Backup Connection for the Central Site's Frame Relay Link. Task 3—Verify and Enable the Dial Backup.

Solution to Case Study—Enabling a Backup to a Permanent Connection.

Task 1 Solution—Prepare the Branch Office Router's BRI Interface to Be a Dial Backup. Task 2 Solution—Establish a Backup Connection for the Central Site's Frame Relay Link. Task 3 Solution—Verify and Enable the Dial Backup. Case Study Conclusion.

Review Question.



13. Managing Network Performance with Queuing and Compression.

Queuing Overview.

The Need for Traffic Prioritization. Establishing a Queuing Policy. Choosing a Cisco IOS Queuing Option.

First In, First Out Queuing Overview. Weighted Fair Queuing Overview.

Configuring Weighted Fair Queuing.

Priority Queuing Overview.

Configuring Priority Queuing.

Custom Queuing Overview.

Custom Queuing Operation. Configuring Custom Queuing. Custom Queuing Example.

Verifying Queuing Operation. Queuing Comparison. Optimizing Traffic Flow with Data Compression. Compression Overview.

Link Compression Over a Point-to-Point Connection. Payload Compression. TCP IP Header Compression. Microsoft Point-to-Point Compression. Compression Considerations.

Configuring Data Compression. Summary. Case Study—Managing Network Performance with Queuing and Compression.

Scenario. Task 1—Devise a Queuing Strategy. Task 2—Verify Your Queuing Configuration.

Solution to Case Study—Managing Network Performance with Queuing and Compression.

Task 1 Solution—Devise a Queuing Strategy. Task 2 Solution—Verify Your Queuing Configuration. Example of Custom Queue Configuration. Case Study Conclusion.

Review Questions.



14. Scaling IP Addresses with Network Address Translation.

NAT Overview and Terminology.

NAT Implementation Considerations.

NAT Operation.

Traffic Types Supported in Cisco IOS NAT. Translating Inside Local Addresses. Overloading Inside Global Addresses. TCP Load Distribution. Handling Overlapping Networks.

Configuring NAT.

Static NAT Configuration. Dynamic NAT Configuration. Inside Global Address Overloading Configuration. TCP Load Distribution Configuration. NAT to Translate Overlapping Addresses Configuration.

Verifying and Troubleshooting NAT.

Verifying NAT. Troubleshooting NAT. Clearing NAT Translation Entries.

Configuring and Troubleshooting PAT On the 700 Router.

PAT Porthandler Operation. Configuring PAT. Monitoring PAT.

Summary. Case Study—Scaling IP Addresses with Network Address Translation.

Scenario. Task 1—Configuring Static Network Address Translation on the Branch Office Router. Task 2—Configuring Dynamic Network Address Translation on the Branch Office Router. Solution to Case Study—Scaling IP Addresses with Network Address Translation. Task 1 Solution—Configuring Static Network Address Translation on the Branch Office Router. Task 2 Solution—Configuring Dynamic Network Address Translation on the Branch Office Router. Case Study Conclusion.

Review Questions.



15. Using AAA to Scale Access Control in an Expanding Network.

Overview of Cisco Access Control Solutions. Overview of Cisco Secure. Understanding AAA.

Router Access Modes.

Configuring AAA.

Enabling AAA and Identifying the Server. AAA Authentication Commands. AAA Authorization Commands. AAA Accounting Commands. AAA and Virtual Profiles. Summary. Case Study—Using AAA to Scale Access Control in an Expanding Network.

Scenario. Task 1—Configure the Central Site Access Server for AAA. Task 2—Verify the Console Back Door. Task 3—Verify that a Valid Network Login Attempt Will Succeed. Task 4—Verify that an Invalid Network Login Attempt Fails.

Case Study Solution—Using AAA to Scale Access Control in an Expanding Network. Task 1—Configure the Central Site Access Server for AAA. Task 2—Verify the Console Back Door. Task 3—Verify that a Valid Network Login Attempt will Succeed. Task 4— Verify that an Invalid Network Login Attempt Fails. Case Study Conclusion.

Review Questions.



Appendix A: Summary of BCRAN Commands.

General Commands. General Configuration Commands. General Interface Configuration Commands. General IP Commands. IP Interface Configuration Command. General AAA Commands. General Line Configuration Commands. Map-Class Command. T1/E1 Controller Commands. General WAN Commands. WAN Configuration Commands. Cisco 700 IOS System Commands. Cisco 700 IOS Profile Commands.



Appendix B: Summary of ICRC Commands.

General Commands. General Configuration Commands. General Interface Configuration Commands. General IP Commands. IP Configuration Commands. General IPX Commands. IPX Configuration Commands. General AppleTalk Commands. AppleTalk Configuration Commands. General WAN Commands. WAN Configuration Commands. General DECnet Commands. DECnet Configuration Commands. General Vines Commands. Vines Configuration Commands.



Appendix C: Open Systems Interconnection (OSI) Reference Model.

Characteristics of the OSI Layers. Protocols. OSI Model and Communication Between Systems.

Interaction between OSI Model Layers. OSI Layer Services. OSI Model Layers and Information Exchange.

OSI Model Physical Layer. OSI Model Data Link Layer. OSI Model Network Layer. OSI Model Transport Layer. OSI Model Session Layer. OSI Model Presentation Layer. OSI Model Application Layer. Information Formats.



Appendix D: AT Commands for Modems and Chat-Scripts.

Entering AT Commands. AT Command Sets. Modem Troubleshooting Tips. Sample Modem Scripts.



Appendix E: RFC List.


Appendix F: Emerging and Complementary Technologies.

Cable Modems. XDSL. VPN and Layer 2 Tunneling Protocol. Mobile IP. Easy IP. Cisco DialOut Utility. Multichassis Multilink PPP. X.25 Over D Channel.



Appendix G: X.25 and Frame Relay Switching.

Setting Up the Router as an X.25 Switch.

Complete X.25 Switch Configuration.

Setting up the Router as a Frame Relay Switch. Configuring Switching.

Frame Relay Switching Example. Complete Frame Relay Switch Configuration.



Appendix H: Answers to Review Questions.

Chapter 2—Selecting Cisco Products for Remote Connections. Chapter 3—Assembling and Cabling the WAN Components. Chapter 4—Configuring Asynchronous Connections with Modems. Chapter 5—Configuring Point-to-Point Protocol and Controlling Network Access. Chapter 6—Accessing the Central Site with Windows 95. Chapter 7—Using ISDN and DDR Technologies to Enhance Remote Connectivity. Chapter 8—Optimizing the Use of DDR Interface—Dialer Profiles and Rotary Groups. Chapter 9—Configuring a Cisco 700 Series Router. Chapter 10—Using X.25 for Remote Access. Chapter 11—Frame Relay Connection and Traffic Flow Control. Chapter 12—Enabling Backup to a Permanent Connection. Chapter 13—Managing Network Performance with Queuing and Compression. Chapter 14—Scaling IP Addresses with Network Address Translation. Chapter 15—Using AAA to Scale Access Control in an Expanding Network.



Appendix I: BCRAN Case Study Addresses and Dial-Up Phone Numbers.

Overview. BCRAN Case Study Addresses and Dial-Up Phone Number Matrix, Part I. BCRAN Case Study Addresses and Dial-Up Phone Number Matrix, Part II. Pod Topology.



Glossary.


Index.

Errata

Errata - 19.5 KB -- 1578700914errata.doc

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