Chapter 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 Chapter 2 electing 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 Summary Review Questions Chapter 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 Summary Review Questions Chapter 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 Summary 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 92 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 Review Questions Chapter 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 Summary Case Study-Configuring PPP and Controlling Network Access with CHAP 134 Scenario 134 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 Route r 136 Task 2 Solution-Configuring Your Central Site Router to Accept Telnet Connections 138 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 Review Questions Chapter 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 Summary 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 Review Questions Chapter 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 181 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 208 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 Summary 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 Review Questions Chapter 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 Summary Case Study-Using Dialer Profiles to Enhance DDR Scenario Task Solution to Case Study-Using Dialer Profiles to Enhance DDR Case Study Conclusion Review Questions Chapter 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 281 IP Traffic with PAP Authentication between Two Cisco 700s IPX Traffic with CHAP Authentication between a Cisco 700 and an IOS-based Router 286 Authentication Quick Reference Guide Monitoring IP Routing Cisco 700 Series and DHCP Cisco 700-DHCP Functionality Summary 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 299 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 300 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 Review Questions Chapter 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 Summary 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 Review Questions Chapter 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 372 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 377 Chapter 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 394 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 Chapter 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，F(xiàn)irst 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 426 Task 1 Solution-Devise a Queuing Strategy Task 2 Solution-Verify Your Queuing Configuration Example of Custom Queue Configuration Case Study Conclusion Review Questions Chapter 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 4 55 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 458 Task 2-Configuring Dynamic Network Address Translation on the Branch Office Router 458 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 Chapter 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 483 Task 4- Verify that an Invalid Network Login Attempt Fails Case Study Conclusion 484 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 503 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
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