cisco ios dial technologies configuration guide, release 12.4

Cisco IOS Dial Technologies Configuration GuideRelease 12.4

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CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries. All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0601R)Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental. Cisco IOS Dial Technologies Configuration Guide 20052006 Cisco Systems, Inc. All rights reserved.

CONTENTSAbout Cisco IOS Software Documentation for Release 12.4 Documentation Objectives Audiencelvii lviii lvii lvii

Documentation Organization for Cisco IOS Release 12.4 Document Conventionslxiv

Obtaining Documentation lxv Cisco.com lxv Product Documentation DVD lxvi Ordering Documentation lxvi Documentation Feedbacklxvi

Cisco Product Security Overview lxvii Reporting Security Problems in Cisco Products

lxvii

Obtaining Technical Assistance lxviii Cisco Technical Support & Documentation Website Submitting a Service Request lxviii Definitions of Service Request Severity lxix Obtaining Additional Publications and Information Using Cisco IOS Software for Release 12.4 Understanding Command Modeslxxi lxxi lxix

lxviii

Getting Help lxxii Example: How to Find Command Options Using the no and default Forms of Commands Saving Configuration Changeslxxvi

lxxiii lxxvi

Filtering Output from the show and more Commands Finding Additional Feature Support Informationlxxvii

lxxvii

PART 1: DIAL INTERFACES, CONTROLLERS, AND LINES Overview of Dial Interfaces, Controllers, and Lines Cisco IOS Dial Components3 3

Logical Constructs 5 Asynchronous Interfaces 5 Group Asynchronous Interfaces

6

Cisco IOS Dial Technologies Configuration Guide

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Contents

Virtual Template Interfaces 6 Templates for Virtual Access Interfaces Templates for Protocol Translation 7 Logical Interfaces 7 Dialer Interfaces 8 Virtual Access Interfaces 9 Virtual Asynchronous Interfaces Circuit-Switched Digital Calls T1 and E1 Controllers ISDN Service 13 ISDN BRI 13 ISDN PRI 1412 11

7

10

Non-ISDN Channelized T1 and Channelized E1 Lines

12

Line Types 15 Relationship Between Lines and Interfaces 16 Asynchronous Interfaces and Physical Terminal Lines 16 Synchronous Interfaces and Virtual Terminal Lines 17 Encapsulation Types18

Configuring Asynchronous Lines and Interfaces Configuring Asynchronous Lines and Interfaces21

How to Configure Asynchronous Interfaces and Lines 21 Configuring a Typical Asynchronous Interface 22 Monitoring and Maintaining Asynchronous Connections 22 Creating a Group Asynchronous Interface 23 Verifying the Group Interface Configuration 24 Configuring Asynchronous Rotary Line Queueing 27 Verifying Asynchronous Rotary Line Queueing 28 Troubleshooting Asynchronous Rotary Lines 28 Monitoring and Maintaining Asynchronous Rotary Line Queues Configuring Autoselect 29 Verifying Autoselect PPP 30 Verifying Autoselect ARA 30 How to Configure Other Asynchronous Line and Interface Features 31 Configuring the Auxiliary (AUX) Port 31 Establishing and Controlling the EXEC Process 32 Enabling Routing on Asynchronous Interfaces 33 Configuring Dedicated or Interactive PPP and SLIP Sessions 33Cisco IOS Dial Technologies Configuration Guide

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Conserving Network Addresses 34 Using Advanced Addressing Methods for Remote Devices 35 Assigning a Default Asynchronous Address 35 Allowing an Asynchronous Address to Be Assigned Dynamically Optimizing Available Bandwidth 36 Configuring Header Compression 36 Forcing Header Compression at the EXEC Level 37

35

Configuration Examples for Asynchronous Interfaces and Lines 37 Interface and Line Configuration Examples 38 Asynchronous Interface Backup DDR Configuration Example 38 Passive Header Compression and Default Address Example 38 High-Density Dial-In Solution Using Autoselect and EXEC Control Example 38 Asynchronous Line Backup DDR Configuration Example 39 Line AUX Configuration Example 39 Rotary Group Examples 39 Dedicated Asynchronous Interface Configuration Example 40 Access Restriction on the Asynchronous Interface Example 40 Group and Member Asynchronous Interface Examples 40 Asynchronous Group Interface Examples 41 Modem Asynchronous Group Example 41 High-Density Dial-In Solution Using an Asynchronous Group 42 Asynchronous Interface Address Pool Examples 42 DHCP Pooling Example 42 Local Pooling Example 42 Configuring Specific IP Addresses for an Interface 43 IP and SLIP Using an Asynchronous Interface Example 43 IP and PPP Asynchronous Interface Configuration Example 43 Asynchronous Routing and Dynamic Addressing Configuration Example 44 TCP Header Compression Configuration Example 44 Network Address Conservation Using the ip unnumbered Command Example 44 Asynchronous Interface As the Only Network Interface Example 45 Routing on a Dedicated Dial-In Router Example 45 IGRP Configuration Example 46 Asynchronous Call Queueing by Role Contents47 48 48 48 47

Prerequisites for Asynchronous Call Queueing by Role Restrictions for Asynchronous Call Queueing by Role Information About Asynchronous Call Queueing by Role Authentication of Connections 48


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Benefits of Asynchronous Call Queueing by Role

49

How to Configure Asynchronous Call Queueing by Role 49 Configuring Asynchronous Call Queueing by Role 49 Troubleshooting Tips 50 Monitoring and Maintaining Asynchronous Rotary Line Queues Configuration Examples for Asynchronous Call Queueing by Role 51 Configuring Asynchronous Call Queueing by Role Example 51 Verifying Asynchronous Call Queueing by Role Example 51 Additional References 52 Related Documents 52 Standards 52 MIBs 52 RFCs 53 Technical Assistance 53 Command Reference Glossary54 55 53

50

Asynchronous Line Monitoring Feature Overview 55 Benefits 56 Restrictions 56 Related Documents Supported Platforms Prerequisites58 56

56

Supported Standards, MIBs, and RFCs

57

Configuration Tasks 58 Ensuring That an EXEC Process Is Running on the Asynchronous Port to Be Monitored Monitoring and Maintaining Character Mode Asynchronous Traffic Verifying Traffic Line Monitoring 59 Troubleshooting Tips 59 Configuration Examples Command Reference61 59 58

58

Configuring Asynchronous Serial Traffic over UDP 63 UDPTN Overview63

How to Configure Asynchronous Serial Traffic over UDP 64 Preparing to Configure Asynchronous Serial Traffic over UDP Configuring a Line for UDPTN 64Cisco IOS Dial Technologies Configuration Guide

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Enabling UDPTN 65 Verifying UDPTN Traffic

65

Configuration Examples for UDPTN 66 Multicast UDPTN Example 66 Broadcast UDPTN Example 67 Point-to-Point UDPTN Example 67 PART 2: MODEM CONFIGURATION AND MANAGEMENT Overview of Modem Interfaces Cisco IOS Modem Components71 71

Cisco Modems and Cisco IOS Modem Features72

Logical Constructs in Modem Configurations 74 Asynchronous Interfaces 74 Group Asynchronous Interfaces 75 Modem Lines and Asynchronous Interfaces 76 Modem Calls 77 Asynchronous Line Configuration 77 Absolute Versus Relative Line Numbers 77 Line and Modem Numbering Issues 78 Decimal TCP Port Numbers for Line Connections Signal and Flow Control Overview 80 Configuring and Managing Integrated Modems Configuring and Managing Integrated Modems Modems and Modem Feature Support 83 V.90 Modem Standard 84 V.110 Bit Rate Adaption Standard 84 V.120 Bit Rate Adaptation Standard 8683

79

Managing Modems 86 Managing SPE Firmware 87 Configuring Modems in Cisco Access Servers 89 Configuring Modem Lines 89 Verifying the Dial-In Connection 90 Troubleshooting the Dial-In Connection 91 Configuring the Modem Using a Modemcap 91 Configuring the Modem Circuit Interface 93 Comparison of NextPort SPE and MICA Modem Commands 93 Configuring Cisco Integrated Modems Using Modem Attention Commands

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Using Modem Dial Modifiers on Cisco MICA Modems 96 Changing Configurations Manually in Integrated Microcom Modems Configuring Leased-Line Support for Analog Modems 98 Configuring Modem Pooling 102 Creating a Modem Pool 103 Verifying Modem Pool Configuration 104 Configuring Physical Partitioning 105 Creating a Physical Partition 106 Physical Partitioning with Dial-In and Dial-Out Scenario 108 Configuring Virtual Partitioning 110 Configuring Call Tracker 111 Verifying Call Tracker 112 Enabling Call Tracker 112 Configuring Polling of Link Statistics on MICA Modems 113 Configuring MICA In-Band Framing Mode Control Messages 114 Enabling Modem Polling 115 Setting Modem Poll Intervals 115 Setting Modem Poll Retry 115 Collecting Modem Statistics 115 Logging EIA/TIA Events 115 Configuring a Microcom Modem to Poll for Statistics 116 Troubleshooting Using a Back-to-Back Modem Test Procedure 116 Clearing a Direct Connect Session on a Microcom Modem 119 Displaying Local Disconnect Reasons 119 Removing Inoperable Modems 122 Busying Out a Modem Card 124 Monitoring Resources on Cisco High-End Access Servers 124 Enabling DS0 Busyout Traps 125 Enabling ISDN PRI Requested Channel Not Available Traps 126 Enabling Modem Health Traps 126 Enabling DS1 Loopback Traps 126 Verifying Enabled Traps 126 Troubleshooting the Traps 127 NAS Health Monitoring Example 127 Configuration Examples for Modem Management 130 NextPort Modem Log Example 130 Modem Performance Summary Example 131 Modem AT-Mode Example 131 Connection Speed Performance Verification Example

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1- and 2-Port V.90 Modem WICs for Cisco 2600 and Cisco 3600 Series Multiservice Platforms 135 Feature Overview 135 Remote Router Management and Out-of-Band Access 135 Asynchronous Dial-on-Demand Routing and Dial-Backup 136 Low-Density Analog RAS Access 136 Benefits 136 Restrictions 137 Related Features and Technologies 137 Related Documents 137 Supported Platforms138 138


Configuration Tasks 138 Asynchronous Interface Configuration 139 Line Configuration 140 Alternative Configurations for the Modem WIC 140 Configuring the Group Asynchronous Interface 140 Configuring the Dialer List 141 Configuring the Line 141 Configuring the Dialer Interface 141 Configuring for Asynchronous Dial Backup 141 Verifying the V.90 Modem WIC Configuration 142 Troubleshooting the V.90 Modem WIC Operation 143 Command Reference Glossary144 145 143

Call Tracker show Commands Extensions Feature Overview 145 Benefits 145 Supported Platforms Prerequisites147 147 147 147 146 146

Supported Standards, MIBs, and RFCs Configuration Tasks Command Reference Glossary148

Configuration Examples

Cisco NM-8AM-V2 and NM-16AM-V2 Analog Modem Network Modules with V.92 Contents149

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Information About Cisco NM-8AM-V2 and NM-16AM-V2 Network Modules Overview 150 Key Features and Benefits 150 Network Management 151 Security 151 Modem Management 151 Chat Script 152

150

How to Configure the Cisco NM-8AM-V2 and NM-16AM-V2 Network Modules Configuring the Modems for the Country of Deployment 153 Verifying the Modem Configuration 154 Troubleshooting Tips 154

153

Configuration Examples for Cisco NM-8AM-V2 and NM-16AM-V2 Network Modules Example of the modem country smart_acf Command 156 Additional References 156 Related Documents 156 Standards 156 MIBs 157 RFCs 157 Technical Assistance 157 Command Reference Glossary158 159 157

156

MICA and NextPort Modem Tech-Support Command Additions Feature Overview 159 Benefits 160 Restrictions 160 Related Documents Supported Platforms160 161

160


Configuration Tasks 161 Using the show tech-support Modem EXEC Commands Creating a Modem Report 162 Configuration Examples Command Reference163 165

161

PIAFS Wireless Data Protocol Version 2.1 for Cisco MICA Modems Feature Overview 167 PIAFS Protocol 169 Benefits 170Cisco IOS Dial Technologies Configuration Guide

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Restrictions 170 Related Documents 171 Technical Assistance Center Supported Platforms Prerequisites173 172

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173

Configuration Tasks 174 Configuring PIAFS 174 Verifying PIAFS 174 Configuring a Resource-Pool Group Resource 176 Verifying Resource-Pool Group Resource 176 Configuration Examples Command Reference Glossary178 179 177 177

V.92 and V.44 Support for Digital Modems Contents179

Prerequisites for V.92 and V.44 Support for Digital Modems Restrictions for V.92 Support for Digital Modems180

180

Information About V.92 and V.44 Support for Digital Modems ITU-T V.92 Modem Standard 181 V.92 Modem on Hold 181 V.92 Quick Connect 183 V.44 LZJH Compression 184 V.44 AT Commands and S-Registers 185

180

How to Use the V.92 and V.44 Support for Digital Modems Feature Monitoring Cisco Modems 186 Configuration Examples186

186

Additional References 186 Related Documents 187 Standards 187 MIBs 187 RFCs 189 Technical Assistance 189 Command Reference189 191

V.92 Modem on Hold for Cisco AS5300 and Cisco AS5800 Universal Access Servers Feature Overview V.92 192192


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Modem on Hold 192 AT Commands (Modemcaps) and S-Registers 193 RADIUS Authorization 194 Configuring V.92 Modem on Hold with RADIUS 196 Modem Enhancements for V.92 Modem On Hold 197 Supported Module Firmware and Cisco IOS Software 198 Benefits 198 Restrictions 199 Related Features and Technologies 199 Related Documents 200 Supported Platforms Prerequisites202 202 202 200 201

Supported Standards, MIBs, and RFCs Configuration Tasks

Monitoring and Maintaining Modem on Hold Configuration Examples Command Reference Glossary203 202 202

V.92 Modem on Hold for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers 205 Feature Overview 206 V.92 206 Modem on Hold 206 AT Commands (Modemcaps) and S-Registers 207 RADIUS Authorization 208 Configuring V.92 Modem on Hold with RADIUS 210 Modem Enhancements for V.92 Modem On Hold 211 Supported Module Firmware and Cisco IOS Software Benefits 212 Restrictions 213 Related Features and Technologies 213 Related Documents 213 Supported Platforms Prerequisites216 216 216 214 215

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Monitoring and Maintaining Modem on Hold Configuration ExamplesCisco IOS Dial Technologies Configuration Guide

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Command Reference Glossary218

217

V.92 Quick Connect for Cisco AS5300 and Cisco AS5800 Universal Access Servers Feature Overview 220 V.92 220 Quick Connect 220 AT Commands and S-Registers 221 Benefits 223 Restrictions 223 Related Features and Technologies 223 Related Documents 223 Supported Platforms Prerequisites225 225 225 226 224 225

219



V.92 Quick Connect for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers 229 Feature Overview 230 V.92 230 Quick Connect 231 AT Commands and S-Registers 232 Benefits 233 Restrictions 233 Related Features and Technologies 233 Related Documents 234 Supported Platforms Prerequisites236 236 236 236 234 235




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V.92 Reporting Using RADIUS Attribute v.92-info Contents239

239

Prerequisites for V.92 Reporting Using RADIUS Attribute v.92-info 240 Restrictions for V.92 Reporting Using RADIUS Attribute v.92-info Information About V.92 Reporting Using RADIUS Attribute v.92-info V.92 Standard Overview 240 VSA v.92-info 241 How to Monitor and Verify V.92 Call Information Monitoring V.92 Call Information 241 Examples 242 Verifying V.92 Call Information 249 Examples 249 Troubleshooting Tips 252 Additional References 253 Related Documents 253 Standards 253 MIBs 254 RFCs 254 Technical Assistance 254 Command Reference254 255 241 240 240

Configuring and Managing Cisco Access Servers and Dial Shelves Cisco AS5800 Dial Shelf Architecture and DSIP Overview Split Dial Shelves Feature 256 How to Configure Dial Shelves 256 Configuring the Shelf ID 257 Configuring Redundant DSC Cards 258 Synchronizing to the System Clocks 259 Verifying External Clock Configuration 260 Configuring Dial Shelf Split Mode 260 Changing Slot Sets 262 Leaving Split Mode 263 Troubleshooting Split Dial Shelves 263 Managing a Split Dial Shelf 263 Executing Commands Remotely 264 Verifying DSC Configuration 265 Monitoring and Maintaining the DSCs 265 Troubleshooting DSIP 265255


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Port Management Services on Cisco Access Servers

266

Upgrading and Configuring SPE Firmware 268 Downloading SPE Firmware from the Cisco.com FTP Server to a Local TFTP Server Copying the SPE Firmware File from the Local TFTP Server to the SPEs 271 Specifying a Country Name 272 Configuring Dial Split Shelves (AS5800 Only) 272 Configuring SPEs to Use an Upgraded Firmware File 273 Disabling SPEs 274 Rebooting SPEs 275 Configuring Lines 276 Configuring Ports 277 Verifying SPE Line and Port Configuration 278 Configuring SPE Performance Statistics 278 Clearing Log Events 279 Troubleshooting SPEs 279 Monitoring SPE Performance Statistics 281 SPE Events and Firmware Statistics 281 Port Statistics 281 Digital SPE Statistics 282 SPE Modem Statistics 283 Configuring and Managing External Modems External Modems on Low-End Access Servers Automatically Configuring an External Modem Manually Configuring an External Modem Supporting Dial-In Modems Managing Telnet Sessions Modem Troubleshooting Tips289 291 288 285 285 286

269

Testing the Modem Connection292

294 295 297

Checking Other Modem Settings Modem Signal and Line States

Signal and Line State Diagrams 297 Configuring Automatic Dialing 299 Automatically Answering a Modem 299 Supporting Dial-In and Dial-Out Connections 300 Configuring a Line Timeout Interval 301 Closing Modem Connections 302 Configuring a Line to Disconnect Automatically 303


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Supporting Reverse Modem Connections and Preventing Incoming Calls Creating and Using Modem Chat Scripts Creating and Using Modem Chat Scripts Chat Script Overview307 307

303

How To Configure Chat Scripts 308 Understanding Chat Script Naming Conventions 308 Creating a Chat Script 308 Chat String Escape Key Sequences 309 Adding a Return Key Sequence 309 Chat String Special-Case Script Modifiers 310 Configuring the Line to Activate Chat Scripts 310 Manually Testing a Chat Script on an Asynchronous Line Using Chat Scripts 311 Generic Chat Script Example 311 Traffic-Handling Chat Script Example 311 Modem-Specific Chat Script Examples 312 Dialer Mapping Example 312 System Login Scripts and Modem Script Examples

311

313 315

Modem Script and System Script Support in Large-Scale Dial-Out Feature Overview 315 Benefits 315 Related Documents Supported Platforms316 316

316


Configuration Tasks 317 Creating the Dial-Out Profile 317 Creating the Chat Script 317 Verifying Modem and System Chat Scripts with Large-Scale Dial-Out Monitoring and Maintaining Large-Scale Dial-Out Sessions Configuration Examples 318 Dial-Out Profile Examples 318 Chat Script Example 319 Verification Example 319 Command Reference Appendix Glossary320 321 319 318

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Cisco Modem User Interface Feature Overview 323 Benefits 324 Restrictions 324 Supported Platforms325

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325

Configuration Tasks 326 Configuring the Telephone Number for the Cisco Modem User Interface Connection Configuring a Line for the Cisco Modem User Interface 326 Entering Cisco Modem User Interface Mode from EXEC Mode 327 Configuring Banners for the Hayes Information Mode Command 327 Verifying Cisco Modem User Interface Mode 330 Verifying the Cisco Modem User Interface Telephone-to-IP-Address Map 330 Troubleshooting Tips 331 Monitoring and Maintaining the Cisco Modem User Interface Configuration Examples 331 Automatic Connection Configuration Example 331 Asynchronous Tunnel Termination Configuration Example Banner Setup and Display Example 333 Command Reference Glossary335 334 331

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332

PART 3: ISDN CONFIGURATION Configuring ISDN BRI Configuring ISDN BRI341

ISDN Overview 341 Requesting BRI Line and Switch Configuration from a Telco Service Provider Interface Configuration 344 Dynamic Multiple Encapsulations 344 Interface Configuration Options 344 ISDN Cause Codes 345 How to Configure ISDN BRI 346 Configuring the ISDN BRI Switch 346 Configuring the Switch Type 346 Checking and Setting the Buffers 347 Multiple ISDN Switch Types Feature 348 Specifying Interface Characteristics for an ISDN BRI

342

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Specifying the Interface and Its IP Address 349 Specifying ISDN SPIDs 349 Configuring Encapsulation on ISDN BRI 349 Configuring Network Addressing 351 Configuring TEI Negotiation Timing 352 Configuring CLI Screening 352 Configuring Called Party Number Verification 352 Configuring ISDN Calling Number Identification 353 Configuring the Line Speed for Calls Not ISDN End to End 353 Configuring a Fast Rollover Delay 354 Overriding ISDN Application Default Cause Codes 354 Configuring Inclusion of the Sending Complete Information Element Configuring DNIS-plus-ISDN-Subaddress Binding 355 Screening Incoming V.110 Modem Calls 355 Disabling V.110 Padding 356 Configuring ISDN Semipermanent Connections 356 Configuring ISDN BRI for Leased-Line Service 356 Configuring Leased-Line Service at Normal Speeds 357 Configuring Leased-Line Service at 128 Kbps 357 Monitoring and Maintaining ISDN Interfaces Troubleshooting ISDN Interfaces358 358

355

Configuration Examples for ISDN BRI 359 Global ISDN and BRI Interface Switch Type Example 359 BRI Connected to a PBX Example 359 Multilink PPP on a BRI Interface Example 359 Dialer Rotary Groups Example 360 Compression Examples 360 Multilink PPP and Compression Example 361 Voice over ISDN Examples 361 DNIS-plus-ISDN-Subaddress Binding Example 362 Screening Incoming V.110 Modem Calls Example 362 ISDN BRI Leased-Line Configuration Example 362 Leased and Switched BRI Interfaces for ETSI NET3 363 Feature Overview 363 Benefits 364 Restrictions 364 Related Documents Supported Platforms364

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Supported Standards, MIBs, and RFCs Prerequisites365

365

Configuration Tasks 365 Configuring Leased and Switched BRI Interfaces for ETSI NET3 366 Verifying Leased and Switched BRI Interfaces for ETSI NET3 366 Troubleshooting Tips 367 Monitoring and Maintaining Leased and Switched BRI Interfaces for ETSI NET3 Configuration Examples 368 Leased and Switched BRI Interfaces for ETSI NET3 Example Command Reference Glossary369 371 368 368 367

ISDN BCAC and Round-Robin Channel Selection Enhancements Contents371 372

Prerequisites for ISDN BCAC Enhancements

Information About the ISDN BCAC and Round-Robin Channel Selection Enhancements BCAC Enhancements 372 Round-Robin Selection Scheme for ISDN B Channels 372 Logging of ISDN Events 373 Additional ISDN Switch Types Supported for Network Emulation 373 How to Configure the ISDN Enhancements 373 Configuring BCAC Service Audit Triggers 373 Examples 374 Configuring BCAC Service State Triggers 375 Examples 375 Configuring BCAC Message Retransmission 376 Examples 377 Configuring B-Channel Selection Order 377 Examples 378 Configuring ISDN Syslog Messages 378 Examples 379

372

Configuration Examples for ISDN BCAC and Round-Robin Channel Selection Enhancements Additional References 379 Related Documents 380 Standards 380 MIBs 380 RFCs 380 Technical Assistance 381 Command Reference381Cisco IOS Dial Technologies Configuration Guide

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Glossary

382

Configuring Virtual Asynchronous Traffic over ISDN 383 Recommendation V.120 Overview384

How to Configure V.120 Access 384 Configuring Answering of All Incoming Calls as V.120 384 Configuring Automatic Detection of Encapsulation Type 385 Enabling V.120 Support for Asynchronous Access over ISDN 385 Configuration Example for V.120 ISDN LAPB-TA Overview386 386

How to Configure ISDN LAPB-TA 387 Verifying ISDN LAPB-TA 388 Configuration Example for ISDN LAPB-TA Configuring Modem Use over ISDN BRI Modem over ISDN BRI Overview392 389 391

How to Configure Modem over ISDN BRI 393 Verifying ISDN BRI Interface Configuration

396 398

Configuration Examples for Modem over ISDN BRI BRI Interface Configuration Example 398 Complete Configuration Examples 401 Configuring X.25 on ISDN413

X.25 on ISDN Overview 413 X.25-over-D-Channel Logical Interface 413 Outbound Circuit-Switched X.25 Support over a Dialer Interface How to Configure X.25 on ISDN 414 Configuring X.25 on the ISDN D Channel415

414

Configuration Examples for X.25 on ISDN 415 X.25 on ISDN D-Channel Configuration Example Outbound Circuit-Switched X.25 Example 416 Configuring X.25 on ISDN Using AO/DI AO/DI Overview 421 PPP over X.25 Encapsulation 423 Multilink PPP Bundle 424 MLP Encapsulation Enhancements BACP/BAP 425 How to Configure an AO/DI InterfaceCisco IOS Dial Technologies Configuration Guide

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424

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Configuring PPP and BAP on the Client 425 Configuring X.25 Parameters on the Client 426 Configuring PPP and BAP on the Server 426 Configuring X.25 Parameters on the Server 427 How to Configure an AO/DI Client/Server 427 Configuring the AO/DI Client 428 Enabling AO/DI on the Interface 428 Enabling the AO/DI Interface to Initiate Client Calls 428 Enabling the MLP Bundle to Add Multiple Links 428 Modifying BACP Default Settings 429 Configuring the AO/DI Server 429 Enabling the Interface to Receive AO/DI Client Calls 429 Enabling the MLP Bundle to Add Multiple Links 430 Modifying BACP Default Settings 430 Configuration Examples for AO/DI 431 AO/DI Client Configuration Example 431 AO/DI Server Configuration Example 432 Configuring ISDN on Cisco 800 Series Routers CAPI and RCAPI Overview 434 Framing Protocols 434 Data Link and Network Layer Protocols CAPI Features 434 Supported B-Channel Protocols 435 Supported Switch Types 436 CAPI and RVS-COM 436 Supported Applications 437 Helpful Website 437433

434

How to Configure RCAPI 437 Configuring RCAPI on the Cisco 800 Series Router Monitoring and Maintaining RCAPI 438 Troubleshooting RCAPI 438 Configuration Examples for RCAPI438

437

PART 4: SIGNALING CONFIGURATION Cisco IOS Software Feature Removal Feature Overview 443 AppleTalk EIGRP 444 Apollo Domain 444Cisco IOS Dial Technologies Configuration Guide

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Banyan VINES 444 Exterior Gateway Protocol 446 HP Probe 446 Interior Gateway Routing Protocol 446 LAN Extension 447 Netware Asychronous Services Interface Protocol 447 Next Hop Resolution Protocol for IPX 447 Novell Link-State Protocol 448 Simple Multicast Routing Protocol for AppleTalk 449 Xerox Network Systems 450 Xremote 451 Configuring ISDN PRI Configuring ISDN PRI455

Signaling Overview 456 In-Band and Out-of-Band Signaling 456 Channelized E1 and T1 on Cisco Devices 456 How to Configure ISDN PRI 457 Requesting PRI Line and Switch Configuration from a Telco Service Provider 457 Configuring Channelized E1 ISDN PRI 458 Configuring Channelized T1 ISDN PRI 459 Configuring the Serial Interface 460 Specifying an IP Address for the Interface 461 Configuring Encapsulation on ISDN PRI 461 Configuring Network Addressing 463 Configuring ISDN Calling Number Identification 464 Overriding the Default TEI Value 464 Configuring a Static TEI 464 Configuring Incoming ISDN Modem Calls 464 Filtering Incoming ISDN Calls 465 Configuring the ISDN Guard Timer 466 Configuring Inclusion of the Sending Complete Information Element 466 Configuring ISDN PRI B-Channel Busyout 467 Configuring NSF Call-by-Call Support 467 Configuring Multiple ISDN Switch Types 468 Configuring B Channel Outgoing Call Order 470 Performing Configuration Self-Tests 470 Monitoring and Maintaining ISDN PRI Interfaces471 471

How to Configure Robbed-Bit Signaling for Analog Calls over T1 LinesCisco IOS Dial Technologies Configuration Guide

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How to Configure CAS 473 CAS on Channelized E1 473 Configuring CAS for Analog Calls over E1 Lines 474 Configuring CAS on a Cisco Router Connected to a PBX or PSTN CAS on T1 Voice Channels 475 Configuring ANI/DNIS Delimiters for CAS Calls on CT1 475

474

How to Configure Switched 56K Digital Dial-In over Channelized T1 and Robbed-Bit Signaling Switched 56K Scenarios 477 Switched 56K and Analog Modem Calls into T1 CAS 477 Basic Call Processing Components 478 ISDN BRI Calls into T1 CAS 479 How to Configure Switched 56K Services479

476

How to Configure E1 R2 Signaling 480 E1 R2 Signaling Overview 480 Configuring E1 R2 Signaling 483 Configuring E1 R2 Signaling for Voice 483 Monitoring E1 R2 Signaling 484 Verifying E1 R2 Signaling 485 Troubleshooting E1 R2 Signaling 486 Enabling R1 Modified Signaling in Taiwan 487 R1 Modified Signaling Topology 487 R1 Modified Signaling Configuration Task List 488 Configuring R1 Modified Signaling on a T1 Interface 489 Configuring R1 Modified Signaling on an E1 Interface 490 Troubleshooting Channelized E1 and T1 Channel Groups 491 Interface Local Loopback 491 Interface Remote Loopback 492 Configuration Examples for Channelized E1 and Channelized T1 492 ISDN PRI Examples 492 Global ISDN, BRI, and PRI Switch Example 493 Global ISDN and Multiple BRI and PRI Switch Using TEI Negotiation Example NSF Call-by-Call Support Example 493 PRI on a Cisco AS5000 Series Access Server Example 494 ISDN B-Channel Busyout Example 496 Multiple ISDN Switch Types Example 496 Outgoing B-Channel Ascending Call Order Example 496 Static TEI Configuration Example 497 Call Reject Configuration Examples 497 ISDN Cause Code Override and Guard Timer Example 497

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PRI Groups and Channel Groups on the Same Channelized T1 Controller Example 497 Robbed-Bit Signaling Examples 498 Allocating All Channels for Robbed-Bit Signaling Example 498 Mixing and Matching ChannelsRobbed-Bit Signaling and Channel Grouping 498 Switched 56K Configuration Examples 498 Switched 56K T1 Controller Procedure 499 Mixture of Switched 56K and Modem Calls over CT1 CAS Example 499 Switched 56K and Analog Modem Calls over Separate T1 CAS Lines Example 500 Comprehensive Switched 56K Startup Configuration Example 500 ISDN CAS Examples 505 Allocating All Channels for CAS Example 505 Mixing and Matching ChannelsCAS and Channel Grouping Example 506 E1 R2 Signaling Procedure 506 R1 Modified Signaling Using an E1 Interface Example 508 R1 Modified Signaling for Taiwan Configuration Example 510 Dialing Number Enhancement Feature Overview 511 Benefits 511 Restrictions 511 Related Documents Supported Platforms512 513 511

512

Supported Standards, MIBs, and RFCs Configuration Tasks 513 Troubleshooting Tips 513

Monitoring and Maintaining Dialing Number Enhancement Configuration Examples 514 Data Call Dialing Number Enhancement Example 514 Voice Call Dialing Number Enhancement Example 515 Command Reference516

514

ISDN BCAC and Round-Robin Channel Selection Enhancements Contents517 518

517

Prerequisites for ISDN BCAC Enhancements

Information About the ISDN BCAC and Round-Robin Channel Selection Enhancements BCAC Enhancements 518 Round-Robin Selection Scheme for ISDN B Channels 518 Logging of ISDN Events 519 Additional ISDN Switch Types Supported for Network Emulation 519

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How to Configure the ISDN Enhancements 519 Configuring BCAC Service Audit Triggers 519 Examples 520 Configuring BCAC Service State Triggers 521 Examples 521 Configuring BCAC Message Retransmission 522 Examples 523 Configuring B-Channel Selection Order 523 Examples 524 Configuring ISDN Syslog Messages 524 Examples 525 Configuration Examples for ISDN BCAC and Round-Robin Channel Selection Enhancements Additional References 525 Related Documents 526 Standards 526 MIBs 526 RFCs 526 Technical Assistance 527 Command Reference Glossary528 529 527 525

ISDN PRI-SLT Contents529

Information About ISDN PRI-SLT 530 ISDN Assumptions About the Location of the PRI D Channel 530 ISDN Commands Supported by ISDN PRI-SLT 531 The D-Channel Interface and Cisco SS7 Interconnect for Voice Gateways How to Configure ISDN PRI-SLT 532 Release the PRI Signaling Time Slot Verify ISDN PRI-SLT 534 Troubleshooting Tips 535532

532

Configuration Examples for ISDN PRI-SLT 535 SS7-Enabled VoIP PRI Shared T1 Configuration Example Verify ISDN PRI-SLT Example 535 Additional References 536 Related Documents 537 Standards 537 MIBs 537 RFCs 538

535


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Contents

Technical Assistance Command Reference538

538

Configuring ISDN Special Signaling

541

How to Configure ISDN Special Signaling 541 Configuring ISDN AOC 542 Configuring Short-Hold Mode 542 Monitoring ISDN AOC Call Information 543 Configuring NFAS on PRI Groups 543 ISDN NFAS Prerequisites 544 ISDN NFAS Configuration Task List 544 Configuring NFAS on PRI Groups 544 Configuring NTT PRI NFAS 545 Disabling a Channel or Interface 546 When the T1 Controller Is Shut Down 547 Monitoring NFAS Groups 547 Monitoring ISDN Service 547 Enabling an ISDN PRI to Take PIAFS Calls on MICA Modems 547 Verifying PIAFS 548 Configuring Automatic Detection of Encapsulation Type 548 Configuring Encapsulation for Combinet Compatibility 549 Troubleshooting ISDN Special Signaling550

Configuration Examples for ISDN Special Signaling 550 ISDN AOC Configuration Examples 550 Using Legacy DDR for ISDN PRI AOC Configuration 550 Using Dialer Profiles for ISDN BRI AOC Configuration 551 ISDN NFAS Configuration Examples 552 NFAS Primary and Backup D Channels 552 PRI Interface Service State 553 NTT PRI NFAS Primary D Channel Example 553 Configuring Network Side ISDN PRI Signaling, Trunking, and Switching Network Side ISDN PRI Signaling Overview Call Switching Using Dial Peers 556 Trunk Group Resource Manager 556 Class of Restrictions 557 ISDN Disconnect Timers 557555 555

How to Configure Network Side ISDN PRI 557 Configuring ISDN Network Side 558 Configuring ISDN Network Side for the National ISDN Switch TypeCisco IOS Dial Technologies Configuration Guide

559

xxvi

Contents

Configuring ISDN Network Side for ETSI Net5 PRI 559 Configuring Global or Interface Trunk Groups 560 Configuring Classes of Restrictions 561 Configuring ISDN T306 and T310 Timers 562 Verifying Network Side ISDN PRI Signaling, Trunking, and Switching Monitoring Network Side ISDN PRI 565 Monitoring TGRM 566

562

Configuration Examples for Network Side ISDN PRI Signaling, Trunking, and Switching Call Switching and Dial Peers Configuration on T1/T3 Example 566 Trunk Group Configuration Example 567 COR for Dial Peer Configuration Example 567 COR Based on Outgoing Dial Peers Example 568 Dial Peers and Trunk Groups for Special Numbers Examples 569 ISDN Network Side for ETSI Net5 PRI Configuration on E1 Example 570 T306/T310 Timer Configuration Example 570 PART 5: DIAL-ON-DEMAND ROUTING CONFIGURATION Preparing to Configure DDR DDR Decision Flowchart DDR Topology Decisions573 573 575 575 576

566

DDR-Independent Implementation Decisions DDR-Dependent Implementation Decisions Dialer Profiles 576 Legacy DDR 577 Simple or Complex DDR Configuration

577

Global and Interface Preparations for DDR 577 Preparations Depending on the Selected Interface Type

578

Preparations for Routing or Bridging over DDR 578 Preparing for Transparent Bridging over DDR 578 Defining the Protocols to Bridge 578 Specifying the Bridging Protocol 579 Controlling Bridging Access 579 Preparing for Routing over DDR 579 Configuring the Protocol for Routing and Access Control Associating the Protocol Access List with a Dialer Group Configuration Examples for Legacy DDR 584 Point-to-Point DDR Without Authentication Examples 584 Point-to-Point DDR with Authentication Examples 586

580 584


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Contents

Configuring Legacy DDR Spokes

589 589

DDR Spokes Configuration Task Flow

How to Configure DDR 590 Specifying the Interface 591 Enabling DDR on the Interface 592 Configuring the Interface to Place Calls 593 Specifying the Dial String for Synchronous Serial Interfaces 593 Specifying Chat Scripts and Dial Strings for Asynchronous Serial Interfaces 593 Configuring the Interface to Receive Calls 593 Configuring the Interface to Place and Receive Calls 594 Defining the Traffic to Be Authenticated 594 Configuring Access Control for Outgoing Calls 595 Configuring Access Control for Bridging 595 Controlling Bridging Access by Ethernet Type Codes 596 Permitting All Bridge Packets to Trigger Calls 596 Assigning the Interface to a Bridge Group 596 Configuring Access Control for Routing 596 Customizing the Interface Settings 597 Configuring Timers on the DDR Interface 597 Setting Dialer Interface Priority 598 Configuring a Dialer Hold Queue 599 Configuring Bandwidth on Demand 599 Disabling and Reenabling DDR Fast Switching 600 Configuring Dialer Redial Options 600 Sending Traffic over Frame Relay, X.25, or LAPB Networks 600 Configuring the Interface for Sending Traffic over a Frame Relay Network 601 Configuring the Interface for Sending Traffic over an X.25 Network 602 Configuring the Interface for Sending Traffic over a LAPB Network 603 Monitoring DDR Connections603

Configuration Examples for Legacy DDR Spoke 604 Legacy Dial-on-Demand Routing Example 604 Transparent Bridging over DDR Examples 605 DDR Configuration in an IP Environment Example Two-Way DDR for Novell IPX Example 606 Remote Configuration Example 606 Local Configuration Example 607 AppleTalk Configuration Example 608 DECnet Configuration Example 608 ISO CLNS Configuration Example 609

606


xxviii

Contents

XNS Configuration Example 609 Single Site Dialing Example 609 DTR Dialing Example 610 Hub-and-Spoke DDR for Asynchronous Interfaces and Authentication Example 611 Spoke Topology Configuration 611 Hub Router Configuration 612 Two-Way Reciprocal Client/Server DDR Without Authentication Example 613 Remote Configuration 613 Local Configuration 613 Frame Relay Support Example 614 Frame Relay Access with In-Band Dialing (V.25bis) and Static Mapping Example Frame Relay Access with ISDN Dialing and DDR Dynamic Maps Example 615 X.25 Support Example 615 LAPB Support Example 616 Configuring Legacy DDR Hubs DDR Issues617 618 617

614

DDR Hubs Configuration Task Flow

How to Configure DDR 619 Specifying the Interface 619 Enabling DDR on the Interface 620 Configuring the Interface to Place Calls Only 620 Defining the Dialing Destination 621 Specifying a Physical Interface to Use and Assigning It to a Dialer Rotary Group 621 Configuring the Interface to Receive Calls Only 622 Configuring the Interface for TACACS+ 623 Configuring the Interface for PPP Authentication 623 Specifying Physical Interfaces and Assigning Them to the Dialer Rotary Group 624 Configuring the Interface to Place and Receive Calls 624 Defining One or More Dialing Destinations 625 Defining the Traffic to Be Authenticated 626 Configuring Access Control for Outgoing Calls 626 Configuring Access Control for Bridging 626 Configuring Access Control for Routing 627 Customizing the Interface Settings 627 Configuring Timers on the DDR Interface 627 Setting Dialer Interface Priority 629 Configuring a Dialer Hold Queue 629 Configuring Bandwidth on Demand 629 Disabling and Reenabling DDR Fast Switching 630Cisco IOS Dial Technologies Configuration Guide

xxix

Contents

Configuring Dialer Redial Options 630 Sending Traffic over Frame Relay, X.25, or LAPB Networks 631 Configuring the Interface for Sending Traffic over a Frame Relay Network Configuring the Interface for Sending Traffic over an X.25 Network 633 Configuring the Interface for Sending Traffic over a LAPB Network 633 Monitoring DDR Connections634

631

Configuration Examples for Legacy DDR Hub 634 Transparent Bridging over DDR Examples 635 DDR Configuration in an IP Environment Example 636 AppleTalk Configuration Example 636 Banyan VINES Configuration Example 637 DECnet Configuration Example 637 ISO CLNS Configuration Example 638 XNS Configuration Example 638 Hub-and-Spoke DDR for Asynchronous Interfaces and Authentication Example 638 Spoke Topology Configuration 639 Hub Router Configuration 639 Single Site or Multiple Sites Dialing Configuration Example 641 Multiple Destinations Configuration Example 641 Dialer Interfaces and Dialer Rotary Groups Example 642 DDR Configuration Using Dialer Interface and PPP Encapsulation Example 642 Two-Way DDR with Authentication Example 643 Remote Configuration 644 Local Configuration 644 Frame Relay Support Examples 645 Frame Relay Access with In-Band Dialing and Static Mapping 645 Frame Relay Access with ISDN Dialing and DDR Dynamic Maps 645 Frame Relay Access with ISDN Dialing and Subinterfaces 646 X.25 Support Configuration Example 647 LAPB Support Configuration Example 647 Configuring Peer-to-Peer DDR with Dialer Profiles Configuring Peer-to-Peer DDR with Dialer Profiles Dialer Profiles Overview 651 New Dialer Profile Model Dialer Interface 653 Dialer Map Class 653 Dialer Pool 653 How to Configure Dialer ProfilesCisco IOS Dial Technologies Configuration Guide

651

652

655

xxx

Contents

Configuring a Dialer Profile 655 Configuring a Dialer Interface 655 Fancy Queueing and Traffic Shaping on Dialer Profile Interfaces Configuring a Map Class 656 Configuring the Physical Interfaces 657 Configuring Dialer Profiles for Routed Protocols 657 Configuring Dialer Profiles for AppleTalk 658 Configuring Dialer Profiles for Banyan VINES 658 Configuring Dialer Profiles for DECnet 658 Configuring Dialer Profiles for IP 659 Configuring Dialer Profiles for Novell IPX 659 Configuring XNS over DDR 660 Configuring Dialer Profiles for Transparent Bridging 660 Defining the Protocols to Bridge 661 Specifying the Bridging Protocol 661 Controlling Access for Bridging 661 Configuring an Interface for Bridging 662 Monitoring and Maintaining Dialer Profile Connections663

656

Configuration Examples Dialer Profiles 663 Dialer Profile with Inbound Traffic Filter Example 664 Dialer Profile for Central Site with Multiple Remote Sites Example 664 Dialer Profile for ISDN BRI Backing Up Two Leased Lines Example 665 Dynamic Multiple Encapsulations over ISDN Example 666 Verifying the Dynamic Multiple Encapsulations Feature 668 Dialer Map VRF-Aware for an MPLS VPN Feature Overview 671 Benefits 672 Related Documents Supported Platforms Prerequisites674 673 674 671

672


Configuration Tasks 674 Configuring Dialer Map VRF-Aware for an MPLS VPN 674 Verifying Dialer Map VRF-Aware for an MPLS VPN 675 Troubleshooting Tips 675 Monitoring and Maintaining Dialer Map VRF-Aware for an MPLS VPN Configuration Example Command Reference676 682 676


xxxi

Contents

Dialer Persistent

683

Feature Overview 683 Benefits 684 Restrictions 684 Related Documents Supported Platforms Prerequisites685 684

684


685

Configuration Tasks 685 Configuring Dialer Persistent 686 Shutting Down an Interface Configured for Dialer Persistence Verifying Dialer Persistent 687 Monitoring and Maintaining Dialer Persistence687

686

Configuration Examples 688 Standard Dialer Persistent Configuration Example 688 Dialer Persistent Plus Failed Connection Delays Configuration Example Command Reference Glossary690 691 689

688

Dialer Watch Connect Delay Feature Overview 691 Benefits 691 Related Documents Supported Platforms Prerequisites693 692

692


693

Configuration Tasks 693 Configuring a Delay Before Activating a Secondary Link 694 Configuring a Delay Before Disconnecting the Secondary Link Verifying Dialer Watch Connect Delay Configuration 694

694

Configuration Examples 695 Configuring a Delay Before Activating a Secondary Link Example 695 Configuring a Delay Before Disconnecting a Secondary Link Example 695 Command Reference696 697

PPPoE Client DDR Idle-Timer Contents697

Prerequisites for Using the PPPoE Client DDR Idle-Timer

697


xxxii

Contents

Information About the PPPoE Client DDR Idle-Timer DDR Functionality and the PPPoE Client 698

698

How to Configure the PPPoE Client DDR Idle-Timer 698 Configure the PPPoE Client DDR Idle-Timer on an ATM PVC Interface 699 What to Do Next 700 Configure the PPPoE Client DDR Idle-Timer on an Ethernet Interface 700 What to Do Next 701 Configure the Dialer Interface 701 Configuration Examples for PPPoE Client DDR Idle-Timer PPPoEoA Client Configuration Example 703 PPPoEoE Client Configuration Example 703 Additional References 705 Related Documents 705 Standards 705 MIBs 705 RFCs 706 Technical Assistance 706 Command Reference Redial Enhancements Feature Overview 707 Benefits 708 Restrictions 708 Related Documents Supported Platforms708 709 706 707 703

708


Configuration Tasks 709 Configuring Redial Options 709 Configuring the Dialer to Wait for a Line Protocol Verifying Redial Configuration 710 Configuration Examples 713 Dialer Redial Example 713 Dialer Wait-for-Line-Protocol Example Command Reference713 715

709

713

Rotating Through Dial Strings Feature Overview 715 Benefits 715 Related Documents

716


xxxiii

Contents

Supported Platforms Prerequisites717

716 717

Supported Standards, MIBs, and RFCs Configuration Tasks 717 Configuring the Order of Dial Strings Verifying Dial String Order 718 Troubleshooting Tips 719

718

Monitoring and Maintaining the Rotating Through Dial Strings Feature Configuration Examples 719 Legacy Dialer with Multiple Dial Strings Example 719 Dialer Profile Configuration with Multiple Dial Strings Example Command Reference Configuring Dialer CEF Dialer CEF Contents723 723 723 720

719

719

Restrictions for Dialer CEF

Information About Dialer CEF 723 DDR-Dependent Implementation Decisions Dialer Profiles 724 Legacy DDR 724 Benefits 724 Related Documents 725 Supported Platforms Configuration Tasks725 726

724

Supported Standards, MIBs, and RFCs726

Monitoring and Maintaining Dialer CEF Interfaces Configuration Examples Command Reference726 727

726

CEF Support for Dialer Profiles on Cisco 7500 Routers Contents729

729

Restrictions for CEF Support for Dialer Profiles on Cisco 7500 Routers Information About CEF Support for Dialer Profiles on Cisco 7500 Routers CEF Switching Across Dialer Interfaces 730

730 730

How to Implement Dialer CEF Support on Cisco 7500 Routers with RSP 731 Verifying that CEF Support for Dialer Profiles on Cisco 7500 Routers Feature Is OperationalCisco IOS Dial Technologies Configuration Guide

731

xxxiv

Contents

Configuration Examples for CEF Support for Dialer Profiles on Cisco 7500 Routers Recording CEF Events for Dialer Interface: Example 732 Displaying CEF Adjacency Table for Dialer Interface: Example 733 Displaying CEF Switching Status on IP Dialer Interface: Example 733 Additional References 734 Related Documents 734 Standards 734 MIBs 734 RFCs 734 Technical Assistance 735 Command Reference735 737 737

732

Configuring Snapshot Routing Snapshot Routing Overview

How to Configure Snapshot Routing 738 Configuring the Client Router 739 Configuring the Server Router 740 Monitoring and Maintaining DDR Connections and Snapshot Routing Configuration Examples for Snapshot Routing PART 6: DIAL-BACKUP CONFIGURATION Configuring Dial Backup for Serial Lines Backup Serial Interface Overview745 745 740 740

How to Configure Dial Backup 746 Specifying the Backup Interface 747 Defining the Traffic Load Threshold 747 Defining Backup Line Delays 748 Configuration Examples for Dial Backup for Serial Interfaces 748 Dial Backup Using an Asynchronous Interface Example 748 Dial Backup Using DDR and ISDN Example 749 Dial Backup Service When the Primary Line Reaches Threshold Example Dial Backup Service When the Primary Line Exceeds Threshold Example Dial Backup Service When the Primary Line Goes Down Example 750 Configuring Dial Backup with Dialer Profiles Configuring Dial Backup with Dialer Profiles Dial Backup with Dialer Profiles Overview753 753

749 749


xxxv

Contents

How to Configure Dial Backup with Dialer Profiles 753 Configuring a Dialer Interface 754 Configuring a Physical Interface to Function As Backup Configuring Interfaces to Use a Backup Interface 754

754

Configuration Example of Dialer Profile for ISDN BRI Backing Up Two Leased Lines ISDN Backup in MPLS Core Contents757 758 758 757

755

Prerequisites for ISDN Backup in MPLS Core Restrictions for ISDN Backup in MPLS Core

Information About ISDN Backup in MPLS Core 758 How ISDN Backup in MPLS Core Works 758 Benefits of ISDN Backup in MPLS Core Feature 758 How to Configure ISDN Backup in MPLS Core 758 Configuring Primary Interface for Backup 759 Configuring the Dialer Profile as Backup Interface 759 Verifying the ISDN Backup for MPLS Feature 761 Configuration Examples for ISDN Backup in MPLS Core ISDN Backup for MPLS Example 761 Additional References 763 Related Documents 763 Standards 763 MIBs 763 RFCs 763 Technical Assistance 763 Command Reference Glossary765 764 761

Configuring Dial Backup Using Dialer Watch Configuring Dial Backup Using Dialer Watch Dialer Watch Overview769 769

How to Configure Dialer Backup with Dialer Watch 770 Determining the Primary and Secondary Interfaces 771 Determining the Interface Addresses and Networks to Watch Configuring the Interface to Perform DDR Backup 771 Creating a Dialer List 771 Setting the Disable Timer on the Backup Interface 771 Configuration Examples for Dialer WatchCisco IOS Dial Technologies Configuration Guide

771

772

xxxvi

Contents

Dialer Watch Configuration Example Prior to Cisco IOS Release 12.3(11)T 773 Dialer Watch Configuration Example After Cisco IOS Release 12.3(11)T 777 Dialer Watch Connect Delay Feature Overview 781 Benefits 781 Related Documents Supported Platforms Prerequisites783 782 783 781

782


Configuration Tasks 783 Configuring a Delay Before Activating a Secondary Link 784 Configuring a Delay Before Disconnecting the Secondary Link Verifying Dialer Watch Connect Delay Configuration 784

784

Configuration Examples 785 Configuring a Delay Before Activating a Secondary Link Example 785 Configuring a Delay Before Disconnecting a Secondary Link Example 785 Command Reference786 787

VRF Aware Dialer Watch Contents787

Information About VRF Aware Dialer Watch 788 How VRF Aware Dialer Watch Works 788 VRF Aware Dialer Watch Typical Scenario 789 How to Configure VRF Aware Dialer Watch 789 Configuring the Dialer Watch List 789 Configuration Examples for VRF Aware Dialer Watch 791 VRF Aware Dialer Watch on a Legacy Dialer Configuration: Example 791 VRF Aware Dialer Watch on a Dialer Rotary Group: Example 791 VRF Aware Dialer Watch on a Dialer Profile Configuration: Example 792 Additional References 792 Related Documents 792 Standards 793 MIBs 793 RFCs 793 Technical Assistance 793 Command Reference793


xxxvii

Contents

Reliable Static Routing Backup Using Object Tracking Contents795

795

Prerequisites for Reliable Static Routing Backup Using Object Tracking Restrictions for Reliable Static Routing Backup Using Object Tracking

796 796

Information About Reliable Static Routing Backup Using Object Tracking 796 Reliable Static Routing Backup Using Object Tracking 796 Cisco IOS IP SLAs 797 Benefits of Reliable Static Routing Backup Using Object Tracking 797 How to Configure Reliable Static Routing Backup Using Object Tracking 797 Configuring the Primary Interface for Reliable Static Routing Backup Using Object Tracking 798 Configuring the Primary Interface for PPPoE 798 Configuring the Primary Interface for DHCP 799 Configuring the Primary Interface for Static Routing 800 Configuring the Backup Interface for Reliable Static Routing Backup Using Object Tracking 801 Configuring Network Monitoring with Cisco IOS IP SLAs for Reliable Static Routing Backup Using Object Tracking 802 Configuring the Routing Policy for Reliable Static Routing Backup Using Object Tracking 804 Configuring a Routing Policy for PPPoE 804805

Configuring a Routing Policy for DHCP 806 Configuring a Routing Policy for Static Routing 807 Configuring the Default Route for the Primary Interface Using Static Routing 811 Configuring a Floating Static Default Route on the Secondary Interface 812 Verifying the State of the Tracked Object for Reliable Static Routing Backup Using Object Tracking 812 Configuration Examples for Reliable Static Routing Backup Using Object Tracking 813 Configuring Reliable Static Routing Backup Using Object Tracking: PPPoE Example 813 Configuring Reliable Static Routing Backup Using Object Tracking: DHCP Example 814 Configuring Reliable Static Routing Backup Using Object Tracking: Static Routing Examples Verifying the State of the Tracked Object: Example 815 Additional References 816 Related Documents 816 Standards 816 MIBs 817 RFCs 817 Technical Assistance 817 Command Reference817

814


xxxviii

Contents

PART 7: DIAL-RELATED ADDRESSING SERVICES Configuring Cisco Easy IP Cisco Easy IP Overview821 821

How to Configure Cisco Easy IP 824 Defining the NAT Pool 825 Configuring the LAN Interface 825 Defining NAT for the LAN Interface 825 Configuring the WAN Interface 825 Enabling PPP/IPCP Negotiation 826 Defining NAT for the Dialer Interface 826 Configuring the Dialer Interface 826 Timeout Considerations 827 Configuration Examples for Cisco Easy IP827

PART 8: VIRTUAL TEMPLATES, PROFILES, AND NETWORKS Configuring Virtual Template Interfaces831

Virtual Template Interface Service Overview 832 Features that Apply Virtual Template Interfaces 833 Selective Virtual Access Interface Creation 833 How to Configure a Virtual Template Interface834 834 834

Monitoring and Maintaining a Virtual Access Interface Configuration Examples for Virtual Template Interface Basic PPP Virtual Template Interface 835 Virtual Template Interface 835 Selective Virtual Access Interface 835 RADIUS Per-User and Virtual Profiles 836 TACACS+ Per-User and Virtual Profiles 836 Configuring Virtual Profiles839

Virtual Profiles Overview 839 DDR Configuration of Physical Interfaces 840 Multilink PPP Effect on Virtual Access Interface Configuration 841 Interoperability with Other Features That Use Virtual Templates 841 How Virtual Profiles WorkFour Configuration Cases 842 Case 1: Virtual Profiles Configured by Virtual Template 843 Case 2: Virtual Profiles Configured by AAA 843 Case 3: Virtual Profiles Configured by Virtual Template and AAA Configuration

844


xxxix

Contents

Case 4: Virtual Profiles Configured by AAA, and a Virtual Template Defined by Another Application 845 How to Configure Virtual Profiles 846 Configuring Virtual Profiles by Virtual Template 846 Creating and Configuring a Virtual Template Interface 846 Specifying a Virtual Template Interface for Virtual Profiles 847 Configuring Virtual Profiles by AAA Configuration 847 Configuring Virtual Profiles by Both Virtual Template and AAA Configuration Creating and Configuring a Virtual Template Interface 848 Specifying Virtual Profiles by Both Virtual Templates and AAA 848 Troubleshooting Virtual Profile Configurations849

847

Configuration Examples for Virtual Profiles 849 Virtual Profiles Configured by Virtual Templates 849 Virtual Profiles Configured by AAA Configuration 851 Virtual Profiles Configured by Virtual Templates and AAA Configuration 852 Virtual Profiles Configured by AAA Plus a VPDN Virtual Template on a VPDN Home Gateway PART 9: PPP CONFIGURATION Configuring Asynchronous SLIP and PPP Configuring Asynchronous SLIP and PPP861

854

Asynchronous SLIP and PPP Overview 861 Responding to BOOTP Requests 862 Asynchronous Network Connections and Routing Asynchronous Interfaces and Broadcasts 863

862

How to Configure Asynchronous SLIP and PPP 863 Configuring Network-Layer Protocols over PPP and SLIP Configuring IP and PPP 864 Configuring IPX and PPP 864 Configuring AppleTalk and PPP 866 Configuring IP and SLIP 867 Configuring Asynchronous Host Mobility 867 Making Additional Remote Node Connections 868 Creating PPP Connections 868 Making SLIP Connections 869 Configuring Remote Access to NetBEUI Services 869 Configuring Performance Parameters 870 Compressing TCP Packet Headers 870

864


xl

Contents

Setting the TCP Connection Attempt Time 871 Compressing IPX Packet Headers over PPP 871 Enabling Fast Switching 872 Controlling Route Cache Invalidation 873 Customizing SLIP and PPP Banner Messages 873 Configuration Examples for Asynchronous SLIP and PPP 874 Basic PPP Configurations Examples 874 Remote Node NetBEUI Examples 875 Remote Network Access Using PPP Basic Configuration Example 876 Remote Network Access Using PPP and Routing IP Example 877 Remote Network Access Using a Leased Line with Dial-Backup and PPP Example Multilink PPP Using Multiple Asynchronous Interfaces Example 879 Optimized PPP Negotiation Feature Overview 881 Benefits 882 Related Documents Supported Platforms882 882 881

878

882


Configuration Tasks 883 Configuring the LCP and IPCP Predictive States Verifying LCP and IPCP Predictive States 883 Troubleshooting Tips 884

883

Monitoring and Maintaining LCP and IPCP Predictive States

885

Configuration Examples 885 Configuration with a Wireless Dialup Client Example 885 Dialup Connection with Router as Client Example 886 Command Reference887

Configuring Media-Independent PPP and Multilink PPP Configuring Media-Independent PPP and Multilink PPP PPP Encapsulation Overview891 891

Configuring PPP and MLP 892 Enabling PPP Encapsulation 893 Enabling CHAP or PAP Authentication 893 Enabling Link Quality Monitoring 895 Configuring Compression of PPP Data 896 Software Compression 896


xli

Contents

Hardware-Dependent Compression 896 Configuring Microsoft Point-to-Point Compression 897 MPPC Restrictions 898 Configuring MPPC 898 Configuring IP Address Pooling 899 Peer Address Allocation 899 Precedence Rules 900 Interfaces Affected 900 Choosing the IP Address Assignment Method 900 Defining the Global Default Address Pooling Mechanism Controlling DHCP Network Discovery 902 Configuring IP Address Assignment 902 Configuring PPP Reliable Link 903 Troubleshooting PPP 904 Disabling or Reenabling Peer Neighbor Routes 904 Configuring PPP Half-Bridging 904 Configuring Multilink PPP 906 Configuring MLP on Synchronous Interfaces 906 Configuring MLP on Asynchronous Interfaces 907 Configuring MLP on a Single ISDN BRI Interface 907 Configuring MLP on Multiple ISDN BRI Interfaces 908 Configuring MLP Using Multilink Group Interfaces 910 Changing the Default Endpoint Discriminator 911 Configuring MLP Interleaving and Queueing Configuring MLP Interleaving 912911

901

Configuring MLP Inverse Multiplexer and Distributed MLP 913 Enabling Distributed CEF Switching 915 Creating a Multilink Bundle 915 Assigning an Interface to a Multilink Bundle 915 Disabling PPP Multilink Fragmentation 916 Verifying the MLP Inverse Multiplexer Configuration 916 Monitoring and Maintaining PPP and MLP Interfaces Configuration Examples for PPP and MLP 916 CHAP with an Encrypted Password Examples 917 User Maximum Links Configuration Example 917 MPPC Interface Configuration Examples 918 IP Address Pooling Example 919 DHCP Network Control Example 921 PPP Reliable Link Examples 921916


xlii

Contents

MLP Examples 922 MLP on Synchronous Serial Interfaces Example 922 MLP on One ISDN BRI Interface Example 924 MLP on Multiple ISDN BRI Interfaces Example 925 MLP Using Multilink Group Interfaces over ATM Example 925 Changing the Default Endpoint Discriminator Example 926 MLP Interleaving and Queueing for Real-Time Traffic Example 926 T3 Controller Configuration for an MLP Multilink Inverse Multiplexer Example Multilink Interface Configuration for Distributed MLP Example 927 Customer Profile Idle Timer Enhancements for Interesting Traffic Feature Overview 929 Benefits 930 Restrictions 930 Supported Platforms930 931 929

927


Configuration Tasks 931 Configuring an RPM Template to Accept Dialer Interface Timers 931 Configuring a PPP Idle Timer Based on Interesting IP Traffic 932 Configuring the Idle Timer in a RADIUS Profile 932 Verifying the Customer Profile Idle Timer Enhancements for Interesting Traffic Troubleshooting Tips 933 Configuration Examples 934 Two Templates with Different Dialer Idle Timer Settings Example 934 Resetting the Dialer Idle Timer with Interesting Traffic Example 935 Network Access Server Extended Configuration Example 935 Command Reference Glossary939 941 938

932

Monitoring and Maintaining the Customer Profile Idle Timer Enhancements for Interesting Traffic

934

Multiclass Multilink PPP

Feature Overview 941 Benefits 942 Restrictions 942 Related Features and Technologies Related Documents 942 Supported Platforms Prerequisites944 942

942


943


xliii

Contents

Configuration Tasks 944 Configuring MLP LFI on a Bundle 944 Configuring MCMP on a Member Link 945 Verifying MCMP 945 Configuration Examples 946 Configuring MCMP on a Dialer Example 946 MCMP and MLP Interleaving and Queueing for Real-Time Traffic Examples Command Reference947 949

946

PPP/MLP MRRU Negotiation Configuration Contents949

Prerequisites for PPP/MLP MRRU Negotiation Configuration Restrictions for PPP/MLP MRRU Negotiation Configuration Information About PPP/MLP MRRU Negotiation Configuration MRRU Negotiation on MLP 950 Advertising of a Specific MRRU Value 951 Peer MRRU Negotiation 951

949 950 950

How to Configure PPP/MLP MRRU Negotiation Configuration 951 Configuring PPP/MLP MRRU Negotiation Configuration on Virtual Templates 952 Troubleshooting Tips 954 Configuring PPP/MLP MRRU Negotiation Configuration on Multilink Groups 954 Troubleshooting Tips 956 Configuring PPP/MLP MRRU Negotiation Configuration on Dialer Interfaces 957 Troubleshooting Tips 958 Configuration Examples for PPP/MLP MRRU Negotiation Configuration 959 PPP/MLP MRRU Negotiation Configuration on Virtual Templates: Example 959 PPP/MLP MRRU Negotiation Configuration on Multilink Groups: Example 959 PPP/MLP MRRU Negotiation Configuration on Dialer Interfaces: Example 960 Additional References 960 Related Documents 960 Standards 960 MIBs 960 RFCs 961 Technical Assistance 961 Command Reference961

Troubleshooting Enhancements for Multilink PPP over ATM Link Fragmentation and Interleaving 963 Contents963


xliv

Contents

How to Troubleshoot Multilink PPP over ATM LFI Troubleshooting Multilink PPP over ATM LFI Prerequisites 964 Examples 965 Additional References 965 Related Documents 965 MIBs 966 Technical Assistance 966 Command Reference966 967

963 964

Implementing Multichassis Multilink PPP Contents967

Prerequisites for Implementing Multichassis Multilink PPP Restrictions for Implementing Multichassis Multilink PPP Information About Multichassis Multilink PPP 968 Multichassis Multilink PPP 968 Stack Group Operation 969 Stack Groups with an Offload Server 969 Stack Group Bidding Protocol 970 Layer 2 Tunnel Protocols Used with MMP 971

967 968

How to Implement Multichassis Multilink PPP 971 Configuring a Stack Group 971 Restrictions 971 What to Do Next 973 Verifying and Troubleshooting Stack Group Configuration 973 What to Do Next 975 Configuring MMP 975 Configuring MMP on a Nondialer Interface 976 Configuring MMP on an Explicitly Defined Dialer Interface with a T1 Controller 978 Configuring MMP on an Explicitly Defined Dialer Interface with an E1 Controller 982 Configuring MMP on a Native Dialer Interface 986 Verifying and Troubleshooting MMP Configurations 988 Verifying the LCP and NCP States 988 Debugging Layer 2 Tunnel Protocols Used with MMP 989 Configuration Examples for Multichassis Multilink PPP 990 Configuring a Basic Stack Group: Example 990 Configuring an L2TP Stack Group with an Offload Server: Example 991 Configuring MMP on a Nondialer Interface: Example 991 Configuring MMP on an Explicitly Defined Dialer Interface with a T1 Controller: Example

992


xlv

Contents

Configuring MMP on an Explicitly Defined Dialer Interface with an E1 Controller: Example Configuring MMP on a Native Dialer Interface: Example 993 Where to Go Next993

992

Additional References 993 Related Documents 993 Standards 994 MIBs 994 RFCs 994 Technical Assistance 994 Feature Information for Multichassis Multilink PPP994

PART 10: CALLBACK AND BANDWIDTH ALLOCATION CONFIGURATION Configuring Asynchronous Callback Asynchronous Callback Overview999 999

How to Configure Asynchronous Callback 1000 Configuring Callback PPP Clients 1000 Accepting Callback Requests from RFC-Compliant PPP Clients 1000 Accepting Callback Requests from Non-RFC-Compliant PPP Clients Placing Themselves in Answer Mode 1001 Enabling PPP Callback on Outgoing Lines 1001 Enabling Callback Clients That Dial In and Connect to the EXEC Prompt 1002 Configuring Callback ARA Clients 1003 Configuration Examples for Asynchronous Callback 1003 Callback to a PPP Client Example 1004 Callback Clients That Connect to the EXEC Prompt Example Callback to an ARA Client Example 1005 Configuring PPP Callback1007 1007

1005

PPP Callback for DDR Overview

How to Configure PPP Callback for DDR 1008 Configuring a Router As a Callback Client 1008 Configuring a Router As a Callback Server 1009 MS Callback Overview1009 1010 1010

How to Configure MS Callback

Configuration Examples for PPP Callback Configuring ISDN Caller ID Callback

1011

ISDN Caller ID Callback Overview 1012 Callback After the Best Match Is DeterminedCisco IOS Dial Technologies Configuration Guide

1012

xlvi

Contents

Legacy DDR 1012 Dialer Profiles 1013 Timing and Coordinating Callback on Both Sides

1013

How to Configure ISDN Caller ID Callback 1013 Configuring ISDN Caller ID Callback for Legacy DDR 1013 Configuring ISDN Caller ID Callback for Dialer Profiles 1014 Monitoring and Troubleshooting ISDN Caller ID Callback1015

Configuration Examples for ISDN Caller ID Callback 1015 Best Match System Examples 1015 Best Match Based on the Number of Dont Care Characters Example Best Match with No Callback Configured Example 1016 No Match Configured Example 1016 Simple Callback Configuration Examples 1016 ISDN Caller ID Callback with Dialer Profiles Examples 1017 ISDN Caller ID Callback with Legacy DDR Example 1018 Individual Interface Example 1018 Dialer Rotary Group Example 1019 Configuring BACP1021

1016

BACP Overview 1022 BACP Configuration Options

1022

How to Configure BACP 1023 Enabling BACP 1024 Modifying BACP Passive Mode Default Settings Configuring Active Mode BACP 1025 Troubleshooting BACP1027

1025

Monitoring and Maintaining Interfaces Configured for BACP

1026

Configuration Examples for BACP 1027 Basic BACP Configurations 1027 Dialer Rotary Group with Different Dial-In Numbers 1028 Passive Mode Dialer Rotary Group Members with One Dial-In Number PRI Interface with No Defined PPP BACP Number 1030 BRI Interface with No Defined BACP Number 1030

1029


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Contents

PART 11: DIAL ACCESS SPECIALIZED FEATURES Configuring Large-Scale Dial-Out Configuring Large-Scale Dial-Out Large-Scale Dial-Out Overview 1035 Next Hop Definition 1037 Static Routes 1037 Stack Groups 1038 How to Configure Large-Scale Dial-Out 1038 Complying with Large-Scale Dial-Out Prerequisites 1038 Establishing the Route to the Remote Network 1039 Enabling AAA and Static Route Download 1039 Enabling Access to the AAA Server 1040 Enabling Reverse DNS 1040 Enabling SGBP Dial-Out Connection Bidding 1041 Defining a User Profile 1041 Monitoring and Maintaining the Large-Scale Dial-Out Network1046 1035

Configuration Examples for Large-Scale Dial-Out 1046 Stack Group and Static Route Download Configuration Example 1046 User Profile on an Ascend RADIUS Server for NAS1 Example 1051 Asynchronous Dialing Configuration Examples 1052 Asynchronous Dialing Example 1052 Asynchronous and Synchronous Dialing Example 1052 Dial-Out DS0 Level Trunk Group Contents1055 1055 1056 1055

Prerequisites for Dial-Out DS0 Level Trunk Groups Restrictions for Dial-Out DS0 Level Trunk Groups

Information About Dial-Out DS0 Level Trunk Groups 1056 Dial-Out DS0 Level Trunk Group Outbound Call Control 1056 Dial-Out DS0 Level Trunk Group Aggregation Requirement 1057 Structure and Relationship of a Dial-Out DS0 Level Trunk Group 1057 How to Configure Dial-Out DS0 Level Trunk Groups and Enable for DDR 1059 Configuring Dial-Out DS0 Level Trunk Groups on a DS1 Configured for CAS Signaling Configuring Dial-Out DS0 Level Trunk Groups on an NFAS Member 1060 Configuring Dial-Out DS0 Level Trunk Groups on DS1 Configured for ISDN PRI 1062 Associating DS0 Trunk Groups with Dialer 1063 What to Do Next 1066Cisco IOS Dial Technologies Configuration Guide

1059

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Contents

Configuration Examples for Dial-Out DS0 Level Trunk Groups 1067 Configure a Dial-Out DS0 Level Trunk Group on a DS1 Configured for CAS: Example 1067 Configure Multiple Dial-Out DS0 Level Trunk Groups on a PRI Trunk: Example 1067 Configure Dial-Out DS0 Level Trunk Groups on an NFAS Group: Example 1067 Configure Dial-Out DS0 Level Trunk Groups in a Dialer Rotary Group: Examples 1068 Associating a DS0 Trunk Group with a Dialer for DDR: Example 1070 Additional References 1070 Related Documents 1070 Standards 1070 MIBs 1070 RFCs 1071 Technical Assistance 1071 Command Reference1071 1073

L2TP Large-Scale Dial-Out

Feature Overview 1073 Benefits 1075 Related Features and Technologies Supported Platforms1075

1075


1076

Configuration Tasks 1076 Configuring the LNS to Request Dial-Out 1076 Configuring a LAC to Accept Dial-Out 1079 Verifying L2TP Large-Scale Dial-Out 1080 Monitoring and Maintaining L2TP Large-Scale Dial-Out Configuration Examples 1084 LNS Configured to Request Dial-Out Example 1085 LAC Configured to Accept Dial-Out Example 1085 Command Reference1086 1087 1084

L2TP Large-Scale Dial-Out per-User Attribute via AAA Contents1087

Restrictions for Using L2TP Large-Scale Dial-Out per-User Attribute via AAA

1088

Information About L2TP Large-Scale Dial-Out per-User Attribute via AAA 1088 How the L2TP Large-Scale Dial-Out per-User Attribute via AAA Feature Works How to Configure L2TP Large-Scale Dial-Out per-User Attribute via AAA Configuring the VPDN Group on the LNS 1089 Prerequisites 1089 Restrictions 10891089

1088


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Contents

What to Do Next 1091 Verifying the Configuration on the Virtual Access Interface 1091 Troubleshooting the Configuration on the Virtual Access Interface

1092 1093

Configuration Examples for L2TP Large-Scale Dial-Out per-User Attribute via AAA LNS Configuration Example 1094 Per-User AAA Attributes Profile Example 1094 Virtual Access Interface Configuration Verification Example 1094 Virtual Access Interface Configuration Troubleshooting Example 1095 Additional References 1096 Related Documents 1096 Standards 1097 MIBs 1097 RFCs 1097 Technical Assistance 1097 Command Reference1098 1099

Large-Scale Dial-Out (LSDO) VRF Aware Feature Overview 1099 Benefits 1100 Restrictions 1100 Related Documents 1101 Supported Platforms Prerequisites1102 1102 1101 1101


Monitoring and Maintaining LSDO VRF Aware Configuration Examples Command Reference Glossary1104 1103 1103

1102

Modem Script and System Script Support in Large-Scale Dial-Out Feature Overview 1105 Benefits 1105 Related Documents 1106 Supported Platforms1106 1106

1105

Supported Standards, MIBs, and RFCs Configuration Tasks 1107 Creating the Dial-Out Profile 1107 Creating the Chat Script 1107Cisco IOS Dial Technologies Configuration Guide

l

Contents

Verifying Modem and System Chat Scripts with Large-Scale Dial-Out Monitoring and Maintaining Large-Scale Dial-Out Sessions Configuration Examples 1108 Dial-Out Profile Examples 1108 Chat Script Example 1109 Verification Example 1109 Command Reference Appendix Glossary1110 1111 1113 1109 1108

1108

Peer Pool Backup Contents1113

Prerequisites for Peer Pool Backup

1113

Information About Peer Pool Backup 1114 Alternate Sources for IP Address Pools 1114 Backup Pools to Prevent Local Pool Exhaustion 1114 Limit Loading of Dynamic Pools 1114 Peer Pool Backup Feature Interface Compatibility 1114 How to Configure Peer Pool Backup 1115 Configuring IP Pools 1115 Suppressing Dynamic Pool Load Attempts 1116 Verifying Peer Pool Backup 1117 Monitoring and Maintaining Peer Pool Backup

1119

Configuration Examples for Peer Pool Backup 1119 ISDN Pool Backup Configuration: Example 1119 DSL Static Pool Backup Configuration: Example 1120 Pool Backup with Local Restrictions Configuration: Example Additional References 1122 Related Documents 1122 Standards 1122 MIBs 1122 RFCs 1122 Technical Assistance 1122 Command Reference1123 1125

1121

Configuring per-User Configuration

Per-User Configuration Overview 1125 General Operational Processes 1126 Operational Processes with IP Address Pooling

1127


li

Contents

Deleting Downloaded Pools 1128 Supported Attributes for AV Pairs 1129 How to Configure a AAA Server for Per-User Configuration 1131 Configuring a Freeware TACACS Server for Per-User Configuration 1132 Configuring a CiscoSecure TACACS Server for Per-User Configuration 1132 Configuring a RADIUS Server for Per-User Configuration 1133 Monitoring and Debugging Per-User Configuration Settings1134

Configuration Examples for Per-User Configuration 1134 TACACS+ Freeware Examples 1134 IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI 1135 IPX Per-User SAP Filters Using IPXWAN and Virtual Profiles by a Synchronous Interface RADIUS Examples 1138 IP Access Lists and Static Routes Using Virtual Profiles over ISDN BRI 1138 IPX Per-User SAP Filters Using IPXWAN and Virtual Profiles by a Synchronous Interface Configuring Resource Pool Management1147

1137

1144

RPM Overview 1147 Components of Incoming and Outgoing Call Management 1148 Customer Profile Types 1149 DNIS Groups 1151 CLID Groups 1151 Call Types 1151 Resource Groups 1152 Resource Services 1152 VPDN Groups 1153 VPDN Profiles 1153 Call Treatments 1153 Details on RPM Call Processes 1154 Accounting Data 1156 Data over Voice Bearer Services 1156 Call Discriminator Profiles 1157 Incoming Call Preauthentication 1158 RPM Standalone Network Access Server 1159 Call Processing 1160 Base Session and Overflow Session Limits 1160 VPDN Session and Overflow Session Limits 1161 VPDN MLP Bundle and Links-per-Bundle Limits 1162 VPDN Tunnel Limits 1162 RPM Using the Cisco RPMS 1165 Resource Manager Protocol 1165Cisco IOS Dial Technologies Configuration Guide

lii

Contents

Direct Remote Services 1166 RPM Process with RPMS and SS7 1166 Additional Information About Cisco RPM 1167 How to Configure RPM 1167 Enabling RPM 1168 Configuring DNIS Groups 1169 Creating CLID Groups 1170 Configuring Discriminator Profiles 1170 Configuring Resource Groups 1172 Configuring Service Profiles 1172 Configuring Customer Profiles 1173 Configuring Default Customer Profiles 1173 Configuring Customer Profiles Using Backup Customer Profiles Configuring Customer Profiles for Using DoVBS 1174 Configuring a Customer Profile Template 1174 Typical Template Configuration 1175 Verifying Template Configuration 1175 Placing the Template in the Customer Profile 1176 Configuring AAA Server Groups 1177 Configuring VPDN Profiles 1177 Configuring VPDN Groups 1178 Counting VPDN Sessions by Using VPDN Profiles 1179 Limiting the Number of MLP Bundles in VPDN Groups 1181 Configuring Switched 56 over CT1 and RBS 1182 Verifying RPM Components 1183 Verifying Current Calls 1183 Verifying Call Counters for a Customer Profile 1183 Clearing Call Counters 1184 Verifying Call Counters for a Discriminator Profile 1184 Verifying Call Counters for a Resource Group 1184 Verifying Call Counters for a DNIS Group 1185 Verifying Call Counters for a VPDN Profile 1185 Verifying Load Sharing and Backup 1185 Troubleshooting RPM 1186 Resource-Pool Component 1187 Successful Resource Pool Connection Dialer Component 1188 Resource Group Manager 1188 Signaling Stack 1188

1173

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liii

Contents

AAA Component 1189 VPDN Component 1189 Troubleshooting DNIS Group Problems 1189 Troubleshooting Call Discriminator Problems 1190 Troubleshooting Customer Profile Counts 1190 Troubleshooting Resource Group Counts 1190 Troubleshooting VPDN 1190 Troubleshooting RPM/VPDN Connection 1191 Troubleshooting Customer/VPDN Profile 1191 Troubleshooting VPDN Profile Limits 1192 Troubleshooting VPDN Group Limits 1192 Troubleshooting VPDN Endpoint Problems 1193 Troubleshooting RPMS 1193 Configuration Examples for RPM 1194 Standard Configuration for RPM Example 1195 Customer Profile Configuration for DoVBS Example 1196 DNIS Discriminator Profile Example 1196 CLID Discriminator Profile Example 1197 Direct Remote Services Configuration Example 1200 VPDN Configuration Example 1201 VPDN Load Sharing and Backing Up Between Multiple HGW/LNSs Example Configuring Wholesale Dial Performance Optimization How to Configure Automatic Command Execution1206 1206 1207 1205 1205

1202

Wholesale Dial Performance Optimization Feature Overview How to Configure TCP Clear Performance Optimization

Verifying Configuration of TCP Clear Performance Optimization PART 12: DIAL ACCESS SCENARIOS Dial Networking Business Applications Common Dial Applications1214 1211 1211

Dial Networking for Service Providers and Enterprises IP Address Strategies 1215 Choosing an Addressing Scheme Classic IP Addressing 1215 Cisco Easy IP 1216

1215

Enterprise Dial Scenarios and Configurations Remote User DemographicsCisco IOS Dial Technologies Configuration Guide

1219

1219

liv

Contents

Demand and Scalability

1220

Remote Offices and Telecommuters Dialing In to a Central Site 1220 Network Topologies 1220 Dial-In Scenarios 1221 Cisco 1604 Remote Office Router Dialing In to a Cisco 3620 Access Router 1222 Remote Office Router Dialing In to a Cisco 3620 Router 1225 Cisco 700 Series Router Using Port Address Translation to Dial In to a Cisco AS5300 Access Server 1228 Cisco 3640 Central Site Router Configuration to Support ISDN and Modem Calls 1232 Cisco AS5300 Central Site Configuration Using Remote Security 1234 Bidirectional Dial Between Central Sites and Remote Offices 1237 Dial-In and Dial-Out Network Topology 1237 Dialer Profiles and Virtual Profiles 1238 Running Access Server Configurations 1240 Cisco AS5300 Access Server Configuration with Dialer Profiles 1241 Cisco 1604 ISDN Router Configuration with Dialer Profiles 1246 Cisco 1604 Router Asynchronous Configuration with Dialer Profiles 1247 Cisco AS5300 Access Server Configuration Without Dialer Profiles 1248 Cisco 1604 ISDN Router Configuration Without Dialer Profiles 1250 Cisco 1604 Router Asynchronous Configuration Without Dialer Profiles 1251 Large-Scale Dial-In Configuration Using Virtual Profiles 1252 Telecommuters Dialing In to a Mixed Protocol Environment Description 1253 Enterprise Network Topology 1255 Mixed Protocol Dial-In Scenarios 1256 Cisco 7200 #1 Backbone Router 1257 Cisco 7200 #2 Backbone Router 1258 Cisco AS5300 Universal Access Server 1259 Telco and ISP Dial Scenarios and Configurations1263 1252

Small- to Medium-Scale POPs 1263 Individual Remote PCs Using Analog Modems 1264 Network Topology 1264 Running Configuration for ISDN PRI 1264 Running Configuration for Robbed-Bit Signaling 1266 Individual PCs Using ISDN Terminal Adapters 1268 Network Topology 1268 Terminal Adapter Configuration Example 1269 Mixture of ISDN and Analog Modem Calls 1271 Combination of Modem and ISDN Dial-In Configuration Example

1271


lv

Contents

Large-Scale POPs 1273 Scaling Considerations 1273 How Stacking Works 1274 A Typical Multilink PPP Session 1274 Using Multichassis Multilink PPP 1275 Setting Up an Offload Server 1276 Using the Stack Group Bidding Protocol 1277 Using L2F 1278 Stack Group of Access Servers Using MMP with an Offload Processor Examples Cisco Access Server #1 1278 Cisco Access Server #2 1280 Cisco Access Server #3 1282 Cisco 7206 as Offload Server 1285 RADIUS Remote Security Examples 1286 User Setup for PPP 1287 User Setup for PPP and Static IP Address 1287 Enabling Router Dial-In 1287 User Setup for SLIP 1287 User Setup for SLIP and Static IP Address 1288 Using Telnet to connect to a UNIX Host 1288 Automatic rlogin to UNIX Host 1288 PPP Calls over X.25 Networks 1288 Overview 1289 Remote PC Browsing Network Topology 1289 Protocol Translation Configuration Example 1290 APPENDIX Modem Initialization Strings Sample Modem Scripts1295

1278

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lvi

About Cisco IOS Software Documentation for Release 12.4This chapter describes the objectives, audience, organization, and conventions of Cisco IOS software documentation. It also provides sources for obtaining documentation, technical assistance, and additional publications and information from Cisco Systems. It contains the following sections:

Documentation Objectives, page lvii Audience, page lvii Documentation Organization for Cisco IOS Release 12.4, page lviii Document Conventions, page lxiv Obtaining Documentation, page lxv Documentation Feedback, page lxvi Cisco Product Security Overview, page lxvii Obtaining Technical Assistance, page lxviii Obtaining Additional Publications and Information, page lxix

Documentation ObjectivesCisco IOS software documentation describes the tasks and commands available to configure and maintain Cisco networking devices.

AudienceThe Cisco IOS software documentation set is intended primarily for users who configure and maintain Cisco networking devices (such as routers and switches) but who may not be familiar with the configuration and maintenance tasks, the relationship among tasks, or the Cisco IOS software commands necessary to perform particular tasks. The Cisco IOS software documentation set is also intended for those users experienced with Cisco IOS software who need to know about new features, new configuration options, and new software characteristics in the current Cisco IOS software release.


lvii

About Cisco IOS Software Documentation for Release 12.4 Documentation Organization for Cisco IOS Release 12.4

Documentation Organization for Cisco IOS Release 12.4The Cisco IOS Release 12.4 documentation set consists of the configuration guide and command reference pairs listed in Table 1 and the supporting documents listed in Table 2. The configuration guides and command references are organized by technology. For the configuration guid