Juniper JUNOSE 11.1.X - BROADBAND ACCESS CONFIGURATION GUIDE 6-4-2010 Configuration manual

JUNOSe™ Software

for E Series™ Broadband Services Routers

Broadband Access

Configuration Guide

Release 11.1.x

Juniper Networks, Inc.

1194 North Mathilda Avenue

Sunnyvale, California 94089

USA

408-745-2000

www.juniper.net

Published: 2010-04-06

Juniper Networks, the Juniper Networks logo, JUNOS, NetScreen, ScreenOS, and Steel-Belted Radius are registered trademarks of Juniper Networks, Inc. in

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Products made or sold by Juniper Networks or components thereof might be covered by one or more of the following patents that are owned by or licensed

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6,538,518, 6,538,899, 6,552,918, 6,567,902, 6,578,186, and 6,590,785.

JUNOSe™ Software for E Series™ Broadband Services Routers Broadband Access Configuration Guide

Release 11.1.x

Writing: Mark Barnard, Diane Florio, Bruce Gillham, Sarah Lesway-Ball, Brian Wesley Simmons, Fran Singer, Poornima Goswami, Chander Aima, Hema

Priya J, Krupa Chandrashekar, Subash Babu Asokan, Sairam Venugopalan

Editing: Benjamin Mann

Illustration: Nathaniel Woodward

Cover Design: Edmonds Design

Revision History

April 2010—JUNOSe 11.1.x

The information in this document is current as of the date listed in the revision history.

YEAR 2000 NOTICE

Juniper Networks hardware and software products are Year 2000 compliant. The JUNOS Software has no known time-related limitations through the year

2038. However, the NTP application is known to have some difficulty in the year 2036.

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Abbreviated Table of Contents

About the Documentation xxxvii

Part 1 Managing Remote Access

Chapter 1 Configuring Remote Access 3

Chapter 2 Monitoring and Troubleshooting Remote Access 113

Part 2 Managing RADIUS and TACACS+

Chapter 3 Configuring RADIUS Attributes 171

Chapter 4 Configuring RADIUS Dynamic-Request Server 241

Chapter 5 Configuring RADIUS Relay Server 251

Chapter 6 RADIUS Attribute Descriptions 259

Chapter 7 Application Terminate Reasons 279

Chapter 8 Monitoring RADIUS 303

Chapter 9 Configuring TACACS+ 317

Chapter 10 Monitoring TACACS+ 329

Part 3 Managing L2TP

Chapter 11 L2TP Overview 335

Chapter 12 Configuring an L2TP LAC 343

Chapter 13 Configuring an L2TP LNS 375

Chapter 14 Configuring L2TP Dial-Out 411

Chapter 15 L2TP Disconnect Cause Codes 423

Chapter 16 Monitoring L2TP and L2TP Dial-Out 427

Part 4 Managing DHCP

Chapter 17 DHCP Overview 461

Chapter 18 DHCP Local Server Overview 469

Chapter 19 Configuring DHCP Local Server 477

Chapter 20 Configuring DHCP Relay 495

Chapter 21 Configuring the DHCP External Server Application 523

Chapter 22 Monitoring and Troubleshooting DHCP 539

Abbreviated Table of Contents ■ vii

Part 5 Managing the Subscriber Environment

Chapter 23 Configuring Subscriber Management 583

Chapter 24 Monitoring Subscriber Management 599

Chapter 25 Configuring Subscriber Interfaces 603

Chapter 26 Monitoring Subscriber Interfaces 635

Part 6 Managing Subscriber Services

Chapter 27 Configuring Service Manager 641

Chapter 28 Monitoring Service Manager 707

Part 7 Index

Index 735

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JUNOSe 11.1.x Broadband Access Configuration Guide

Table of Contents

About the Documentation xxxvii

E Series and JUNOSe Documentation and Release Notes .........................xxxvii

Audience ..................................................................................................xxxvii

E Series and JUNOSe Text and Syntax Conventions .................................xxxvii

Obtaining Documentation ........................................................................xxxix

Documentation Feedback .........................................................................xxxix

Requesting Technical Support ...................................................................xxxix

Self-Help Online Tools and Resources ......................................................xl

Opening a Case with JTAC .......................................................................xl

Part 1 Managing Remote Access

Chapter 1 Configuring Remote Access 3

Remote Access Overview ................................................................................4

B-RAS Data Flow .......................................................................................4

Configuring IP Addresses for Remote Clients ............................................4

AAA Overview ..........................................................................................5

Remote Access Platform Considerations .........................................................5

B-RAS Protocol Support ............................................................................5

Remote Access References ..............................................................................6

Before You Configure B-RAS ............................................................................6

Remote Access Configuration Tasks ................................................................6

Configuring a B-RAS License ...........................................................................7

Mapping a User Domain Name to a Virtual Router ..........................................8

Mapping User Requests Without a Valid Domain Name ............................8

Mapping User Requests Without a Configured Domain Name ..................9

Using DNIS ...............................................................................................9

Redirected Authentication .........................................................................9

IP Hinting ...............................................................................................10

Setting Up Domain Name and Realm Name Usage .......................................12

Using the Realm Name as the Domain Name .........................................12

Using Delimiters Other Than @ ..............................................................12

Using Either the Domain or the Realm as the Domain Name ..................13

Specifying the Domain Name or Realm Name Parse Direction ...............13

Stripping the Domain Name ...................................................................14

Domain Name and Realm Name Examples ............................................15

Specifying a Single Name for Users from a Domain ......................................16

Table of Contents ■ ix

Configuring RADIUS Authentication and Accounting Servers ........................18

Server Access ..........................................................................................18

Server Request Processing Limit .............................................................19

Authentication and Accounting Methods .................................................19

Supporting Exchange of Extensible Authentication Protocol

Messages ..........................................................................................20

Immediate Accounting Updates ..............................................................21

Duplicate and Broadcast Accounting .......................................................21

Configuring AAA Duplicate Accounting .............................................22

Configuring AAA Broadcast Accounting ............................................22

Overriding AAA Accounting NAS Information ..................................22

UDP Checksums .....................................................................................23

Collecting Accounting Statistics ...............................................................23

Configuring RADIUS AAA Servers ...........................................................23

SNMP Traps and System Log Messages ...................................................36

SNMP Traps ......................................................................................36

System Log Messages .......................................................................37

Configuring SNMP Traps .........................................................................37

Configuring Local Authentication Servers ......................................................40

Creating the Local Authentication Environment ......................................40

Creating Local User Databases ................................................................40

Adding User Entries to Local User Databases ..........................................40

Using the username Command ........................................................41

Using the aaa local username Command ..........................................41

Assigning a Local User Database to a Virtual Router ...............................42

Enabling Local Authentication on the Virtual Router ...............................42

Configuration Commands .......................................................................43

Local Authentication Example .................................................................47

Configuring Tunnel Subscriber Authentication ...............................................50

Configuring Name Server Addresses .............................................................51

Configuration Tasks ................................................................................51

DNS Primary and Secondary NMS Configuration ..............................52

WINS Primary and Secondary NMS Configuration ............................53

Configuring Local Address Servers ................................................................54

Local Address Pool Ranges .....................................................................54

Local Address Pool Aliases ......................................................................55

Shared Local Address Pools ....................................................................55

SNMP Thresholds ....................................................................................56

Configuring a Local Address Server .........................................................56

Configuring DHCP Features ...........................................................................60

Creating an IP Interface .................................................................................61

Single Clients per ATM Subinterface .......................................................61

Multiple Clients per ATM Subinterface ....................................................62

Configuring AAA Profiles ...............................................................................63

Allowing or Denying Domain Names ......................................................64

Configuration Example .....................................................................64

Using Domain Name Aliases ...................................................................65

Manually Setting NAS-Port-Type Attribute ...............................................69

Service-Description Attribute ..................................................................70

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JUNOSe 11.1.x Broadband Access Configuration Guide

Using RADIUS Route-Download Server to Distribute Routes ..........................71

Format of Downloaded Routes ...............................................................71

Framed-Route (RADIUS attribute 22) ................................................72

Cisco-AVPair (Cisco VSA 26-1) ..........................................................72

How the Route-Download Server Downloads Routes ..............................72

Configuring the Route-Download Server to Download Routes .................72

Using the AAA Logical Line Identifier to Track Subscribers ............................76

How the Router Obtains and Uses the LLID ............................................76

RADIUS Attributes in Preauthentication Request ....................................77

Considerations for Using the LLID ...........................................................78

Configuring the Router to Obtain the LLID for a Subscriber ....................79

Troubleshooting Subscriber Preauthentication ........................................81

Using VSAs for Dynamic IP Interfaces ...........................................................82

Traffic Shaping for PPP over ATM Interfaces ...........................................83

Mapping Application Terminate Reasons to RADIUS Terminate Codes .........84

Configuration Example ...........................................................................86

Configuring Timeout .....................................................................................88

Limiting Active Subscribers ...........................................................................89

Notifying RADIUS of AAA Failure ..................................................................90

Configuring Standard RADIUS IPv6 Attributes for IPv6 Neighbor Discovery

Router Advertisements and DHCPv6 Prefix Delegation ...........................90

Propagation of LAG Subscriber Information to AAA and RADIUS ..................92

Configuring the SRC Client ............................................................................94

Retrieval of DSL Line Rate Information from Access Nodes Overview .........102

DHCPv6 Local Address Pools for Allocation of IPv6 Prefixes Overview .......103

DHCPv6 Prefix Delegation Example .....................................................105

Order of Preference in Determining the Local Address Pool for Allocating

Prefixes ..........................................................................................106

Order of Preference in Allocating Prefixes and Assigning DNS Addresses

to Requesting Routers ....................................................................106

Configuring the DHCPv6 Local Address Pools ..............................................107

Limitation on the Number of Prefixes Used by Clients ..........................109

Using DHCPv6 Local Address Pools for Prefix Delegation over non-PPP Links

Example ...............................................................................................110

Chapter 2 Monitoring and Troubleshooting Remote Access 113

Setting Baselines for Remote Access ...........................................................114

Setting a Baseline for AAA Statistics ......................................................115

Setting a Baseline for AAA Route Downloads ........................................115

Setting a Baseline for COPS Statistics ....................................................115

Setting a Baseline for Local Address Pool Statistics ...............................115

Setting a Baseline for RADIUS Statistics ................................................116

Setting the Baseline for SRC Statistics ...................................................116

How to Monitor PPP Interfaces ...................................................................116

Monitoring AAA Accounting Configuration ..................................................116

Monitoring AAA Accounting Default ............................................................117

Monitoring Accounting Interval ...................................................................118

Monitoring Specific Virtual Router Groups ...................................................118

Monitoring the Default AAA Authentication Method List ..............................119

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Table of Contents

Monitoring Domain and Realm Name Delimiters ........................................119

Monitoring Mapping Between User Domains and Virtual Routers ...............119

Monitoring Tunnel Subscriber Authentication ..............................................121

Monitoring Routing Table Address Lookup ..................................................122

Monitoring the AAA Model ..........................................................................122

Monitoring IP Addresses of Primary and Secondary DNS and WINS Name

Servers ..................................................................................................122

Monitoring AAA Profile Configuration .........................................................123

Monitoring Statistics about the RADIUS Route-Download Server .................124

Monitoring Routes Downloaded by the RADIUS Route-Download Server ....126

Monitoring Chassis-Wide Routes Downloaded by RADIUS Route-Download

Servers ..................................................................................................127

Monitoring Authentication, Authorization, and Accounting Statistics ...........129

Monitoring the Number of Active Subscribers Per Port ................................131

Monitoring the Maximum Number of Active Subscribers Per Virtual

Router ...................................................................................................131

Monitoring Session Timeouts ......................................................................131

Monitoring Interim Accounting for Users on the Virtual Router ...................132

Monitoring Virtual Router Groups Configured for AAA Broadcast

Accounting ............................................................................................132

Monitoring Configuration Information for AAA Local Authentication ...........133

Monitoring AAA Server Attributes ................................................................134

Monitoring the COPS Layer Over SRC Connection ......................................136

Monitoring Statistics About the COPS Layer ................................................138

Monitoring Local Address Pool Aliases ........................................................140

Monitoring Local Address Pools ...................................................................140

Monitoring Local Address Pool Statistics .....................................................142

Monitoring Shared Local Address Pools .......................................................142

Monitoring the Routing Table ......................................................................143

Monitoring the B-RAS License .....................................................................144

Monitoring the RADIUS Server Algorithm ....................................................144

Monitoring RADIUS Override Settings .........................................................144

Monitoring the RADIUS Rollover Configuration ...........................................145

Monitoring RADIUS Server Information .......................................................145

Monitoring RADIUS Services Statistics .........................................................147

Monitoring RADIUS SNMP Traps .................................................................151

Monitoring RADIUS Accounting for L2TP Tunnels .......................................151

Monitoring RADIUS UDP Checksums ..........................................................152

Monitoring RADIUS Server IP Addresses .....................................................152

Monitoring the RADIUS Attribute Used for IPv6 Neighbor Discovery Router

Advertisements .....................................................................................152

Monitoring the RADIUS Attribute Used for DHCPv6 Prefix Delegation ........153

Monitoring SRC Client Connection Status ....................................................153

Monitoring SRC Client Connection Statistics ................................................155

Monitoring the SRC Client Version Number .................................................157

Monitoring Subscriber Information ..............................................................157

Monitoring Application Terminate Reason Mappings ..................................162

Monitoring IPv6 Local Pools for DHCP Prefix Delegation By All Configured

Pools .....................................................................................................164

Monitoring IPv6 Local Pools for DHCP Prefix Delegation By Pool Name ......165

Monitoring IPv6 Local Pool Statistics for DHCP Prefix Delegation ...............166

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JUNOSe 11.1.x Broadband Access Configuration Guide

Part 2 Managing RADIUS and TACACS+

Chapter 3 Configuring RADIUS Attributes 171

RADIUS Overview .......................................................................................171

RADIUS Services ...................................................................................172

RADIUS Attributes ................................................................................172

RADIUS Platform Considerations ................................................................172

RADIUS References .....................................................................................173

Subscriber AAA Access Messages ................................................................173

Supported RADIUS IETF Attributes .......................................................174

Supported Juniper Networks VSAs ........................................................176

Subscriber AAA Accounting Messages .........................................................181

Supported RADIUS IETF Attributes .......................................................181

Supported Juniper Networks VSAs ........................................................184

Tunnel Accounting Messages ................................................................187

DSL Forum VSAs in AAA Access and Accounting Messages .........................188

CLI AAA Messages .......................................................................................190

CLI Commands Used to Modify RADIUS Attributes .....................................191

RADIUS IETF Attributes ........................................................................191

[4] NAS-IP-Address .........................................................................191

[5] NAS-Port ...................................................................................192

[8] Framed-IP-Address ....................................................................195

[9] Framed-Ip-Netmask ..................................................................195

[13] Framed-Compression ..............................................................196

[25] Class .......................................................................................197

[30] Called-Station-Id ......................................................................197

[31] Calling-Station-Id .....................................................................197

[32] NAS-Identifier .........................................................................203

[41] Acct-Delay-Time ......................................................................205

[44] Acct-Session-Id ........................................................................205

[45] Acct-Authentic .........................................................................206

[49] Acct-Terminate-Cause .............................................................207

[50] Acct-Multi-Session-Id ...............................................................207

[51] Acct-Link-Count .......................................................................207

[52] Acct-Input-Gigawords ..............................................................208

[53] Output-Gigawords ...................................................................208

[55] Event-Timestamp ....................................................................209

[61] NAS-Port-Type ........................................................................209

[64] Tunnel-Type ............................................................................210

[65] Tunnel-Medium-Type ..............................................................211

[66] Tunnel-Client-Endpoint ...........................................................211

[67] Tunnel-Server-Endpoint ..........................................................212

[68] Acct-Tunnel-Connection ..........................................................212

[77] Connect-Info ...........................................................................212

[82] Tunnel-Assignment-Id .............................................................214

[83] Tunnel-Preference ...................................................................214

[87] NAS-Port-Id .............................................................................214

[90] Tunnel-Client-Auth-Id ..............................................................216

[91] Tunnel-Server-Auth-Id .............................................................216

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Table of Contents

[96] Framed-Interface-Id ................................................................217

[97] Framed-Ipv6-Prefix .................................................................217

[99] Framed-Ipv6-Route .................................................................217

[100] Framed-Ipv6-Pool .................................................................218

[123] Delegated-Ipv6-Prefix ............................................................218

[188] Ascend-Num-In-Multilink .......................................................219

All Tunnel Server Attributes ............................................................220

Juniper Networks Vendor-Specific Attributes .........................................220

[26-1] Virtual-Router .......................................................................220

[26-10] Ingress-Policy-Name ..........................................................221

[26-11] Egress-Policy-Name ............................................................221

[26-14] Service-Category ................................................................222

[26-15] PCR ....................................................................................222

[26-16] SCR ....................................................................................223

[26-17] MBS ...................................................................................223

[26-24] Pppoe-Description ..............................................................224

[26-35] Acct-Input-Gigapackets .......................................................224

[26-36] Acct-Output-Gigapackets ....................................................224

[26-44] Tunnel-Interface-Id .............................................................225

[26-45] Ipv6-Virtual-Router .............................................................225

[26-46] Ipv6-Local-Interface ...........................................................226

[26-47] Ipv6-Primary-DNS ..............................................................226

[26-48] Ipv6-Secondary-DNS ..........................................................227

[26-51] Disconnect-Cause ...............................................................227

[26-53] Service-Description ............................................................228

[26-55] DHCP-Options ....................................................................228

[26-56] DHCP-MAC-Address ...........................................................228

[26-57] DHCP-GI-Address ...............................................................229

[26-62] MLPPP-Bundle-Name .........................................................229

[26-63] Interface-Desc ....................................................................230

[26-81] L2C-Information .................................................................230

[26-92] L2C-Up-Stream-Data ..........................................................230

[26-93] L2C-Down-Stream-Data ......................................................231

[26-129] Ipv6-NdRa-Prefix ..............................................................231

[26-141] Downstream-Calculated-Qos-Rate ....................................232

[26-142] Upstream-Calculated-Qos-Rate .........................................232

[26-143] Max-Clients-Per-Interface .................................................233

[26-150] ICR-Partition-Id ................................................................234

All IPv6 Accounting Attributes ........................................................234

[26-159] DHCP-Option 82 ..............................................................235

ANCP-Related Juniper Networks VSAs ...................................................235

DSL Forum Vendor-Specific Attributes ..................................................237

Including or Excluding Attributes in RADIUS Messages .........................238

Ignoring Attributes When Receiving Access-Accept Messages ...............239

Chapter 4 Configuring RADIUS Dynamic-Request Server 241

RADIUS Dynamic-Request Server Overview ................................................241

RADIUS Dynamic-Request Server Platform Considerations .........................242

RADIUS Dynamic-Request Server References .............................................242

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How RADIUS Dynamic-Request Server Works ............................................243

RADIUS-Initiated Disconnect .......................................................................243

Disconnect Messages ............................................................................243

Message Exchange ......................................................................................243

Supported Error-Cause Codes (RADIUS Attribute 101) ..........................244

Qualifications for Disconnect ................................................................244

Security/Authentication .........................................................................245

Configuring RADIUS-Initiated Disconnect ....................................................245

RADIUS-Initiated Change of Authorization ..................................................245

Change-of-Authorization Messages ........................................................245

Message Exchange ................................................................................246

Supported Error-Cause Codes (RADIUS Attribute 101) ..........................246

Qualifications for Change of Authorization ............................................247

Security/Authentication .........................................................................247

Configuring RADIUS-Initiated Change of Authorization ...............................247

RADIUS Dynamic-Request Server Commands .............................................248

Monitoring RADIUS Dynamic-Request Servers ............................................250

Chapter 5 Configuring RADIUS Relay Server 251

RADIUS Relay Server Overview ...................................................................251

RADIUS Relay Server Platform Considerations ............................................252

RADIUS Relay Server References ................................................................252

How RADIUS Relay Server Works ...............................................................252

Authentication and Addressing .............................................................253

Accounting ............................................................................................253

Terminating the Wireless Subscriber’s Connection ...............................254

RADIUS Relay Server and the SRC Software ................................................254

Using the SRC Software for Addressing .................................................254

Using the SRC Application for Accounting .............................................254

Configuring RADIUS Relay Server Support ..................................................255

Monitoring RADIUS Relay Server .................................................................257

Chapter 6 RADIUS Attribute Descriptions 259

RADIUS IETF Attributes ...............................................................................259

Juniper Networks VSAs ................................................................................265

DSL Forum VSAs .........................................................................................276

Pass Through RADIUS Attributes .................................................................277

RADIUS Attributes References .....................................................................278

Chapter 7 Application Terminate Reasons 279

AAA Terminate Reasons ..............................................................................279

L2TP Terminate Reasons .............................................................................280

PPP Terminate Reasons ..............................................................................295

RADIUS Client Terminate Reasons ..............................................................301

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Chapter 8 Monitoring RADIUS 303

Monitoring Override Settings of RADIUS IETF Attributes .............................303

Monitoring the NAS-Port-Format RADIUS Attribute .....................................304

Monitoring the Calling-Station-Id RADIUS Attribute .....................................305

Monitoring the NAS-Identifier RADIUS Attribute ..........................................305

Monitoring the Format of the Remote-Circuit-ID for RADIUS .......................306

Monitoring the Delimiter Character in the Remote-Circuit-ID for RADIUS ....306

Monitoring the Acct-Session-Id RADIUS Attribute ........................................306

Monitoring the DSL-Port-Type RADIUS Attribute .........................................307

Monitoring the Connect-Info RADIUS Attribute ...........................................307

Monitoring the NAS-Port-ID RADIUS Attribute .............................................307

Monitoring Included RADIUS Attributes ......................................................308

Monitoring Ignored RADIUS Attributes ........................................................310

Setting the Baseline for RADIUS Dynamic-Request Server Statistics ............310

Monitoring RADIUS Dynamic-Request Server Statistics ...............................311

Monitoring the Configuration of the RADIUS Dynamic-Request Server ........312

Setting a Baseline for RADIUS Relay Statistics .............................................313

Monitoring RADIUS Relay Server Statistics ..................................................313

Monitoring the Configuration of the RADIUS Relay Server ..........................315

Monitoring the Status of RADIUS Relay UDP Checksums ............................316

Monitoring the Status of ICR Partition Accounting .......................................316

Chapter 9 Configuring TACACS+ 317

TACACS+ Overview ...................................................................................317

AAA Overview ......................................................................................318

Administrative Login Authentication .....................................................318

Privilege Authentication ........................................................................319

Login Authorization ..............................................................................319

Accounting ............................................................................................319

TACACS+ Platform Considerations .............................................................321

TACACS+ References .................................................................................321

Before You Configure TACACS+ .................................................................322

Configuring TACACS+ Support ...................................................................322

Configuring Authentication ...................................................................322

Configuring Accounting ........................................................................323

Chapter 10 Monitoring TACACS+ 329

Setting Baseline TACACS+ Statistics ...........................................................329

Monitoring TACACS+ Statistics ...................................................................329

Monitoring TACACS+ Information ..............................................................331

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Part 3 Managing L2TP

Chapter 11 L2TP Overview 335

L2TP Overview ............................................................................................335

L2TP Terminology .......................................................................................336

Implementing L2TP .....................................................................................337

Sequence of Events on the LAC ............................................................337

Sequence of Events on the LNS .............................................................338

Packet Fragmentation .................................................................................339

L2TP Platform Considerations .....................................................................340

L2TP Module Requirements ........................................................................340

ERX7xx Models, ERX14xx Models, and the ERX310 Router .................340

E120 Router and E320 Router ..............................................................341

Sessions and Tunnels Supported .................................................................341

L2TP References .........................................................................................342

Chapter 12 Configuring an L2TP LAC 343

LAC Configuration Prerequisites ..................................................................343

Modifying L2TP LAC Default Settings for Managing Destinations, Tunnels,

and Sessions .........................................................................................344

Generating UDP Checksums in Packets to L2TP Peers .................................345

Specifying a Destruct Timeout for L2TP Tunnels and Sessions ....................345

Preventing Creation of New Destinations, Tunnels, and Sessions ................346

Preventing Creation of New Destinations, Tunnels, and Sessions on the

Router ............................................................................................346

Preventing Creation of New Tunnels and Sessions at a Destination ......347

Preventing Creation of New Sessions for a Tunnel ................................347

Specifying a Drain Timeout for a Disconnected Tunnel .........................347

Shutting Down Destinations, Tunnels, and Sessions ....................................348

Closing Existing and Preventing New Destinations, Tunnels, and Sessions

on the Router .................................................................................348

Closing Existing and Preventing New Tunnels and Sessions for a

Destination .....................................................................................348

Closing Existing and Preventing New Sessions in a Specific Tunnel ......348

Closing a Specific Session .....................................................................349

Specifying the Number of Retransmission Attempts ....................................349

Configuring Calling Number AVP Formats ...................................................349

Calling Number AVP 22 Configuration Tasks ........................................353

Configuring the Fallback Format ...........................................................354

Disabling the Calling Number AVP ........................................................357

Mapping a User Domain Name to an L2TP Tunnel Overview ......................358

Mapping User Domain Names to L2TP Tunnels from Domain Map Tunnel

Mode ....................................................................................................359

Mapping User Domain Names to L2TP Tunnels from Tunnel Group Tunnel

Mode ....................................................................................................363

Configuring the RX Speed on the LAC .........................................................365

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Managing the L2TP Destination Lockout Process .........................................366

Modifying the Lockout Procedure .........................................................366

Verifying That a Locked-Out Destination Is Available ............................368

Configuring a Lockout Timeout .............................................................368

Unlocking a Destination that is Currently Locked Out ...........................368

Starting an Immediate Lockout Test .....................................................369

Managing Address Changes Received from Remote Endpoints ...................369

Configuring LAC Tunnel Selection Parameters .............................................370

Configuring the Failover Between Preference Levels Method ................370

Configuring the Failover Within a Preference Level Method ..................371

Configuring the Maximum Sessions per Tunnel ....................................372

Configuring the Weighted Load Balancing Method ................................372

Chapter 13 Configuring an L2TP LNS 375

LNS Configuration Prerequisites ..................................................................375

Configuring an LNS .....................................................................................376

Creating an L2TP Destination Profile ...........................................................378

Creating an L2TP Host Profile ......................................................................379

Configuring the Maximum Number of LNS Sessions ...................................380

Configuring the RADIUS Connect-Info Attribute on the LNS ........................380

Overriding LNS Out-of-Resource Result Codes 4 and 5 ................................381

Overriding the Result Codes .................................................................381

Displaying the Current Override Setting ................................................382

Selecting Service Modules for LNS Sessions Using MLPPP ...........................382

Assigning Bundled Group Identifiers .....................................................383

Overriding All Endpoint Discriminators ................................................384

Enabling Tunnel Switching ..........................................................................384

Creating Persistent Tunnels .........................................................................385

Testing Tunnel Configuration ......................................................................385

Managing L2TP Destinations, Tunnels, and Sessions ...................................385

Configuring Disconnect Cause Information .................................................386

Generating the Disconnect Cause AVP Globally .....................................386

Generating the Disconnect Cause AVP with a Host Profile ....................387

Enabling RADIUS Accounting for Disconnect Cause ..............................387

Displaying Disconnect Cause Statistics .................................................387

Configuring the Receive Window Size .........................................................388

Configuring the Default Receive Window Size ......................................388

Configuring the Receive Window Size on the LAC ................................389

Configuring the Receive Window Size on the LNS .................................390

Configuring Peer Resynchronization ...........................................................391

Configuring Peer Resynchronization for L2TP Host Profiles and AAA

Domain Map Tunnels .....................................................................392

Configuring the Global L2TP Peer Resynchronization Method ...............393

Using RADIUS to Configure Peer Resynchronization .............................394

Configuring L2TP Tunnel Switch Profiles .....................................................394

Applying the L2TP Tunnel Switch Profile ..............................................394

Configuration Guidelines .......................................................................395

Configuring L2TP AVPs for Relay ..........................................................395

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Configuration Tasks ..............................................................................396

Enabling Tunnel Switching on the Router .......................................396

Configuring L2TP Tunnel Switch Profiles ........................................396

Applying L2TP Tunnel Switch Profiles by Using AAA Domain

Maps ........................................................................................397

Applying L2TP Tunnel Switch Profiles by Using AAA Tunnel

Groups .....................................................................................398

Applying Default L2TP Tunnel Switch Profiles ................................399

Applying L2TP Tunnel Switch Profiles by Using RADIUS ................399

Configuring the Transmit Connect Speed Calculation Method .....................400

Transmit Connect Speed Calculation Methods ......................................401

Static Layer 2 .................................................................................401

Dynamic Layer 2 ............................................................................402

QoS ................................................................................................402

Actual .............................................................................................402

Transmit Connect Speed Calculation Examples ....................................402

Example 1: L2TP Session over ATM 1483 Interface ........................402

Example 2: L2TP Session over Ethernet VLAN Interface .................403

Transmit Connect Speed Reporting Considerations ..............................404

Session Termination for Dynamic Speed Timeout ..........................404

Advisory Speed Precedence for VLANs over Bridged Ethernet ........404

Using AAA Domain Maps to Configure the Transmit Connect Speed

Calculation Method .........................................................................404

Using AAA Tunnel Groups to Configure the Transmit Connect Speed

Calculation Method .........................................................................405

Using AAA Default Tunnel Parameters to Configure the Transmit Connect

Speed Calculation Method ..............................................................406

Using RADIUS to Configure the Transmit Connect Speed Calculation

Method ...........................................................................................407

PPP Accounting Statistics ............................................................................408

Chapter 14 Configuring L2TP Dial-Out 411

L2TP Dial-Out Overview ..............................................................................411

Terms ...................................................................................................412

Network Model for Dial-Out ..................................................................412

Dial-Out Process ...................................................................................413

Dial-Out Operational States ...................................................................413

Chassis ...........................................................................................413

Virtual Router .................................................................................414

Targets ...........................................................................................414

Sessions .........................................................................................415

Outgoing Call Setup Details ...................................................................416

Access-Request Message ................................................................416

Access-Accept Message ..................................................................417

Outgoing Call ..................................................................................417

Mutual Authentication ....................................................................418

Route Installation ...........................................................................418

L2TP Dial-Out Platform Considerations .......................................................418

L2TP Dial-Out References ............................................................................418

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Before You Configure L2TP Dial-Out ...........................................................419

Configuring L2TP Dial-Out ...........................................................................419

Monitoring L2TP Dial-Out ............................................................................421

Chapter 15 L2TP Disconnect Cause Codes 423

L2TP Disconnect Cause Codes .....................................................................423

Chapter 16 Monitoring L2TP and L2TP Dial-Out 427

Monitoring the Mapping for User Domains and Virtual Routers with AAA ....428

Monitoring Configured Tunnel Groups with AAA .........................................430

Monitoring Configuration of Tunnel Parameters with AAA ..........................432

Monitoring Global Configuration Status on E Series Routers ........................433

Monitoring Detailed Configuration Information for Specified

Destinations ..........................................................................................435

Monitoring Locked Out Destinations ...........................................................437

Monitoring Configured Destination Profiles or Host Profiles ........................437

Monitoring Configured and Operational Status of all Destinations ...............440

Monitoring Statistics on the Cause of a Session Disconnection ....................441

Monitoring Detailed Configuration Information about Specified Sessions ....442

Monitoring Configured and Operational Summary Status ............................443

Monitoring Configured Switch Profiles on Router ........................................444

Monitoring Detailed Configuration Information about Specified Tunnels .....445

Monitoring Configured and Operational Status of All Tunnels .....................448

Monitoring Chassis-wide Configuration for L2TP Dial-out ............................448

Monitoring Status of Dial-out Sessions .........................................................453

Monitoring Dial-out Targets within the Current VR Context .........................454

Monitoring Operational Status within the Current VR Context .....................456

Part 4 Managing DHCP

Chapter 17 DHCP Overview 461

DHCP Overview Information .......................................................................461

Session and Resource Control Software ................................................462

DHCP Platform Considerations ....................................................................462

DHCP References ........................................................................................463

Configuring the DHCP Access Model ...........................................................463

Configuring DHCP Proxy Clients .................................................................464

Logging DHCP Packet Information ..............................................................465

Viewing and Deleting DHCP Client Bindings ................................................466

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