Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BGP AND MPLS CONFIGURATION GUIDE 2010-10-12 Configuration manual

JunosE™ Software

for E Series™ Broadband

Services Routers

Broadband Access

Configuration Guide

Release

11.3.x

Published: 2010-10-12

Juniper Networks, Inc.

1194 North Mathilda Avenue

Sunnyvale, California 94089

USA

408-745-2000

www.juniper.net

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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 to Juniper Networks: U.S. Patent Nos. 5,473,599, 5,905,725, 5,909,440, 6,192,051, 6,333,650, 6,359,479, 6,406,312,

6,429,706, 6,459,579, 6,493,347, 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 11.3.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, Namrata Mehta

Editing: Benjamin Mann, Alana Calapai

Illustration: Nathaniel Woodward

Cover Design: Edmonds Design

Revision History

October 2010—FRS JunosE 11.3.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 OS 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxv

Part 1 Managing Remote Access

Chapter 1 Configuring Remote Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2 Monitoring and Troubleshooting Remote Access . . . . . . . . . . . . . . . . . . . . . . 111

Part 2 Managing RADIUS and TACACS+

Chapter 3 Configuring RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

Chapter 4 Configuring RADIUS Dynamic-Request Server . . . . . . . . . . . . . . . . . . . . . . . 237

Chapter 5 Configuring RADIUS Relay Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Chapter 6 RADIUS Attribute Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Chapter 7 Application Terminate Reasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373

Chapter 14 Configuring L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409

Chapter 15 L2TP Disconnect Cause Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

Chapter 16 Monitoring L2TP and L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425

Part 4 Managing DHCP

Chapter 17 DHCP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457

Chapter 18 DHCP Local Server Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465

Chapter 19 Configuring DHCP Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473

Chapter 20 Configuring DHCP Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491

Chapter 21 Configuring the DHCP External Server Application . . . . . . . . . . . . . . . . . . . 519

Chapter 22 Monitoring and Troubleshooting DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533

Part 5 Managing the Subscriber Environment

Chapter 23 Configuring Subscriber Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 577

Chapter 24 Monitoring Subscriber Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591

Chapter 25 Configuring Subscriber Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595

Chapter 26 Monitoring Subscriber Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 627

Part 6 Managing Subscriber Services

Chapter 27 Configuring Service Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633

Chapter 28 Monitoring Service Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 697

Part 7 Index

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 725

JunosE 11.3.x Broadband Access Configuration Guide

Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxv

E Series and JunosE Documentation and Release Notes . . . . . . . . . . . . . . . . . . xxxv

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxv

E Series and JunosE Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . xxxv

Obtaining Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxvii

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxvii

Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxvii

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

Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxviii

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 . . . . . . . . . . . . . . . . . . . . . . . . . 13

Using Delimiters Other Than @ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

System Log Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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

Configuring Local Authentication Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Creating the Local Authentication Environment . . . . . . . . . . . . . . . . . . . . . . . 39

Creating Local User Databases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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

Using the username Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Using the aaa local username Command . . . . . . . . . . . . . . . . . . . . . . . . 40

Assigning a Local User Database to a Virtual Router . . . . . . . . . . . . . . . . . . . . 41

Enabling Local Authentication on the Virtual Router . . . . . . . . . . . . . . . . . . . . 41

Configuration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Local Authentication Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Configuring Tunnel Subscriber Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Configuring Name Server Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

DNS Primary and Secondary NMS Configuration . . . . . . . . . . . . . . . . . . 50

WINS Primary and Secondary NMS Configuration . . . . . . . . . . . . . . . . . . 52

Configuring Local Address Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Local Address Pool Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Local Address Pool Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Shared Local Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

SNMP Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Configuring a Local Address Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Configuring DHCP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Creating an IP Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Single Clients per ATM Subinterface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Multiple Clients per ATM Subinterface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Configuring AAA Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Allowing or Denying Domain Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Using Domain Name Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Manually Setting NAS-Port-Type Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Service-Description Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Using RADIUS Route-Download Server to Distribute Routes . . . . . . . . . . . . . . . . 69

Format of Downloaded Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Framed-Route (RADIUS attribute 22) . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Cisco-AVPair (Cisco VSA 26-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

How the Route-Download Server Downloads Routes . . . . . . . . . . . . . . . . . . 70

JunosE 11.3.x Broadband Access Configuration Guide

Configuring the Route-Download Server to Download Routes . . . . . . . . . . . . 70

Using the AAA Logical Line Identifier to Track Subscribers . . . . . . . . . . . . . . . . . . 74

How the Router Obtains and Uses the LLID . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

RADIUS Attributes in Preauthentication Request . . . . . . . . . . . . . . . . . . . . . . 75

Considerations for Using the LLID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Configuring the Router to Obtain the LLID for a Subscriber . . . . . . . . . . . . . . 76

Troubleshooting Subscriber Preauthentication . . . . . . . . . . . . . . . . . . . . . . . . 79

Using VSAs for Dynamic IP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Traffic Shaping for PPP over ATM Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Mapping Application Terminate Reasons to RADIUS Terminate Codes . . . . . . . . 82

Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Configuring Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Limiting Active Subscribers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Notifying RADIUS of AAA Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Configuring Standard RADIUS IPv6 Attributes for IPv6 Neighbor Discovery Router

Advertisements and DHCPv6 Prefix Delegation . . . . . . . . . . . . . . . . . . . . . . . 88

Duplicate IPv6 Prefix Check Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Configuring Duplicate IPv6 Prefix Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Propagation of LAG Subscriber Information to AAA and RADIUS . . . . . . . . . . . . . 90

Configuring the SRC Client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Retrieval of DSL Line Rate Information from Access Nodes Overview . . . . . . . . 100

DHCPv6 Local Address Pools for Allocation of IPv6 Prefixes Overview . . . . . . . . 101

DHCPv6 Prefix Delegation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Order of Preference in Determining the Local Address Pool for Allocating

Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Order of Preference in Allocating Prefixes and Assigning DNS Addresses to

Requesting Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Configuring the DHCPv6 Local Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Limitation on the Number of Prefixes Used by Clients . . . . . . . . . . . . . . . . . . 107

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

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Chapter 2 Monitoring and Troubleshooting Remote Access . . . . . . . . . . . . . . . . . . . . . . 111

Setting Baselines for Remote Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Setting a Baseline for AAA Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Setting a Baseline for AAA Route Downloads . . . . . . . . . . . . . . . . . . . . . . . . . 113

Setting a Baseline for COPS Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Setting a Baseline for Local Address Pool Statistics . . . . . . . . . . . . . . . . . . . . 113

Setting a Baseline for RADIUS Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Setting the Baseline for SRC Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

How to Monitor PPP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Monitoring AAA Accounting Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Monitoring AAA Accounting Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Monitoring Accounting Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Monitoring Specific Virtual Router Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Monitoring the Default AAA Authentication Method List . . . . . . . . . . . . . . . . . . . 116

Monitoring Domain and Realm Name Delimiters . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Monitoring Mapping Between User Domains and Virtual Routers . . . . . . . . . . . . . 117

Monitoring Tunnel Subscriber Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table of Contents

Monitoring Routing Table Address Lookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Monitoring the AAA Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Monitoring IP Addresses of Primary and Secondary DNS and WINS Name

Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Monitoring AAA Profile Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Monitoring Statistics about the RADIUS Route-Download Server . . . . . . . . . . . . 121

Monitoring Routes Downloaded by the RADIUS Route-Download Server . . . . . . 123

Monitoring Chassis-Wide Routes Downloaded by RADIUS Route-Download

Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Monitoring Authentication, Authorization, and Accounting Statistics . . . . . . . . . 126

Monitoring the Number of Active Subscribers Per Port . . . . . . . . . . . . . . . . . . . . . 128

Monitoring the Maximum Number of Active Subscribers Per Virtual Router . . . . 128

Monitoring Session Timeouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Monitoring Interim Accounting for Users on the Virtual Router . . . . . . . . . . . . . . 129

Monitoring Virtual Router Groups Configured for AAA Broadcast Accounting . . . 129

Monitoring Configuration Information for AAA Local Authentication . . . . . . . . . . 130

Monitoring AAA Server Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Monitoring the COPS Layer Over SRC Connection . . . . . . . . . . . . . . . . . . . . . . . . 133

Monitoring Statistics About the COPS Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Monitoring Local Address Pool Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Monitoring Local Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Monitoring Local Address Pool Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

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

Monitoring the Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Monitoring the B-RAS License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Monitoring the RADIUS Server Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Monitoring RADIUS Override Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Monitoring the RADIUS Rollover Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Monitoring RADIUS Server Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Monitoring RADIUS Services Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Monitoring RADIUS SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Monitoring RADIUS Accounting for L2TP Tunnels . . . . . . . . . . . . . . . . . . . . . . . . 148

Monitoring RADIUS UDP Checksums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Monitoring RADIUS Server IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Monitoring the RADIUS Attribute Used for IPv6 Neighbor Discovery Router

Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Monitoring the RADIUS Attribute Used for DHCPv6 Prefix Delegation . . . . . . . . 149

Monitoring Duplicate IPv6 Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Monitoring SRC Client Connection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Monitoring SRC Client Connection Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Monitoring the SRC Client Version Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Monitoring Subscriber Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Monitoring Application Terminate Reason Mappings . . . . . . . . . . . . . . . . . . . . . . 159

Monitoring IPv6 Local Pools for DHCP Prefix Delegation By All Configured

Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Monitoring IPv6 Local Pools for DHCP Prefix Delegation By Pool Name . . . . . . . 162

Monitoring IPv6 Local Pool Statistics for DHCP Prefix Delegation . . . . . . . . . . . . 163

JunosE 11.3.x Broadband Access Configuration Guide

Part 2 Managing RADIUS and TACACS+

Chapter 3 Configuring RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

RADIUS Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

RADIUS Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

RADIUS Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

RADIUS References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Subscriber AAA Access Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Supported RADIUS IETF Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Supported Juniper Networks VSAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Subscriber AAA Accounting Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Supported RADIUS IETF Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Supported Juniper Networks VSAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Tunnel Accounting Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

DSL Forum VSAs in AAA Access and Accounting Messages . . . . . . . . . . . . . . . . 186

CLI AAA Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

CLI Commands Used to Modify RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . 188

RADIUS IETF Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

[4] NAS-IP-Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

[5] NAS-Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

[8] Framed-IP-Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

[9] Framed-Ip-Netmask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

[13] Framed-Compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

[22] Framed-Route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

[25] Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

[30] Called-Station-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

[31] Calling-Station-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

[32] NAS-Identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

[41] Acct-Delay-Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

[44] Acct-Session-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

[45] Acct-Authentic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

[49] Acct-Terminate-Cause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

[50] Acct-Multi-Session-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

[51] Acct-Link-Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

[52] Acct-Input-Gigawords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

[53] Output-Gigawords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

[55] Event-Timestamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

[61] NAS-Port-Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

[64] Tunnel-Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

[65] Tunnel-Medium-Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

[66] Tunnel-Client-Endpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

[67] Tunnel-Server-Endpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

[68] Acct-Tunnel-Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

[77] Connect-Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

[82] Tunnel-Assignment-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

[83] Tunnel-Preference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

[87] NAS-Port-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

[90] Tunnel-Client-Auth-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Table of Contents

[91] Tunnel-Server-Auth-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

[96] Framed-Interface-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

[97] Framed-Ipv6-Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

[99] Framed-Ipv6-Route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

[100] Framed-Ipv6-Pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

[123] Delegated-Ipv6-Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

[188] Ascend-Num-In-Multilink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

All Tunnel Server Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Juniper Networks Vendor-Specific Attributes . . . . . . . . . . . . . . . . . . . . . . . . . 217

[26-1] Virtual-Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

[26-10] Ingress-Policy-Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

[26-11] Egress-Policy-Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

[26-14] Service-Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

[26-15] PCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

[26-16] SCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

[26-17] MBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

[26-24] Pppoe-Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

[26-35] Acct-Input-Gigapackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

[26-36] Acct-Output-Gigapackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

[26-44] Tunnel-Interface-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

[26-45] Ipv6-Virtual-Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

[26-46] Ipv6-Local-Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

[26-47] Ipv6-Primary-DNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

[26-48] Ipv6-Secondary-DNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

[26-51] Disconnect-Cause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

[26-53] Service-Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

[26-55] DHCP-Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

[26-56] DHCP-MAC-Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

[26-57] DHCP-GI-Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

[26-62] MLPPP-Bundle-Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

[26-63] Interface-Desc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

[26-81] L2C-Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

[26-92] L2C-Up-Stream-Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

[26-93] L2C-Down-Stream-Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226

[26-129] Ipv6-NdRa-Prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

[26-141] Downstream-Calculated-Qos-Rate . . . . . . . . . . . . . . . . . . . . . 227

[26-142] Upstream-Calculated-Qos-Rate . . . . . . . . . . . . . . . . . . . . . . . 228

[26-143] Max-Clients-Per-Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

[26-150] ICR-Partition-Id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

All IPv6 Accounting Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

[26-159] DHCP-Option 82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

ANCP-Related Juniper Networks VSAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

DSL Forum Vendor-Specific Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Including or Excluding Attributes in RADIUS Messages . . . . . . . . . . . . . . . . . 234

Ignoring Attributes When Receiving Access-Accept Messages . . . . . . . . . . 234

Chapter 4 Configuring RADIUS Dynamic-Request Server . . . . . . . . . . . . . . . . . . . . . . . 237

RADIUS Dynamic-Request Server Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

RADIUS Dynamic-Request Server Platform Considerations . . . . . . . . . . . . . . . . 238

JunosE 11.3.x Broadband Access Configuration Guide

RADIUS Dynamic-Request Server References . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

How RADIUS Dynamic-Request Server Works . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

RADIUS-Initiated Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Disconnect Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Message Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Supported Error-Cause Codes (RADIUS Attribute 101) . . . . . . . . . . . . . . . . 240

Qualifications for Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Security/Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Configuring RADIUS-Initiated Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

RADIUS-Initiated Change of Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Change-of-Authorization Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Message Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Supported Error-Cause Codes (RADIUS Attribute 101) . . . . . . . . . . . . . . . . . 242

Qualifications for Change of Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Security/Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Configuring RADIUS-Initiated Change of Authorization . . . . . . . . . . . . . . . . . . . . 244

RADIUS Dynamic-Request Server Commands . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Monitoring RADIUS Dynamic-Request Servers . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Chapter 5 Configuring RADIUS Relay Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

RADIUS Relay Server Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

RADIUS Relay Server Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 248

RADIUS Relay Server References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

How RADIUS Relay Server Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Authentication and Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Terminating the Wireless Subscriber’s Connection . . . . . . . . . . . . . . . . . . . . 250

RADIUS Relay Server and the SRC Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Using the SRC Software for Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Using the SRC Application for Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Configuring RADIUS Relay Server Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Monitoring RADIUS Relay Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

Chapter 6 RADIUS Attribute Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

RADIUS IETF Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Juniper Networks VSAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

DSL Forum VSAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

Pass Through RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

RADIUS Attributes References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Chapter 7 Application Terminate Reasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

AAA Terminate Reasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

L2TP Terminate Reasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

PPP Terminate Reasons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294

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

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

Table of Contents

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

Monitoring the Format of the Remote-Circuit-ID for RADIUS . . . . . . . . . . . . . . . 305

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 . . . . . . . . . . . . . . . . . . . . . . . . 306

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

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

Monitoring Included RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Monitoring Ignored RADIUS Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

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

Monitoring RADIUS Dynamic-Request Server Statistics . . . . . . . . . . . . . . . . . . . 310

Monitoring the Configuration of the RADIUS Dynamic-Request Server . . . . . . . . 311

Setting a Baseline for RADIUS Relay Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . 312

Monitoring RADIUS Relay Server Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312

Monitoring the Configuration of the RADIUS Relay Server . . . . . . . . . . . . . . . . . . 314

Monitoring the Status of RADIUS Relay UDP Checksums . . . . . . . . . . . . . . . . . . 315

Monitoring the Status of ICR Partition Accounting . . . . . . . . . . . . . . . . . . . . . . . . 315

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+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321

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

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

Configuring Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322

Chapter 10 Monitoring TACACS+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329

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

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

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

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

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

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

E120 Router and E320 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340

JunosE 11.3.x Broadband Access Configuration Guide

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 . . . . . . . . . . . . . 346

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 . . . . . . . . . . . . . . . . . . . . . . 347

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348

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

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

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

Configuring the Fallback Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358

Mapping User Domain Names to L2TP Tunnels from Tunnel Group Tunnel

Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362

Configuring the RX Speed on the LAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364

Managing the L2TP Destination Lockout Process . . . . . . . . . . . . . . . . . . . . . . . . 365

Modifying the Lockout Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365

Verifying That a Locked-Out Destination Is Available . . . . . . . . . . . . . . . . . . 367

Configuring a Lockout Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367

Unlocking a Destination that is Currently Locked Out . . . . . . . . . . . . . . . . . . 367

Starting an Immediate Lockout Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368

Managing Address Changes Received from Remote Endpoints . . . . . . . . . . . . . 368

Configuring LAC Tunnel Selection Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 369

Configuring the Failover Between Preference Levels Method . . . . . . . . . . . 369

Configuring the Failover Within a Preference Level Method . . . . . . . . . . . . . 370

Configuring the Maximum Sessions per Tunnel . . . . . . . . . . . . . . . . . . . . . . . 371

Configuring the Weighted Load Balancing Method . . . . . . . . . . . . . . . . . . . . 371

Chapter 13 Configuring an L2TP LNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373

LNS Configuration Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373

Configuring an LNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374

Creating an L2TP Destination Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

Table of Contents

Creating an L2TP Host Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

Configuring the Maximum Number of LNS Sessions . . . . . . . . . . . . . . . . . . . . . . 378

Configuring the RADIUS Connect-Info Attribute on the LNS . . . . . . . . . . . . . . . . 379

Overriding LNS Out-of-Resource Result Codes 4 and 5 . . . . . . . . . . . . . . . . . . . . 379

Overriding the Result Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380

Displaying the Current Override Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380

Selecting Service Modules for LNS Sessions Using MLPPP . . . . . . . . . . . . . . . . 380

Assigning Bundled Group Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381

Overriding All Endpoint Discriminators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382

Enabling Tunnel Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382

Creating Persistent Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383

Testing Tunnel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383

Managing L2TP Destinations, Tunnels, and Sessions . . . . . . . . . . . . . . . . . . . . . 383

Configuring Disconnect Cause Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384

Generating the Disconnect Cause AVP Globally . . . . . . . . . . . . . . . . . . . . . . 384

Generating the Disconnect Cause AVP with a Host Profile . . . . . . . . . . . . . 384

Enabling RADIUS Accounting for Disconnect Cause . . . . . . . . . . . . . . . . . . . 385

Displaying Disconnect Cause Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385

Configuring the Receive Window Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385

Configuring the Default Receive Window Size . . . . . . . . . . . . . . . . . . . . . . . 386

Configuring the Receive Window Size on the LAC . . . . . . . . . . . . . . . . . . . . 386

Configuring the Receive Window Size on the LNS . . . . . . . . . . . . . . . . . . . . . 387

Configuring Peer Resynchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388

Configuring Peer Resynchronization for L2TP Host Profiles and AAA Domain

Map Tunnels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389

Configuring the Global L2TP Peer Resynchronization Method . . . . . . . . . . . 390

Using RADIUS to Configure Peer Resynchronization . . . . . . . . . . . . . . . . . . . 391

Configuring L2TP Tunnel Switch Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392

Applying the L2TP Tunnel Switch Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392

Configuration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392

Configuring L2TP AVPs for Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393

Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393

Enabling Tunnel Switching on the Router . . . . . . . . . . . . . . . . . . . . . . . 394

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

Applying L2TP Tunnel Switch Profiles by Using AAA Domain Maps . . . 395

Applying L2TP Tunnel Switch Profiles by Using AAA Tunnel Groups . . 395

Applying Default L2TP Tunnel Switch Profiles . . . . . . . . . . . . . . . . . . . . 396

Applying L2TP Tunnel Switch Profiles by Using RADIUS . . . . . . . . . . . . 397

Configuring the Transmit Connect Speed Calculation Method . . . . . . . . . . . . . . 397

Transmit Connect Speed Calculation Methods . . . . . . . . . . . . . . . . . . . . . . 398

Static Layer 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398

Dynamic Layer 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399

QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399

Actual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399

Transmit Connect Speed Calculation Examples . . . . . . . . . . . . . . . . . . . . . . 399

Example 1: L2TP Session over ATM 1483 Interface . . . . . . . . . . . . . . . . 399

Example 2: L2TP Session over Ethernet VLAN Interface . . . . . . . . . . . 400

JunosE 11.3.x Broadband Access Configuration Guide

Transmit Connect Speed Reporting Considerations . . . . . . . . . . . . . . . . . . . 401

Session Termination for Dynamic Speed Timeout . . . . . . . . . . . . . . . . . 401

Advisory Speed Precedence for VLANs over Bridged Ethernet . . . . . . . 401

Using AAA Domain Maps to Configure the Transmit Connect Speed

Calculation Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401

Using AAA Tunnel Groups to Configure the Transmit Connect Speed

Calculation Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402

Using AAA Default Tunnel Parameters to Configure the Transmit Connect

Speed Calculation Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403

Using RADIUS to Configure the Transmit Connect Speed Calculation

Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404

PPP Accounting Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405

Stateful Line Module Switchover for LNS Sessions . . . . . . . . . . . . . . . . . . . . . . . 406

Chapter 14 Configuring L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409

L2TP Dial-Out Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409

Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410

Network Model for Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410

Dial-Out Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411

Dial-Out Operational States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411

Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411

Virtual Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412

Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412

Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412

Outgoing Call Setup Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

Access-Request Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

Access-Accept Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

Outgoing Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415

Mutual Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

Route Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

L2TP Dial-Out Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

L2TP Dial-Out References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

Before You Configure L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

Configuring L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417

Monitoring L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419

Chapter 15 L2TP Disconnect Cause Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

L2TP Disconnect Cause Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

Chapter 16 Monitoring L2TP and L2TP Dial-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425

Monitoring the Mapping for User Domains and Virtual Routers with AAA . . . . . 425

Monitoring Configured Tunnel Groups with AAA . . . . . . . . . . . . . . . . . . . . . . . . . 428

Monitoring Configuration of Tunnel Parameters with AAA . . . . . . . . . . . . . . . . . 430

Monitoring Global Configuration Status on E Series Routers . . . . . . . . . . . . . . . . 431

Monitoring Detailed Configuration Information for Specified Destinations . . . . . 433

Monitoring Locked Out Destinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435

Monitoring Configured Destination Profiles or Host Profiles . . . . . . . . . . . . . . . . 435

Monitoring Configured and Operational Status of all Destinations . . . . . . . . . . . 438

Monitoring Statistics on the Cause of a Session Disconnection . . . . . . . . . . . . . 438

Monitoring Detailed Configuration Information about Specified Sessions . . . . . 439

Table of Contents

Monitoring Configured and Operational Summary Status . . . . . . . . . . . . . . . . . . 441

Monitoring Configured Switch Profiles on Router . . . . . . . . . . . . . . . . . . . . . . . . . 441

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

Monitoring Configured and Operational Status of All Tunnels . . . . . . . . . . . . . . 445

Monitoring Chassis-wide Configuration for L2TP Dial-out . . . . . . . . . . . . . . . . . 446

Monitoring Status of Dial-out Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450

Monitoring Dial-out Targets within the Current VR Context . . . . . . . . . . . . . . . . . 452

Monitoring Operational Status within the Current VR Context . . . . . . . . . . . . . . 453

Part 4 Managing DHCP

Chapter 17 DHCP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457

DHCP Overview Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457

Session and Resource Control Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458

DHCP Platform Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458

DHCP References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459

Configuring the DHCP Access Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459

Configuring DHCP Proxy Clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459

Logging DHCP Packet Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461

Viewing and Deleting DHCP Client Bindings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461

Chapter 18 DHCP Local Server Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465

Embedded DHCP Local Server Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465

DHCP Local Server and Client Configuration . . . . . . . . . . . . . . . . . . . . . . . . 465

Equal-Access Mode Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466

Local Pool Selection and Address Allocation . . . . . . . . . . . . . . . . . . . . . . . . 466

The Connection Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467

Standalone Mode Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468

Local Pool Selection and Address Allocation . . . . . . . . . . . . . . . . . . . . . . . . 468

Server Management Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470

DHCP Local Server Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470

DHCP Local Server Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471

Chapter 19 Configuring DHCP Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473

Configuring the DHCP Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473

Basic Configuration of DHCP Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . . 473

Limiting the Number of IP Addresses Supplied by DHCP Local Server . . . . 474

Excluding IP Addresses from Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . 475

Configuring DHCP Local Server to Support Creation of Dynamic Subscriber

Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475

Differentiating Between Clients with the Same Client ID or Hardware

Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476

Logging Out DHCP Local Server Subscribers . . . . . . . . . . . . . . . . . . . . . . . . . 477

Clearing an IP DHCP Local Server Binding . . . . . . . . . . . . . . . . . . . . . . . . . . . 478

Using SNMP Traps to Monitor DHCP Local Server Events . . . . . . . . . . . . . . 478

Using DHCP Local Server Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478

Configuring DHCP Local Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480

Basic Configuration of DHCP Local Address Pools . . . . . . . . . . . . . . . . . . . . 480

Linking Local Address Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482

JunosE 11.3.x Broadband Access Configuration Guide

Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BGP AND MPLS CONFIGURATION GUIDE 2010-10-12, JUNOSE 11.3 Configuration manual

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