Cisco ASR 9000 Series Manual de usuario

Cisco ASR 9000 Series Aggregation Services Router Broadband

Network Gateway Configuration Guide, Release 4.2.x

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Text Part Number: OL-26148-02

CONTENTS

Preface

Preface ix

Changes to This Document ix

Obtaining Documentation and Submitting a Service Request ix

CHAPTER 1

Broadband Network Gateway Overview 1

Understanding BNG 1

BNG Architecture 2

BNG Role in ISP Network Models 4

BNG Configuration Process 5

Hardware Requirements for BNG 6

BNG Interoperability 7

CHAPTER 2

Configuring Authentication, Authorization, and Accounting Functions 9

AAA Overview 9

Using RADIUS Server Group 11

Configuring RADIUS Server Group 11

Specifying Method List 13

Configuring Method Lists for AAA 14

Defining AAA Attributes 15

Creating Attributes of Specific Format 17

Configuring RADIUS Attribute List 21

Configuring RADIUS Attribute Format 23

Configuring AAA Attribute Format Function 24

Making RADIUS Server Settings 25

Configuring RADIUS Server Settings 26

Configuring Automated Testing 30

Setting IP DSCP for RADIUS Server 31

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Balancing Transaction Load on the RADIUS Server 32

Configuring Load Balancing for Global RADIUS Server Group 32

Configuring Load Balancing for a Named RADIUS Server Group 34

Throttling of RADIUS Records 35

Configuring RADIUS Throttling Globally 36

Configuring RADIUS Throttling on a Server Group 37

RADIUS Change of Authorization (CoA) Overview 39

Understanding Per-VRF AAA Function 40

RADIUS Double-Dip Feature 40

Additional References 40

CHAPTER 3

Activating Control Policy 43

Control Policy Overview 43

Creating Class-Map 44

Configuring a Class-Map 45

Creating Policy-Map 46

Control Policy Events 47

Configuring a Policy-Map 48

Activating Policy-Map 50

Enabling a Service-Policy on a Subscriber Interface 50

Defining Dynamic Templates 51

Additional References 52

CHAPTER 4

Establishing Subscriber Sessions 55

Subscriber Session Overview 55

Establishing IPoE Session 57

Enabling IPv4 on an Access Interface 58

Creating Dynamic Template for IPv4 Subscriber Session 60

Creating a Policy-Map to Run During IPoE Session 62

Enabling IPoE Subscribers on an Access Interface 64

Establishing PPPoE Session 66

Provisioning PPP PTA Session 67

Creating PPPoE Profiles 68

Creating a PPP Dynamic-Template 69

Creating a Policy-Map to Run During PPPoE Session 70

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Applying the PPPoE Configurations to an Access Interface 72

Provisioning PPP LAC Session 74

Configuring the VPDN Template 75

Configuring Maximum Simultaneous VPDN Sessions 77

Activating VPDN Logging 78

Configuring Options to Apply on Calling Station ID 80

Configuring L2TP Session-ID Commands 81

Configuring L2TP Class Options 82

Configuring Softshut for VPDN 85

Making DHCP Settings 86

Enabling DHCP Proxy 87

Configuring DHCP IPv4 Profile Proxy Class 88

Configuring a Circuit-ID for an Interface 90

Configuring a Remote-ID 91

Configuring the Client Lease Time 92

Attaching a Proxy Profile to an Interface 94

Specifying DHCP Lease Limit 95

Specifying the Lease Limit for a Circuit-ID 95

Specifying the Lease Limit for a Remote-ID 97

Specifying the Lease Limit for an Interface 98

Understanding DHCP Option-82 99

Packet Handling on Subscriber Interfaces 100

Additional References 101

CHAPTER 5

Deploying the Quality of Service (QoS) 103

Quality of Service Overview 103

Configuring Service-policy and Applying Subscriber Settings Through RADIUS 104

Configuring Service-policy and Applying Subscriber Settings Through Dynamic Template 106

Parameterized QoS 108

Parameterized QoS Syntax 109

Configuring Parameterized QoS Policy Through RADIUS 114

Modifying Service Policy through CoA 117

QoS Accounting 119

Configuring QoS Accounting 120

QoS Features Supported on BNG 121

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Contents

Configuring Policy on S-VLAN 125

Additional References 127

CHAPTER 6

Configuring Subscriber Features 129

Access Control List and Access Control List-based Forwarding 129

Configuring Access-Control Lists 130

Activating ACL 131

Support for Lawful Intercept 132

Per-session Lawful Intercept 133

Disabling SNMP-based Lawful Intercept 134

Configuring the Inband Management Plane Protection Feature 135

Enabling the Mediation Device to Intercept VoIP and Data Sessions 135

Subscriber Session on Ambiguous VLANs 138

Establishing Subscriber Session on Ambiguous VLANs 138

uRPF 140

Multicast Services 141

Multicast Coexistence 141

Enabling Address Family for the VRF 141

Multicast Replication 142

HQoS Correlation 142

Configuring Minimum Unicast Bandwidth 143

Configuring Multicast HQOS Correlation Mode or Passive Mode 144

IGMP to Unicast QoS Shaper Correlation 145

Configuring the IGMP to HQoS Correlation Feature in a VRF 146

Configuring route-policy for Unicast QoS Shaper 147

Configuring IGMP Parameters for Subscriber Interfaces 149

IGMP Accounting 151

Configuring IGMP Accounting 151

DAPS Support 153

Configuring IPv4 Distributed Address Pool Service 153

HTTP Redirect Using PBR 154

Identifying HTTP Destinations for Redirection 155

Configuring Class Maps for HTTP Redirection 158

Configuring Policy Map for HTTP Redirect 160

Configuring Dynamic Template for Applying HTTPR Policy 162

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Configuring Web Logon 163

Additional References 167

APPENDIX A

XML Support for BNG Features 169

AAA XML Support 169

DHCP XML Support 172

Control Policy XML Support 175

DAPS XML Support 178

Subscriber Database XML Support 180

APPENDIX B

RADIUS Attributes 185

RADIUS IETF Attributes 185

RADIUS Vendor-Specific Attributes 187

Vendor-Specific Attributes for Account Operations 191

RADIUS ADSL Attributes 191

RADIUS ASCEND Attributes 192

RADIUS Microsoft Attributes 192

RADIUS Disconnect-Cause Attributes 192

APPENDIX C

Action Handlers 199

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Contents

Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide,

Release 4.2.x

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Contents

Preface

This Preface contains these sections:

•Changes to This Document, page ix

•Obtaining Documentation and Submitting a Service Request, page ix

Changes to This Document

This table lists the technical changes made to this document since it was first printed.

SummaryDateRevision

Republished with documentation updates for

Cisco IOS XR Release 4.2.1 features.

June 2012OL-26148-02

Initial release of this document.December 2011OL-26148-01

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service

request, and gathering additional information, see What's New in Cisco Product Documentation, at: http://

www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.

Subscribe to What's New in Cisco Product Documentation, which lists all new and revised Cisco technical

documentation, as an RSS feed and deliver content directly to your desktop using a reader application. The

RSS feeds are a free service.

Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide, Release

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Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide,

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Preface

Obtaining Documentation and Submitting a Service Request

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