Juniper networks JUNOSE 11.1.X User Manual

JUNOSe™ Software for E Series™ Broadband Services Routers

Link Layer Configuration Guide

Release 11.1.x

Juniper Networks, Inc.

1194 North Mathilda Avenue

Sunnyvale, California 94089

USA

408-745-2000

www.juniper.net

Published: 2010-04-07

Juniper Networks, the Juniper Networks logo, JUNOS, NetScreen, ScreenOS, and Steel-Belted Radius are registered trademarks of Juniper Networks, Inc. in the United States and other countries. JUNOSe is a trademark of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.

Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice.

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 Link Layer Configuration Guide

Writing: Krupa Chandrashekar, Subash Babu Asokan, Pallavi Madhusudhan, Diane Florio, Bruce Gillham, Justine Kangas, Sarah Lesway-Ball, Helen Shaw, Brian Wesley Simmons, Fran Singer Editing: Benjamin Mann Illustration: Nathaniel Woodward Cover Design: Edmonds Design

Revision History April 2010—FRS 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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agreements relating to the Software, whether oral or written (including any inconsistent terms contained in a purchase order), except that the terms of a separate written agreement executed by an authorized Juniper representative and Customer shall govern to the extent such terms are inconsistent or conflict with terms contained herein. No modification to this Agreement nor any waiver of any rights hereunder shall be effective unless expressly assented to in writing by the party to be charged. If any portion of this Agreement is held invalid, the Parties agree that such invalidity shall not affect the validity of the remainder of this Agreement. This Agreement and associated documentation has been written in the English language, and the Parties agree that the English version will govern. (For Canada: Les parties aux présentés confirment leur volonté que cette convention de même que tous les documents y compris tout avis qui s'y rattaché, soient redigés en langue anglaise. (Translation: The parties confirm that this Agreement and all related documentation is and will be in the English language)).

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Abbreviated Table of Contents

About the Documentation xxix

Part 1 Chapters

Chapter 1 Configuring ATM 3

Chapter 2 Configuring Frame Relay 107

Chapter 3 Configuring Multilink Frame Relay 133

Chapter 4 Configuring Upper-Layer Protocols over Static Ethernet Interfaces 153

Chapter 5 Configuring VLAN and S-VLAN Subinterfaces 169

Chapter 6 Configuring 802.3ad Link Aggregation and Link Redundancy 199

Chapter 7 Configuring IEEE 802.3ah OAM Link-Fault Management 227

Chapter 8 Configuring Point-to-Point Protocol 263

Chapter 9 Configuring Multilink PPP 303

Chapter 10 Configuring Multiclass Multilink PPP 349

Chapter 11 Configuring Packet over SONET 363

Chapter 12 Configuring Point-to-Point Protocol over Ethernet 375

Chapter 13 Configuring Bridged IP 437

Chapter 14 Configuring Bridged Ethernet 443

Chapter 15 Configuring Transparent Bridging 467

Chapter 16 Configuring Cisco HDLC 505

Chapter 17 Configuring Dynamic Interfaces 515

Chapter 18 Configuring Dynamic Interfaces Using Bulk Configuration 623

Part 2 Index

Index 717

Abbreviated Table of Contents ■ vii

JUNOSe 11.1.x Link Layer Configuration Guide

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About the Documentation xxix

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

Audience ....................................................................................................xxix

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

Obtaining Documentation ..........................................................................xxxi

Documentation Feedback ...........................................................................xxxi

Requesting Technical Support .....................................................................xxxi

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

Opening a Case with JTAC ...................................................................xxxii

Part 1 Chapters

Chapter 1 Configuring ATM 3

Overview .........................................................................................................3

ATM Interfaces ..........................................................................................4

ATM Physical Connections ........................................................................4

ATM Virtual Connections ..........................................................................5

Virtual Channel Connection ................................................................5

Virtual Path Connection ......................................................................5

ATM SVCs .................................................................................................5

ATM Adaptation Layer ..............................................................................5

Local ATM Passthrough .............................................................................6

VCC Cell Relay Encapsulation ...................................................................6

Traffic Management ..................................................................................7

Connection Admission Control ...........................................................7

ILMI ..........................................................................................................9

VPI/VCI Address Ranges ............................................................................9

VP Tunneling ..........................................................................................10

Platform Considerations ................................................................................10

Module Requirements .............................................................................10

Interface Specifiers .................................................................................11

References ....................................................................................................11

Supported Features .......................................................................................12

Module Capabilities .................................................................................12

Virtual Channel Support ..........................................................................13

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JUNOSe 11.1.x Link Layer Configuration Guide

ATM NBMA ....................................................................................................13

ARP Table ...............................................................................................14

Operations, Administration, and Management of ATM Interfaces .................15

End-to-End and Segment Endpoints .......................................................15

Fault Management ..................................................................................15

Continuity Verification ............................................................................17

Loopback ................................................................................................18

Automatic Disabling of F5 OAM Services ................................................20

Rate Limiting for F5 OAM Cells ...............................................................21

Before You Configure ATM ............................................................................21

Configuration Tasks .......................................................................................22

Creating a Basic Configuration ......................................................................22

Setting Optional Parameters ..........................................................................24

Optional Tasks on ATM 1483 Subinterfaces ............................................26

Configuring OAM ...........................................................................................33

Configuring F4 OAM ...............................................................................33

Configuring F5 OAM ...............................................................................35

Setting a Loopback Location ID ...............................................................36

Enabling OAM Flush ...............................................................................37

Running ATM Ping ..................................................................................38

Configuring an NBMA Interface .....................................................................39

Creating an NBMA Static Map ........................................................................40

Assigning Descriptions to Interfaces ..............................................................42

Sending Interface Descriptions to AAA ..........................................................43

Assigning Descriptions to Virtual Paths ...................................................44

Exporting ATM 1483 Subinterface Descriptions ......................................44

Configuring Individual ATM PVC Parameters .................................................45

Benefits ...................................................................................................46

Creating Control PVCs .............................................................................46

Creating Data PVCs .................................................................................47

Configuring the Service Category for Data PVCs .....................................48

Configuring Encapsulation for Data PVCs ...............................................50

Configuring F5 OAM for Data PVCs ........................................................51

Configuring Inverse ARP for Data PVCs ..................................................54

Static Map Versus Inverse ARP .........................................................14

Aging ................................................................................................14

Removing Circuits ............................................................................15

How the ATM Interface Handles AIS Cells ........................................16

How the ATM Interface Handles RDI Cells ........................................16

Activation and Deactivation Cells .....................................................17

Activating CC Cell Flow ....................................................................17

Deactivating CC Cell Flow .................................................................17

After CC Cell Flow Is Enabled ...........................................................18

VC Integrity ......................................................................................18

F4 OAM Cells ....................................................................................19

ATM Ping ..........................................................................................19

How the ATM Interface Handles Loopback Cells Received ................20

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Table of Contents

Configuring ATM VC Classes ..........................................................................55

Benefits ...................................................................................................55

Precedence Levels ..................................................................................56

Precedence Levels for Static PVCs ....................................................56

Precedence Levels for Dynamic PVCs ...............................................57

Precedence Level Examples .............................................................57

Upgrade Considerations ..........................................................................57

Configuring VC Classes ...........................................................................59

Assigning VC Classes to Individual PVCs .................................................64

Assigning VC Classes to ATM Major Interfaces ........................................65

Assigning VC Classes to Static ATM 1483 Subinterfaces ..........................66

Assigning VC Classes to Base Profiles for Bulk-Configured VC

Ranges .............................................................................................67

Precedence Level Examples for Assigning VC Classes .............................67

Example 1: Explicitly Changing the Service Category .......................67

Example 2: Changing the Encapsulation Method in the VC Class .....68

Example 3: Effect of Using the atm pvc Command ..........................68

Example 4: Overriding RADIUS Values .............................................68

Configuring Dynamic ATM 1483 Subinterfaces .............................................69

Monitoring ATM ............................................................................................69

Setting Statistics Baselines ......................................................................70

Displaying Interface Rate Statistics for ATM VCs and ATM VPs ...............70

Using ATM show Commands ..................................................................74

Chapter 2 Configuring Frame Relay 107

Overview .....................................................................................................107

Framing ................................................................................................107

Error Frames ........................................................................................108

Unicast and Multicast Addressing .........................................................108

User-to-Network and Network-to-Network Interfaces ............................108

Platform Considerations ..............................................................................109

Module Requirements ...........................................................................109

Interface Specifiers ...............................................................................110

References ..................................................................................................110

Before You Configure Frame Relay ..............................................................110

Configuring Frame Relay .............................................................................111

End-to-End Fragmentation and Reassembly ................................................119

Frame Fragmentation ...........................................................................119

Frame Reassembly ...............................................................................119

Map Class .............................................................................................120

Configuring End-to-End Fragmentation .................................................120

Monitoring Frame Relay ..............................................................................123

Chapter 3 Configuring Multilink Frame Relay 133

Overview .....................................................................................................133

T1/E1 Connections ................................................................................133

MLFR Link Integrity Protocol ................................................................134

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JUNOSe 11.1.x Link Layer Configuration Guide

Interface Stacking .................................................................................135

Platform Considerations ..............................................................................135

Module Requirements ...........................................................................136

Interface Specifiers ...............................................................................136

References ..................................................................................................136

Supported MLFR Features ...........................................................................136

Unsupported MLFR Features .......................................................................137

Before You Configure MLFR ........................................................................138

Configuration Tasks .....................................................................................138

Configuration Example .........................................................................139

Configuring Frame Relay Versus MLFR .................................................139

Monitoring MLFR .........................................................................................140

Chapter 4 Configuring Upper-Layer Protocols over Static Ethernet

Interfaces 153

Upper-Layer Protocols over Static Ethernet Overview .................................153

Upper-Layer Protocols over Static Ethernet Platform Considerations ...........154

Module Requirements ...........................................................................155

Interface Specifiers ...............................................................................155

Upper-Layer Protocols over Static Ethernet References ...............................155

Configuring IP over a Static Ethernet Interface ............................................155

Configuring PPPoE over a Static Ethernet Interface .....................................156

Configuring IP and MPLS over a Static Ethernet Interface ...........................157

Configuring IP, MPLS, and PPPoE over Ethernet .........................................157

L2TP and Ethernet ......................................................................................159

Multinetting and Ethernet ............................................................................159

Monitoring Upper-Level Protocols over Ethernet .........................................159

Chapter 5 Configuring VLAN and S-VLAN Subinterfaces 169

VLAN Overview ...........................................................................................169

S-VLAN Overview ........................................................................................170

VLAN and S-VLAN Platform Considerations .................................................171

Module Requirements ...........................................................................171

Interface Specifiers ...............................................................................171

VLAN and S-VLAN References .....................................................................172

Creating a VLAN Subinterface .....................................................................172

Creating a VLAN Major Interface ...........................................................172

Configuring IP over VLAN .....................................................................173

Configuring PPPoE over VLAN ..............................................................174

Configuring MPLS over VLAN ................................................................175

Configuring IP over VLAN and PPPoE over VLAN ..................................176

Configuring an S-VLAN Subinterface ...........................................................180

Configuring an S-VLAN Subinterface .....................................................181

Configuring PPPoE over an S-VLAN ......................................................181

Configuring S-VLAN Tunnels for Layer 2 Services over MPLS ......................184

Advantages ...........................................................................................184

Interface Stacking .................................................................................185

Configuration Example .........................................................................185

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Table of Contents

S-VLAN Oversubscription ............................................................................188

Monitoring VLAN and S-VLAN Subinterfaces ...............................................188

Displaying Interface Rate Statistics for VLAN Subinterfaces ..................189

Using Ethernet show Commands ..........................................................191

Chapter 6 Configuring 802.3ad Link Aggregation and Link Redundancy 199

802.3ad Link Aggregation for Ethernet Overview ........................................199

LACP .....................................................................................................200

Higher-Level Protocols ..........................................................................200

Load Balancing and QoS .......................................................................201

Ethernet Link Aggregation and MPLS ....................................................201

802.3ad Link Aggregation Platform Considerations .....................................201

Module Requirements ...........................................................................201

Interface Specifiers ...............................................................................202

802.3ad Link Aggregation References .........................................................202

Configuring 802.3ad Link Aggregation ........................................................202

Configuring an Ethernet Physical Interface ...........................................203

Configuring a LAG Bundle .....................................................................203

Configuring IP for a LAG Bundle ...........................................................204

Configuring a VLAN Subinterface for a LAG Bundle ...............................204

Configuring a PPPoE Subinterface for a LAG Bundle .............................204

Configuring MPLS for a LAG Bundle ......................................................205

Example: Configuring an IP Interface for a LAG Bundle ...............................207

Example: Configuring a PPPoE Subinterface for a LAG Bundle ....................208

Example: Configuring a PPPoE Subinterface over a VLAN for a LAG

Bundle ..................................................................................................209

Example: Configuring MPLS for a LAG Bundle .............................................209

Example: Configuring MPLS over a VLAN for a LAG Bundle ........................210

Ethernet Link Redundancy Overview ..........................................................211

Ethernet Link Redundancy Configuration Models .................................211

Ethernet Link Redundancy Configuration Diagrams .......................212

Ethernet Link Redundancy Behavior ...........................................................215

Link Failure and Acquisition ..................................................................216

Protecting Against Physical Link Failure .........................................216

Protecting Against Virtual Link Failure ............................................216

Reverting After a Failover ...............................................................217

LACP Configuration and Member Link Behavior ...................................217

Member Link with Non-LAG Partner .....................................................218

Ethernet Link Redundancy and RSTP .............................................218

Acquiring Initial Links .....................................................................219

Detecting Failures ...........................................................................219

Failing Over ....................................................................................220

Configuring Ethernet Link Redundancy .......................................................220

Monitoring 802.3ad Link Aggregation .........................................................222

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JUNOSe 11.1.x Link Layer Configuration Guide

Chapter 7 Configuring IEEE 802.3ah OAM Link-Fault Management 227

Ethernet OAM Link-Fault Management Overview ........................................228

Ethernet OAM Link-Fault Management Platform Considerations .................229

Module Requirements ...........................................................................229

Interface Specifiers ...............................................................................229

Ethernet OAM Link-Fault Management References .....................................230

OAM Messages ............................................................................................230

OAM Elements Overview ............................................................................231

OAM Client ..................................................................................................232

OAM Sublayer .............................................................................................232

Control Block ........................................................................................233

Multiplexer ............................................................................................233

Parser ...................................................................................................233

OAM Feature Overview ...............................................................................234

OAM Discovery Feature ...............................................................................234

Information OAM PDU Components .....................................................235

Transmission Settings for Information OAM PDUs ................................235

OAM Link Monitoring Feature .....................................................................236

Supported Error Events for Tracking Link Faults ...................................237

Actions Performed on Exceeding Threshold Values ..............................237

OAM Remote Fault Detection Feature .........................................................238

Link Fault ..............................................................................................238

Dying Gasp ...........................................................................................239

Critical Event ........................................................................................239

OAM Remote and Local Loopback Feature ..................................................240

Interrelationship of OAM Link-Fault Management with Ethernet

Subsystems ...........................................................................................240

Guidelines for Configuring 802.3ah OAM Link-Fault Management ...............242

Configuring 802.3ah OAM Link-Fault Management .....................................242

Example: Configuring 802.3ah OAM Link-Fault Management and Enabling

Remote Failure Monitoring on an Interface ...........................................249

Example: Enabling Remote Loopback Support on the Local Interface .........250

Monitoring OAM Link-Fault Management Discovery Settings for an

Interface ...............................................................................................250

Monitoring OAM Link-Fault Management Statistics for an Interface ............253

Monitoring OAM Link-Fault Management Configuration for an Interface .....255

Monitoring OAM Link-Fault Management Sessions on All Configured

Interfaces ..............................................................................................258

Chapter 8 Configuring Point-to-Point Protocol 263

Overview .....................................................................................................263

Framing ................................................................................................263

Error Frames ........................................................................................264

Link Control Protocol ............................................................................264

LCP Negotiation Parameters ...........................................................264

Validation of LCP Peer Magic Number ............................................265

B-RAS Support ......................................................................................266

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Table of Contents

Authentication ......................................................................................267

Rate Limiting for PPP Control Packets ..................................................267

Extensible Authentication Protocol .......................................................267

EAP Types ......................................................................................268

EAP Packet Retransmission ............................................................268

EAP Behavior in an L2TP Environment ..........................................269

Limitations .....................................................................................270

Performance ..................................................................................270

Remote Peer Scenarios During Negotiation of PPP Options ..................271

IPCP Lockout and Local IP Address Pool Restoration ............................272

Platform Considerations ..............................................................................273

Module Requirements ...........................................................................273

Interface Specifiers ...............................................................................273

References ..................................................................................................274

Before You Configure PPP ...........................................................................275

Configuration Tasks .....................................................................................275

Optional Configuration Tasks ......................................................................278

Configuring PPP Authentication ............................................................283

PPP Accounting Statistics ............................................................................285

Monitoring PPP Interfaces ...........................................................................286

Troubleshooting ..........................................................................................300

Chapter 9 Configuring Multilink PPP 303

Overview .....................................................................................................303

Application ...........................................................................................304

MLPPP LCP Extensions .........................................................................304

MLPPP Link Selection ...........................................................................305

Platform Considerations ..............................................................................306

Module Requirements ...........................................................................307

Interface Specifiers ...............................................................................307

References ..................................................................................................307

Supported MLPPP Features .........................................................................308

Unsupported MLPPP Features .....................................................................312

Before You Configure Static MLPPP .............................................................312

Configuring Static MLPPP ............................................................................312

Configuration Example .........................................................................314

Contextual Command Differences ........................................................314

Configuring Authentication ...................................................................315

Configuring Other PPP Attributes ..........................................................317

Configuring Dynamic MLPPP ......................................................................323

Configuring MLPPP Fragmentation and Reassembly ...................................324

Overview ..............................................................................................324

Application .....................................................................................325

Supported Configurations ...............................................................325

Module Requirements ....................................................................325

Link Configuration Parameters .......................................................325

Bundle Validation and Configuration Guidelines .............................326

Bundle Validation Failure ................................................................327

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JUNOSe 11.1.x Link Layer Configuration Guide

Recovering from Bundle Validation Failure .....................................327

Configuring Fragmentation and Reassembly for Static MLPPP ..............327

Static MLPPP over ATM 1483 Example ..........................................328

Configuring Fragmentation and Reassembly for Dynamic MLPPP ........329

Dynamic MLPPP over PPPoE Example ...........................................330

Dynamic MLPPP over L2TP Example .............................................330

Configuring Fragmentation and Reassembly for MLPPP Bundles ..........333

Configuring Multiclass MLPPP .....................................................................333

Monitoring MLPPP .......................................................................................333

Chapter 10 Configuring Multiclass Multilink PPP 349

Multiclass MLPPP Overview .........................................................................349

Multiclass MLPPP Fragmentation and Reassembly ...............................349

Multiclass MLPPP Configuration Guidelines ...........................................350

Multiclass MLPPP Traffic Classes Overview .................................................350

Multiclass MLPPP LCP Extensions Overview ................................................351

Multiclass MLPPP Platform Considerations ..................................................351

Module Requirements ...........................................................................352

Interface Specifiers ...............................................................................352

Multiclass MLPPP References ......................................................................352

Configuring Multiclass MLPPP .....................................................................352

Enabling Multiclass MLPPP ..........................................................................353

Configuring Traffic Classes on Multiclass MLPPP Interfaces .........................354

Configuring Fragmentation on Multiclass MLPPP Interfaces ........................355

Configuring Reassembly on Multiclass MLPPP Interfaces ............................355

Example: Configuring Multiclass MLPPP on a Dynamic Interface ................356

Example: Configuring Multiclass MLPPP on a Static Interface ......................357

Monitoring Multiclass MLPPP ......................................................................358

Chapter 11 Configuring Packet over SONET 363

Overview .....................................................................................................363

POS Features ........................................................................................363

SONET/SDH ..........................................................................................364

Platform Considerations ..............................................................................364

Module Requirements ...........................................................................365

Interface Specifiers ...............................................................................365

References ..................................................................................................365

Before You Configure POS ...........................................................................366

Configuration Tasks .....................................................................................366

Monitoring POS ...........................................................................................371

xvi ■ Table of Contents

Table of Contents

Chapter 12 Configuring Point-to-Point Protocol over Ethernet 375

Overview .....................................................................................................375

PPPoE Stages ........................................................................................376

Discovery .......................................................................................376

Session ...........................................................................................377

PPPoE Service Name Tables .................................................................377

Features .........................................................................................378

Table Structure ...............................................................................378

Enabling the Service Name Table for Use .......................................379

Using the PPPoE Remote Circuit ID to Identify Subscribers ..................379

Application .....................................................................................379

PPPoE Remote Circuit ID Capture ..................................................380

PPPoE Remote Circuit ID Format ...................................................380

Use by RADIUS or L2TP .................................................................383

System Event Log ...........................................................................384

PPPoE MTU Configuration ....................................................................384

Platform Considerations ..............................................................................384

Module Requirements ...........................................................................385

Interface Specifiers ...............................................................................385

References ..................................................................................................386

Before You Configure PPPoE .......................................................................386

Configuring PPPoE over ATM ......................................................................386

Configuring PPPoE for Ethernet Modules .....................................................393

PPPoE Interface and Subinterface Limits ..............................................393

Configuring IPv4 and IPv6 over PPPoE with VLAN ................................393

Configuring PPPoE Without VLANs .......................................................397

Configuring PADM Messages .......................................................................401

Configuring PADN Messages .......................................................................403

Configuring PPPoE Service Name Tables .....................................................404

Creating and Populating PPPoE Service Name Tables ...........................404

Enabling PPPoE Service Name Tables for Use with Static Interfaces .....407

PPPoE over ATM Configurations .....................................................407

PPPoE over Ethernet Configurations ..............................................409

Enabling PPPoE Service Name Tables for Use with Dynamic

Interfaces .......................................................................................410

Configuring PADS Packet Content ...............................................................412

Configuring PPPoE Remote Circuit ID Capture ............................................413

Monitoring PPPoE .......................................................................................419

Troubleshooting ..........................................................................................434

Chapter 13 Configuring Bridged IP 437

Overview .....................................................................................................437

Proxy ARP ............................................................................................437

DHCP ....................................................................................................438

Platform Considerations ..............................................................................438

Module Requirements ...........................................................................438

Interface Specifiers ...............................................................................439

Table of Contents ■ xvii

JUNOSe 11.1.x Link Layer Configuration Guide

References ..................................................................................................439

Before You Configure Bridged IP .................................................................439

Configuring Bridged IP ................................................................................440

Chapter 14 Configuring Bridged Ethernet 443

Overview .....................................................................................................443

Bridged Ethernet Application ................................................................444

Assigning MAC Addresses .....................................................................444

VLAN and S-VLAN Configurations .........................................................445

Platform Considerations ..............................................................................446

Module Requirements ...........................................................................446

Interface Specifiers ...............................................................................447

References ..................................................................................................447

Configuring Bridged Ethernet ......................................................................447

Configuring IP with PPPoE Terminated at the Router ............................447

Alternative Configuration ......................................................................452

Configuring VLANs over Bridged Ethernet ...................................................453

Configuring VLAN Subinterfaces over Bridged Ethernet ........................453

Configuring Higher-Level Protocols over VLANs ....................................454

Configuring IP over VLAN ...............................................................454

Configuring PPPoE over VLAN ........................................................454

Configuring MPLS over VLAN .........................................................455

Configuring S-VLANs over Bridged Ethernet ................................................458

Configuring S-VLAN Subinterfaces over Bridged Ethernet .....................458

Configuring Higher-Level Protocols over S-VLANs .................................460

Configuring the MTU Size for Bridged Ethernet ...........................................460

Monitoring Bridged Ethernet .......................................................................461

Chapter 15 Configuring Transparent Bridging 467

Overview .....................................................................................................467

How Transparent Bridging Works .........................................................467

Bridge Groups and Bridge Group Interfaces ..........................................468

Bridge Interface Types and Supported Configurations ...........................469

Subscriber Policies ................................................................................470

Concurrent Routing and Bridging ..........................................................471

Transparent Bridging and VPLS ............................................................472

Unsupported Features ...........................................................................472

Platform Considerations ..............................................................................472

Module Requirements ...........................................................................472

Interface Specifiers ...............................................................................473

References ..................................................................................................473

Before You Configure Transparent Bridging ................................................473

Configuration Tasks .....................................................................................474

Creating Bridge Groups .........................................................................475

Configuring Optional Bridge Group Attributes .......................................476

Configuring Bridge Group Interfaces .....................................................478

Configuring Subscriber Policies .............................................................480

Enabling Concurrent Routing and Bridging ...........................................486

xviii ■ Table of Contents

Table of Contents

Configuring Explicit Routing .................................................................486

Configuration Examples ..............................................................................488

Example 1: Bridging with Bridged Ethernet ..........................................488

Example 2: Bridging with VLANs ..........................................................489

Monitoring Transparent Bridging .................................................................490

Setting Statistics Baselines ....................................................................491

Removing Dynamic MAC Address Entries ............................................492

Monitoring Bridge Groups .....................................................................493

Monitoring Bridge Interfaces .................................................................500

Monitoring Subscriber Policies ..............................................................502

Chapter 16 Configuring Cisco HDLC 505

Overview .....................................................................................................505

Framing ................................................................................................505

Error Frames ........................................................................................506

SLARP Keepalive ...................................................................................506

Platform Considerations ..............................................................................506

Module Requirements ...........................................................................506

Interface Specifiers ...............................................................................507

Before You Configure Cisco HDLC ...............................................................507

Configuration Tasks .....................................................................................507

Optional Tasks ......................................................................................508

Configuration Example .........................................................................510

Monitoring Cisco HDLC ...............................................................................511

Chapter 17 Configuring Dynamic Interfaces 515

Overview .....................................................................................................515

Autodetection .......................................................................................516

Types of Dynamic Interfaces ................................................................516

Upper-Layer Dynamic Interface Configurations ....................................517

Profiles .................................................................................................518

RADIUS Authentication .........................................................................518

ATM Oversubscription for Dynamic Interfaces .....................................519

How Oversubscription Works .........................................................519

Static ATM 1483 Subinterfaces .......................................................519

Bulk-Configured VC Ranges ............................................................520

Combination of Static ATM 1483 Subinterfaces and Bulk-Configured

VC Ranges ...............................................................................520

Ethernet Oversubscription for Dynamic Interfaces ...............................521

Platform Considerations ..............................................................................521

Module Requirements ...........................................................................521

Interface Specifiers ...............................................................................521

References ..................................................................................................522

About Configuring Dynamic Interfaces over Static ATM ..............................522

About Configuring RADIUS for Dynamic Interfaces ...............................523

subscriber Command .....................................................................523

Authenticating Subscribers on Dynamic Bridged Ethernet over Static

ATM Interfaces .........................................................................523

Table of Contents ■ xix

JUNOSe 11.1.x Link Layer Configuration Guide

auto-configure Command .....................................................................525

atm pvc Command ...............................................................................528

Configuring PPP and PPPoE Dynamic Interfaces over Static ATM ...............528

Configuring a PPP or PPPoE Dynamic Interface ....................................529

Terminating Stale PPPoA Subscribers and Restarting LCP

Configuring PPPoE Dynamic Interfaces over PPPoE Static Interfaces ..........534

Configuring Dynamic PPPoE over Static PPPoE with ATM Interface

Configuring Dynamic PPPoE over Static PPPoE with Ethernet Interface

Configuring Dynamic PPPoE over Static PPPoE with Ethernet and VLAN

Configuring IPv4 and IPv6 over Static and Dynamic PPPoE ..................538

Configuring Dynamic PPPoE over Static PPPoE with Ethernet and S-VLAN

Configuring Encapsulation Type Lockout for PPPoE Clients ..................548

Configuring IPoA Dynamic Interfaces ..........................................................553

Configuring a Dynamic IPoA Interface ..................................................554

Configuring Bridged Ethernet Dynamic Interfaces .......................................557

Configuring a Dynamic Bridged Ethernet Interface ...............................558

Configuring Subscriber Management for IP Subscribers on Dynamic

Configuring a Dynamic Interface from a Profile ..........................................563

Profile Considerations ...........................................................................563

Profile Characteristics ...........................................................................564

Working with Profiles ...........................................................................568

Configuring a Profile .............................................................................569

Assigning a Profile to an Interface .........................................................594

Profile Configuration Examples .............................................................597

Scripts and Macros ......................................................................................598

Monitoring Upper-Layer Dynamic Interfaces and Profiles ............................599

Troubleshooting PPP and PPPoE Dynamic Interfaces ..................................619

Placing Dynamic IP Routes in the Routing Table ............................525

Encapsulation Type Lockout ...........................................................525

Negotiations ...................................................................................533

Columns .........................................................................................534

Columns .........................................................................................535

Interface Columns ..........................................................................536

Interface Columns ..........................................................................542

S-VLAN Oversubscription ...............................................................544

Differences from Lockout Configuration for PPPoE over Static

ATM .........................................................................................548

Configuration Tasks ........................................................................549

Configuring and Verifying Lockout for PPPoE Clients .....................549

Clearing the Lockout Condition for a PPPoE Client .........................551

Bridged Ethernet Interfaces ............................................................561

Configuration Example Using subscriber Command .......................561

Equivalent Configuration Example Using IP Subscriber

Management ............................................................................562

Bridged Ethernet Characteristics ....................................................564

IP Characteristics ............................................................................564

IPv6 Characteristics ........................................................................565

L2TP Characteristics .......................................................................566

MLPPP and PPP Characteristics ......................................................566

PPPoE Characteristics .....................................................................567

VLAN Characteristics ......................................................................567

xx ■ Table of Contents

Table of Contents

Chapter 18 Configuring Dynamic Interfaces Using Bulk Configuration 623

Overview .....................................................................................................623

Bulk Dynamic Interface Configurations .................................................624

Profiles .................................................................................................624

ATM Oversubscription for Bulk-Configured VC Ranges .........................625

Bulk-Configured VC Ranges ............................................................625

Combination of Static ATM 1483 Subinterfaces and Bulk-Configured

VC Ranges ...............................................................................626

Platform Considerations ..............................................................................627

Module Requirements ...........................................................................627

Interface Specifiers ...............................................................................627

References ..................................................................................................628

Configuring ATM 1483 Dynamic Subinterfaces ...........................................628

About Configuring Dynamic ATM 1483 Subinterfaces ..........................629

Overview and Benefits ...................................................................629

ATM 1483 Base Profiles ..................................................................630

Nested Profile Assignments ............................................................630

Additional Profile Characteristics for Upper Interfaces ....................631

Bulk Configuration of VC Ranges ....................................................631

Bulk Configuration and VC Classes .................................................632

Bulk Configuration and CAC ...........................................................633

Dynamic Interface Creation ............................................................633

Overriding Base Profile Assignments ..............................................634

Changing VC Subranges .................................................................634

Static ATM Interfaces Within VC Subranges ....................................634

Terminating Stale PPPoA Subscribers and Restarting LCP

Negotiations .............................................................................635

Authenticating Subscribers on Dynamic Bridged Ethernet over

Dynamic ATM Interfaces ..........................................................636

Configuring a Dynamic ATM 1483 Subinterface ...................................637

Configuring Overriding Profile Assignments .........................................646

Assigning an Overriding Profile to an ATM PVC .............................646

Removing an Overriding Profile Assignment from an ATM PVC .....648

Removing Overriding Profile Assignments from a VC Range or

VC Subrange ............................................................................648

Changing VC Subranges ........................................................................651

Adding VC Subranges .....................................................................651

Removing VC Subranges ................................................................652

Modifying VC Subranges ................................................................652

Merging VC Subranges ...................................................................653

Changing the Administrative State of VC Subranges .......................654

Configuring Static ATM Interfaces Within VC Subranges .......................656

Creating Static ATM Interfaces Within VC Subranges .....................656

Creating VC Subranges That Include Static ATM Interfaces .............657

Configuring VLAN Dynamic Subinterfaces ...................................................658

About Configuring Dynamic VLAN Subinterfaces ..................................660

Overview and Benefits ...................................................................660

VLAN Base Profiles .........................................................................661

Table of Contents ■ xxi

JUNOSe 11.1.x Link Layer Configuration Guide

Configuring a Dynamic VLAN Subinterface ...........................................667

Configuring Dynamic VLAN Subinterfaces Based on Agent Circuit

Configuring Overriding Profile Assignments for VLAN Major

Changing VLAN Subranges ....................................................................680

Configuring Static VLAN Subinterfaces Within VLAN Subranges ...........686

Monitoring Dynamic Interfaces and Profiles ................................................689

Nested Profile Assignments ............................................................662

Additional Profile Characteristics for Upper Interfaces ....................663

Bulk Configuration of VLAN Ranges ................................................663

Bulk Configuration of VLAN Ranges Using Agent-Circuit-Identifier

Information ..............................................................................664

Dynamic Interface Creation ............................................................665

Overriding Base Profile Assignments ..............................................666

Changing VLAN Subranges .............................................................666

Static VLAN Subinterfaces Within VLAN Subranges ........................667

Identifier Information .....................................................................669

Interfaces .......................................................................................670

Removing an Overriding Profile Assignment from a VLAN .............671

Removing Overriding Profile Assignments from a VLAN Range or

VLAN Subrange ........................................................................672

Adding VLAN Subranges .................................................................681

Removing VLAN Subranges ............................................................681

Modifying VLAN Subranges ............................................................682

Merging VLAN Subranges ...............................................................683

Changing the Administrative State of VLAN Subranges ..................684

Creating Static VLAN Subinterfaces Within VLAN Subranges ..........686

Creating VLAN Subranges That Include Static VLAN

Subinterfaces ...........................................................................687

Part 2 Index

Index ...........................................................................................................717

xxii ■ Table of Contents

List of Figures

Part 1 Chapters

Chapter 1 Configuring ATM 3

Figure 1: ATM Interface Column ......................................................................4

Figure 2: NBMA Interface Stack .....................................................................14

Figure 3: Configuring an ATM Interface, Subinterface, and PVC ....................23

Chapter 2 Configuring Frame Relay 107

Figure 4: Interconnection and Relationship of NNIs and Subnetworks ........109

Chapter 3 Configuring Multilink Frame Relay 133

Figure 5: MLFR Aggregation of T1 Lines into a Single Bundle ......................134

Figure 6: Terminating the Bundle at an MLFR Bridge ..................................134

Figure 7: Structure of MLFR .........................................................................135

Chapter 4 Configuring Upper-Layer Protocols over Static Ethernet Interfaces 153

Figure 8: Multiplexing Multiple Protocols over a Single Physical Link ..........154

Figure 9: Example of IP over Ethernet Stacking Configuration Procedure ....156

Figure 10: Example of PPPoE Stacking Configuration Procedure .................157

Figure 11: Example of IP and MPLS Stacking Configuration Procedure .......157

Figure 12: Example of IP, MPLS, and PPPoE Stacking Configuration

Procedure .............................................................................................158

Chapter 5 Configuring VLAN and S-VLAN Subinterfaces 169

Figure 13: Use of VLANs to Multiplex Different Protocols over a Single Physical

Link ......................................................................................................170

Figure 14: Example of IP/VLAN/Fast Ethernet Stacking Configuration

Procedure .............................................................................................174

Figure 15: Example of PPPoE/VLAN/Fast Ethernet Stacking Configuration

Procedure .............................................................................................175

Figure 16: Example of MPLS/VLAN/Fast Ethernet Stacking Configuration

Procedure .............................................................................................176

Figure 17: Example of PPPoE over VLAN with IP over VLAN Stacking

Configuration Procedure .......................................................................178

Figure 18: Example of PPPoE over S-VLAN Stacking Configuration

Procedure .............................................................................................182

Figure 19: S-VLAN Tunnels for Ethernet Layer 2 Services over MPLS ..........185

Chapter 6 Configuring 802.3ad Link Aggregation and Link Redundancy 199

Figure 20: Interface Stack for 802.3ad Link Aggregation .............................200

Figure 21: Ethernet Link Redundancy Configuration Models .......................212

Figure 22: GE-2 Line Module Using Physical Port Redundancy ....................213

Figure 23: Single-Homed GE-2 Line Module Configuration ..........................213

Figure 24: Single-Homed FE-8 Line Module Configuration (1:N) ..................213

Figure 25: FE-8 Line Module with 4 Redundant Ethernet Links (1:1) ...........214

Figure 26: Single-Homed GE-4 IOA Configuration (1:4) ...............................214

List of Figures ■ xxiii

JUNOSe 11.1.x Link Layer Configuration Guide

Figure 27: GE-8 IOA Configuration Across IOAs (1:N) ..................................215

Figure 28: Dual-Homed Configuration (1:1) .................................................215

Figure 29: Dual-Homed Heterogeneous Configuration in an RSTP

Network ................................................................................................219

Chapter 7 Configuring IEEE 802.3ah OAM Link-Fault Management 227

Figure 30: OAM PDU Format .......................................................................230

Figure 31: OAM Sublayer Interfaces ............................................................232

Figure 32: OAM Sublayer Entities ................................................................233

Figure 33: Interrelationship Between 802.3ah OAM and 802.3ad LAG ........241

Chapter 8 Configuring Point-to-Point Protocol 263

Figure 34: Authentication with EAP .............................................................267

Chapter 9 Configuring Multilink PPP 303

Figure 35: MLPPP Aggregation of T1 Lines into a Single Bundle ..................304

Figure 36: Structure of MLPPP .....................................................................304

Chapter 12 Configuring Point-to-Point Protocol over Ethernet 375

Figure 37: PPPoE over ATM .........................................................................376

Figure 38: Example of PPPoE over ATM Stacking ........................................389

Figure 39: Example of Configuring IPv4 and IPv6 over PPPoE ....................394

Figure 40: Example of PPPoE Stacking ........................................................398

Chapter 14 Configuring Bridged Ethernet 443

Figure 41: Bridged Ethernet Topology, Router Terminating and Routing

Traffic ...................................................................................................444

Figure 42: Interface Stacking for VLANs over Bridged Ethernet ...................445

Chapter 15 Configuring Transparent Bridging 467

Figure 43: Bridge Group with Fast Ethernet and Gigabit Ethernet Bridge

Interfaces ..............................................................................................469

Chapter 17 Configuring Dynamic Interfaces 515

Figure 44: Configuring an ATM 1483 Interface to Support Dynamic

Interfaces ..............................................................................................522

Figure 45: Dynamic PPP Interface Columns ................................................529

Figure 46: Dynamic PPPoE Interface Columns ............................................529

Figure 47: Dynamic PPPoE over Static PPPoE with ATM Interface

Columns ...............................................................................................534

Figure 48: Dynamic PPPoE over Static PPPoE with Non-VLAN Interface

Columns ...............................................................................................536

Figure 49: Dynamic PPPoE over Static PPPoE with VLAN Interface

Columns ...............................................................................................537

Figure 50: IPv4 and IPv6 Interface Columns over Static and Dynamic

PPPoE ...................................................................................................538

Figure 51: Dynamic PPPoE over Static PPPoE with S-VLAN Interface

Columns ...............................................................................................543

Figure 52: Dynamic IPoA over Static ATM 1483 Interface Columns ............553

Figure 53: Dynamic Bridged Ethernet over Static ATM 1483 Interface

Columns ...............................................................................................558

Figure 54: Creating and Configuring a Profile ..............................................568

Figure 55: Assigning a Profile to a Static Interface .......................................569

Chapter 18 Configuring Dynamic Interfaces Using Bulk Configuration 623

xxiv ■ List of Figures

List of Figures

Figure 56: Dynamic Interface Columns over Dynamic ATM 1483

Subinterfaces ........................................................................................629

Figure 57: Dynamic Interface Columns over Dynamic VLAN

Subinterfaces ........................................................................................659

Figure 58: Dynamic IP and PPPoE over Single Dynamic VLAN

Subinterface ..........................................................................................659

Figure 59: Dynamic VLAN Subinterfaces for Subscribers .............................661

List of Figures ■ xxv

JUNOSe 11.1.x Link Layer Configuration Guide

xxvi ■ List of Figures

List of Tables

About the Documentation xxix

Table 1: Notice Icons ...................................................................................xxx

Table 2: Text and Syntax Conventions ........................................................xxx

Part 1 Chapters

Chapter 1 Configuring ATM 3

Table 3: Scheduling Priorities for Traffic Classes ..............................................7

Table 4: Traffic Parameters Used to Compute Bandwidth ................................8

Table 5: ATM Capabilities on Line Modules and I/O Modules .........................12

Table 6: Handling of F4 and F5 Loopback Cells Received ..............................20

Table 7: F5 OAM Configuration Tasks and Associated Commands ................51

Table 8: Commands to Configure VC Class Attributes ...................................59

Chapter 3 Configuring Multilink Frame Relay 133

Table 9: LIP Messages and Functions ..........................................................134

Chapter 6 Configuring 802.3ad Link Aggregation and Link Redundancy 199

Table 10: Behavior of Member Links Using Local and Remote LACP

Modes ...................................................................................................218

Chapter 7 Configuring IEEE 802.3ah OAM Link-Fault Management 227

Table 11: show ethernet oam lfm discovery Output Fields ..........................251

Table 12: show ethernet oam lfm statistics Output Fields ............................254

Table 13: show ethernet oam lfm status Output Fields ................................256

Table 14: show ethernet oam lfm summary Output Fields ..........................259

Chapter 8 Configuring Point-to-Point Protocol 263

Table 15: Supported EAP Types ..................................................................268

Chapter 9 Configuring Multilink PPP 303

Table 16: Supported Configurations for MLPPP Fragmentation and

Reassembly ..........................................................................................325

Chapter 10 Configuring Multiclass Multilink PPP 349

Table 17: show ppp interface mlppp Output Fields .....................................359

Chapter 11 Configuring Packet over SONET 363

Table 18: Most Common SONET/SDH Implementations ..............................364

Chapter 12 Configuring Point-to-Point Protocol over Ethernet 375

Table 19: Sample PPPoE Service Name Table .............................................378

Table 20: Configuring Nondefault Formats for the PPPoE Remote Circuit

ID .........................................................................................................380

Table 21: Interface Specifier Format Examples for dsl-forum-1 Keyword ....382

Table 22: Default PPPoE Service Name Table ..............................................404

Table 23: PPPoE Service Name Table with Entries ......................................405

List of Tables ■ xxvii

JUNOSe 11.1.x Link Layer Configuration Guide

Chapter 13 Configuring Bridged IP 437

Table 24: Prerequisite Tasks for Configuring Bridged IP ..............................440

Chapter 15 Configuring Transparent Bridging 467

Table 25: Sample Bridge Group Forwarding Table .......................................469

Table 26: Default Subscriber Policies for Bridge Group Interfaces ................470

Table 27: Prerequisite Tasks for Configuring Transparent Bridging .............474

Chapter 17 Configuring Dynamic Interfaces 515

Table 28: Differences in Lockout Operation for Dynamic PPPoE

Configurations ......................................................................................549

xxviii ■ List of Tables

About the Documentation

■ E Series and JUNOSe Documentation and Release Notes on page xxix

■ Audience on page xxix

■ E Series and JUNOSe Text and Syntax Conventions on page xxix

■ Obtaining Documentation on page xxxi

■ Documentation Feedback on page xxxi

■ Requesting Technical Support on page xxxi

E Series and JUNOSe Documentation and Release Notes

For a list of related JUNOSe documentation, see

http://www.juniper.net/techpubs/software/index.html .

If the information in the latest release notes differs from the information in the documentation, follow the JUNOSe Release Notes.

To obtain the most current version of all Juniper Networks® technical documentation, see the product documentation page on the Juniper Networks website at

http://www.juniper.net/techpubs/.

Audience

This guide is intended for experienced system and network specialists working with Juniper Networks E Series Broadband Services Routers in an Internet access environment.

E Series and JUNOSe Text and Syntax Conventions

Table 1 on page xxx defines notice icons used in this documentation.

E Series and JUNOSe Documentation and Release Notes ■ xxix

JUNOSe 11.1.x Link Layer Configuration Guide

Table 1: Notice Icons

Table 2 on page xxx defines text and syntax conventions that we use throughout the E Series and JUNOSe documentation.

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Indicates a situation that might result in loss of data or hardware damage.Caution

Alerts you to the risk of personal injury or death.Warning

Alerts you to the risk of personal injury from a laser.Laser warning

Table 2: Text and Syntax Conventions

Represents commands and keywords in text.Bold text like this

Bold text like this

Fixed-width text like this

Represents text that the user must type.

Represents information as displayed on your terminal’s screen.

Italic text like this

Emphasizes words.

■

Identifies variables.

■

Identifies chapter, appendix, and book

■

names.

Plus sign (+) linking key names

keys simultaneously.

Syntax Conventions in the Command Reference Guide

ExamplesDescriptionConvention

Issue the clock source command.

■

Specify the keyword exp-msg.

■

host1(config)#traffic class low-loss1

host1#show ip ospf 2

Routing Process OSPF 2 with Router ID 5.5.0.250 Router is an Area Border Router (ABR)

There are two levels of access: user and

■

privileged.

clusterId, ipAddress.

■

Appendix A, System Specifications

■

Press Ctrl + b.Indicates that you must press two or more

terminal lengthRepresents keywords.Plain text like this

| (pipe symbol)

or variable to the left or to the right of this symbol. (The keyword or variable can be either optional or required.)

xxx ■ E Series and JUNOSe Text and Syntax Conventions

mask, accessListNameRepresents variables.Italic text like this

diagnostic | lineRepresents a choice to select one keyword

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