Table of Contents

About the Documentation

E Series and JunosE Documentation and Release Notes
Audience
E Series and JunosE Text and Syntax Conventions
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Configuring ATM

ATM Interfaces

ATM Physical Connections

ATM Virtual Connections

Virtual Channel Connection
Virtual Path Connection

ATM Adaptation Layer

Local ATM Passthrough

VCC Cell Relay Encapsulation

Traffic Management

Connection Admission Control

How CAC Works
Configuring CAC
CAC and ATM Bulk Configuration

VPI/VCI Address Ranges

VP Tunneling

Platform Considerations

Module Requirements
Interface Specifiers

Supported Features

Module Capabilities
Virtual Channel Support

Static Map Versus Inverse ARP
Aging
Removing Circuits

Operations, Administration, and Management of ATM Interfaces

End-to-End and Segment Endpoints

Fault Management

How the ATM Interface Handles AIS Cells
How the ATM Interface Handles RDI Cells

Continuity Verification

Activation and Deactivation Cells
Activating CC Cell Flow
Deactivating CC Cell Flow
After CC Cell Flow Is Enabled

VC Integrity
F4 OAM Cells
ATM Ping
How the ATM Interface Handles Loopback Cells Received

Automatic Disabling of F5 OAM Services

Rate Limiting for F5 OAM Cells

Before You Configure ATM

Configuration Tasks

Creating a Basic Configuration

Setting Optional Parameters

Optional Tasks on ATM 1483 Subinterfaces

Configuring OAM

Configuring F4 OAM
Configuring F5 OAM
Setting a Loopback Location ID
Enabling OAM Flush
Running ATM Ping

Configuring an NBMA Interface

Creating an NBMA Static Map

Assigning Descriptions to Interfaces

Sending Interface Descriptions to AAA

Assigning Descriptions to Virtual Paths
Exporting ATM 1483 Subinterface Descriptions

Configuring Individual ATM PVC Parameters

Benefits
Creating Control PVCs
Creating Data PVCs
Configuring the Service Category for Data PVCs
Configuring Encapsulation for Data PVCs
Configuring F5 OAM for Data PVCs
Configuring Inverse ARP for Data PVCs

Configuring ATM VC Classes

Precedence Levels

Precedence Levels for Static PVCs
Precedence Levels for Dynamic PVCs
Precedence Level Examples

Upgrade Considerations

Configuring VC Classes

Assigning VC Classes to Individual PVCs

Assigning VC Classes to ATM Major Interfaces

Assigning VC Classes to Static ATM 1483 Subinterfaces

Assigning VC Classes to Base Profiles for Bulk-Configured VC Ranges

Precedence Level Examples for Assigning VC Classes

Example 1: Explicitly Changing the Service Category
Example 2: Changing the Encapsulation Method in the VC Class
Example 3: Effect of Using the atm pvc Command
Example 4: Overriding RADIUS Values

Configuring Dynamic ATM 1483 Subinterfaces

Monitoring ATM

Setting Statistics Baselines
Displaying Interface Rate Statistics for ATM VCs and ATM VPs
Using ATM show Commands

Configuring Frame Relay

Framing
Error Frames
Unicast and Multicast Addressing
User-to-Network and Network-to-Network Interfaces

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure Frame Relay

Configuring Frame Relay

End-to-End Fragmentation and Reassembly

Frame Fragmentation
Frame Reassembly
Map Class
Configuring End-to-End Fragmentation

Monitoring Frame Relay

Configuring Multilink Frame Relay

T1/E1 Connections
MLFR Link Integrity Protocol
Interface Stacking

Platform Considerations

Module Requirements
Interface Specifiers

Supported MLFR Features

Unsupported MLFR Features

Before You Configure MLFR

Configuration Tasks

Configuration Example
Configuring Frame Relay Versus MLFR

Monitoring MLFR

Configuring Upper-Layer Protocols over Static Ethernet Interfaces

Upper-Layer Protocols over Static Ethernet Overview

Upper-Layer Protocols over Static Ethernet Platform Considerations

Module Requirements
Interface Specifiers

Upper-Layer Protocols over Static Ethernet References

Configuring IP over a Static Ethernet Interface

Configuring PPPoE over a Static Ethernet Interface

Configuring IP and MPLS over a Static Ethernet Interface

Configuring IP, MPLS, and PPPoE over Ethernet

L2TP and Ethernet

Multinetting and Ethernet

Monitoring Upper-Level Protocols over Ethernet

Configuring VLAN and S-VLAN Subinterfaces

VLAN Overview

S-VLAN Overview

VLAN and S-VLAN Platform Considerations

Module Requirements
Interface Specifiers

VLAN and S-VLAN References

Creating a VLAN Subinterface

Creating a VLAN Major Interface
Configuring IP over VLAN
Configuring PPPoE over VLAN
Configuring MPLS over VLAN
Configuring IP over VLAN and PPPoE over VLAN

Configuring an S-VLAN Subinterface

Configuring an S-VLAN Subinterface
Configuring PPPoE over an S-VLAN

Configuring S-VLAN Tunnels for Layer 2 Services over MPLS

Advantages
Interface Stacking
Configuration Example

S-VLAN Oversubscription

Monitoring VLAN and S-VLAN Subinterfaces

Displaying Interface Rate Statistics for VLAN Subinterfaces
Using Ethernet show Commands

Configuring 802.3ad Link Aggregation and Link Redundancy

802.3ad Link Aggregation for Ethernet Overview

LACP
Higher-Level Protocols
Load Balancing and QoS
Ethernet Link Aggregation and MPLS

802.3ad Link Aggregation Platform Considerations

Module Requirements
Interface Specifiers

802.3ad Link Aggregation References

Configuring 802.3ad Link Aggregation

Configuring an Ethernet Physical Interface
Configuring a LAG Bundle
Configuring IP for a LAG Bundle
Configuring a VLAN Subinterface for a LAG Bundle
Configuring a PPPoE Subinterface for a LAG Bundle
Configuring MPLS for a LAG Bundle

Example: Configuring an IP Interface for a LAG Bundle

Example: Configuring a PPPoE Subinterface for a LAG Bundle

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

Example: Configuring MPLS for a LAG Bundle

Example: Configuring MPLS over a VLAN for a LAG Bundle

Ethernet Link Redundancy Overview

Ethernet Link Redundancy Configuration Models

Ethernet Link Redundancy Configuration Diagrams

Ethernet Link Redundancy Behavior

Link Failure and Acquisition

Protecting Against Physical Link Failure
Protecting Against Virtual Link Failure
Reverting After a Failover

LACP Configuration and Member Link Behavior

Member Link with Non-LAG Partner

Ethernet Link Redundancy and RSTP
Acquiring Initial Links
Detecting Failures
Failing Over

Configuring Ethernet Link Redundancy

Monitoring 802.3ad Link Aggregation

Configuring IEEE 802.3ah OAM Link-Fault Management

Ethernet OAM Link-Fault Management Overview

Ethernet OAM Link-Fault Management Platform Considerations

Module Requirements
Interface Specifiers

Ethernet OAM Link-Fault Management References

OAM Messages

OAM Elements Overview

OAM Sublayer

Control Block
Multiplexer
Parser

OAM Feature Overview

OAM Discovery Feature

Information OAM PDU Components
Transmission Settings for Information OAM PDUs

OAM Link Monitoring Feature

Supported Error Events for Tracking Link Faults
Actions Performed on Exceeding Threshold Values

OAM Remote Fault Detection Feature

Link Fault
Dying Gasp
Critical Event

OAM Remote and Local Loopback Feature

Interrelationship of OAM Link-Fault Management with Ethernet Subsystems

Guidelines for Configuring 802.3ah OAM Link-Fault Management

Configuring 802.3ah OAM Link-Fault Management

Example: Configuring 802.3ah OAM Link-Fault Management and Enabling Remote Failure Monitoring on an Interface

Example: Enabling Remote Loopback Support on the Local Interface

Monitoring OAM Link-Fault Management Discovery Settings for an Interface

Monitoring OAM Link-Fault Management Statistics for an Interface

Monitoring OAM Link-Fault Management Configuration for an Interface

Monitoring OAM Link-Fault Management Sessions on All Configured Interfaces

Configuring Point-to-Point Protocol

Error Frames

Link Control Protocol

LCP Negotiation Parameters
Validation of LCP Peer Magic Number

B-RAS Support

Authentication

Rate Limiting for PPP Control Packets

Extensible Authentication Protocol

EAP Packet Retransmission

EAP Behavior in an L2TP Environment

When the E Series Router Acts as a LAC
When the E Series Router Acts as an LNS

Limitations

Performance

Remote Peer Scenarios During Negotiation of PPP Options

IPCP Lockout and Local IP Address Pool Restoration

IPCP Negotiation with Optional Peer IP Address

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure PPP

Configuration Tasks

Optional Configuration Tasks

Configuring PPP Authentication

PPP Accounting Statistics

Monitoring PPP Interfaces

Troubleshooting

Configuring Multilink PPP

Application
MLPPP LCP Extensions
MLPPP Link Selection

Platform Considerations

Module Requirements
Interface Specifiers

Supported MLPPP Features

Unsupported MLPPP Features

Before You Configure Static MLPPP

Configuring Static MLPPP

Configuration Example
Contextual Command Differences
Configuring Authentication
Configuring Other PPP Attributes

Configuring Dynamic MLPPP

Configuring MLPPP Fragmentation and Reassembly

Application

Supported Configurations

Module Requirements

Link Configuration Parameters

Bundle Validation and Configuration Guidelines

Guidelines for MLPPP Fragmentation
Guidelines for MLPPP Reassembly

Bundle Validation Failure

Recovering from Bundle Validation Failure

Configuring Fragmentation and Reassembly for Static MLPPP

Static MLPPP over ATM 1483 Example

Configuring Fragmentation and Reassembly for Dynamic MLPPP

Dynamic MLPPP over PPPoE Example
Dynamic MLPPP over L2TP Example

Configuring Fragmentation and Reassembly for MLPPP Bundles

Configuring Multiclass MLPPP

Monitoring MLPPP

Configuring Multiclass Multilink PPP

Multiclass MLPPP Overview

Multiclass MLPPP Fragmentation and Reassembly
Multiclass MLPPP Configuration Guidelines

Multiclass MLPPP Traffic Classes Overview

Multiclass MLPPP LCP Extensions Overview

Multiclass MLPPP Platform Considerations

Module Requirements
Interface Specifiers

Multiclass MLPPP References

Configuring Multiclass MLPPP

Enabling Multiclass MLPPP

Configuring Traffic Classes on Multiclass MLPPP Interfaces

Configuring Fragmentation on Multiclass MLPPP Interfaces

Configuring Reassembly on Multiclass MLPPP Interfaces

Example: Configuring Multiclass MLPPP on a Dynamic Interface

Example: Configuring Multiclass MLPPP on a Static Interface

Monitoring Multiclass MLPPP

Configuring Packet over SONET

POS Features
SONET/SDH

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure POS

Configuration Tasks

Monitoring POS

Configuring Point-to-Point Protocol over Ethernet

PPPoE Stages

Discovery
Session

PPPoE Service Name Tables

Features
Table Structure
Enabling the Service Name Table for Use

Using the PPPoE Remote Circuit ID to Identify Subscribers

Application

PPPoE Remote Circuit ID Capture

PPPoE Remote Circuit ID Format

Remote Circuit ID Delimiter
Format for dsl-forum-1 Keyword
Format Examples for dsl-forum-1 Keyword

Use by RADIUS or L2TP

System Event Log

PPPoE MTU Configuration

Platform Considerations

Module Requirements
Interface Specifiers

Access Nodes in Ethernet Aggregation Networks Overview

ATM-to-Ethernet Interworking Overview

Before You Configure PPPoE

Configuring PPPoE over ATM

Processing of IWF PPPoE Sessions with Duplicate MAC Addresses

Guidelines for Configuring Duplicate Protection for IWF PPPoE Sessions

Configuration Examples for ATM-to-Ethernet Interworking Functions

Single DSLAM Connected to a PPPoE Access Concentrator Example
Multiple DSLAMs Connected to a PPPoE Access Concentrator Example

Configuring PPPoE for Ethernet Modules

PPPoE Interface and Subinterface Limits
Configuring IPv4 and IPv6 over PPPoE with VLAN
Configuring PPPoE Without VLANs

Configuring PADM Messages

Configuring PADN Messages

Configuring PPPoE Service Name Tables

Creating and Populating PPPoE Service Name Tables

Enabling PPPoE Service Name Tables for Use with Static Interfaces

PPPoE over ATM Configurations
PPPoE over Ethernet Configurations

Enabling PPPoE Service Name Tables for Use with Dynamic Interfaces

Configuring PADS Packet Content

Configuring PPPoE Remote Circuit ID Capture

Monitoring PPPoE

Troubleshooting

Configuring Bridged IP

Proxy ARP
DHCP

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure Bridged IP

Configuring Bridged IP

Configuring Bridged Ethernet

Bridged Ethernet Application
Assigning MAC Addresses
VLAN and S-VLAN Configurations

Platform Considerations

Module Requirements
Interface Specifiers

Configuring Bridged Ethernet

Configuring IP with PPPoE Terminated at the Router
Alternative Configuration

Configuring VLANs over Bridged Ethernet

Configuring VLAN Subinterfaces over Bridged Ethernet

Configuring Higher-Level Protocols over VLANs

Configuring IP over VLAN
Configuring PPPoE over VLAN
Configuring MPLS over VLAN

Configuring S-VLANs over Bridged Ethernet

Configuring S-VLAN Subinterfaces over Bridged Ethernet
Configuring Higher-Level Protocols over S-VLANs

Configuring the MTU Size for Bridged Ethernet

Monitoring Bridged Ethernet

Configuring Transparent Bridging

How Transparent Bridging Works
Bridge Groups and Bridge Group Interfaces
Bridge Interface Types and Supported Configurations
Subscriber Policies
Concurrent Routing and Bridging
Transparent Bridging and VPLS
Unsupported Features

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure Transparent Bridging

Configuration Tasks

Creating Bridge Groups
Configuring Optional Bridge Group Attributes
Configuring Bridge Group Interfaces
Configuring Subscriber Policies
Enabling Concurrent Routing and Bridging
Configuring Explicit Routing

Configuration Examples

Example 1: Bridging with Bridged Ethernet
Example 2: Bridging with VLANs

Monitoring Transparent Bridging

Setting Statistics Baselines
Removing Dynamic MAC Address Entries
Monitoring Bridge Groups
Monitoring Bridge Interfaces
Monitoring Subscriber Policies

Configuring Cisco HDLC

Framing
Error Frames
SLARP Keepalive

Platform Considerations

Module Requirements
Interface Specifiers

Before You Configure Cisco HDLC

Configuration Tasks

Optional Tasks
Configuration Example

Monitoring Cisco HDLC

Configuring Dynamic Interfaces

Autodetection

Types of Dynamic Interfaces

Upper-Layer Dynamic Interface Configurations

RADIUS Authentication

ATM Oversubscription for Dynamic Interfaces

How Oversubscription Works

Static ATM 1483 Subinterfaces

Example

Bulk-Configured VC Ranges

Combination of Static ATM 1483 Subinterfaces and Bulk-Configured VC Ranges

Ethernet Oversubscription for Dynamic Interfaces

Platform Considerations

Module Requirements
Interface Specifiers

About Configuring Dynamic Interfaces over Static ATM

About Configuring RADIUS for Dynamic Interfaces

subscriber Command

Authenticating Subscribers on Dynamic Bridged Ethernet over Static ATM Interfaces

Configuration Method Using subscriber Command
Configuration Method Using Subscriber Management Application

Placing Dynamic IP Routes in the Routing Table

auto-configure Command

Encapsulation Type Lockout

Benefits
How Encapsulation Type Lockout Works
Encapsulation Type Lockout Based on DSL Forum VSAs for IWF PPPoE Sessions
Guidelines for Configuring Encapsulation Type Lockout for PPPoE sessions
Guidelines for Configuring Encapsulation Type Lockout for IWF PPPoE Sessions

atm pvc Command

Configuration Example for Encapsulation Type Lockout for IWF PPPoE Sessions

Configuring PPP and PPPoE Dynamic Interfaces over Static ATM

Configuring a PPP or PPPoE Dynamic Interface
Terminating Stale PPPoA Subscribers and Restarting LCP Negotiations

Configuring PPPoE Dynamic Interfaces over PPPoE Static Interfaces

Configuring Dynamic PPPoE over Static PPPoE with ATM Interface Columns

Configuring Dynamic PPPoE over Static PPPoE with Ethernet Interface Columns

Configuring Dynamic PPPoE over Static PPPoE with Ethernet and VLAN Interface Columns

Configuring IPv4 and IPv6 over Static and Dynamic PPPoE

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

S-VLAN Oversubscription

Configuring Encapsulation Type Lockout for PPPoE Clients

Differences from Lockout Configuration for PPPoE over Static ATM
Configuration Tasks
Configuring and Verifying Lockout for PPPoE Clients
Clearing the Lockout Condition for a PPPoE Client

Configuring IPoA Dynamic Interfaces

Configuring a Dynamic IPoA Interface

Configuring Bridged Ethernet Dynamic Interfaces

Configuring a Dynamic Bridged Ethernet Interface

Configuring Subscriber Management for IP Subscribers on Dynamic Bridged Ethernet Interfaces

Configuration Example Using subscriber Command
Equivalent Configuration Example Using IP Subscriber Management

Configuring a Dynamic Interface from a Profile

Profile Considerations

Profile Characteristics

Bridged Ethernet Characteristics
IP Characteristics
IPv6 Characteristics
L2TP Characteristics
MLPPP and PPP Characteristics
PPPoE Characteristics
VLAN Characteristics

Working with Profiles

Configuring a Profile

Assigning a Profile to an Interface

Profile Configuration Examples

Scripts and Macros

Monitoring Upper-Layer Dynamic Interfaces and Profiles

Troubleshooting PPP and PPPoE Dynamic Interfaces

Configuring Dynamic Interfaces Using Bulk Configuration

Bulk Dynamic Interface Configurations

ATM Oversubscription for Bulk-Configured VC Ranges

Bulk-Configured VC Ranges

Example

Combination of Static ATM 1483 Subinterfaces and Bulk-Configured VC Ranges

Example

Platform Considerations

Module Requirements
Interface Specifiers

Configuring ATM 1483 Dynamic Subinterfaces

About Configuring Dynamic ATM 1483 Subinterfaces

Overview and Benefits

ATM 1483 Base Profiles

Nested Profile Assignments

Additional Profile Characteristics for Upper Interfaces

Bulk Configuration of VC Ranges

Bulk Configuration and VC Classes

Bulk Configuration and CAC

Dynamic Interface Creation

Overriding Base Profile Assignments

Changing VC Subranges

Static ATM Interfaces Within VC Subranges

Terminating Stale PPPoA Subscribers and Restarting LCP Negotiations

Authenticating Subscribers on Dynamic Bridged Ethernet over Dynamic ATM Interfaces

Configuration Method Using atm atm1483 subscriber Command
Configuration Method Using Subscriber Management Application

Configuring a Dynamic ATM 1483 Subinterface

Configuring Overriding Profile Assignments

Assigning an Overriding Profile to an ATM PVC
Removing an Overriding Profile Assignment from an ATM PVC
Removing Overriding Profile Assignments from a VC Range or VC Subrange

Changing VC Subranges

Adding VC Subranges
Removing VC Subranges
Modifying VC Subranges
Merging VC Subranges
Changing the Administrative State of VC Subranges

Configuring Static ATM Interfaces Within VC Subranges

Creating Static ATM Interfaces Within VC Subranges
Creating VC Subranges That Include Static ATM Interfaces

Configuring VLAN Dynamic Subinterfaces

About Configuring Dynamic VLAN Subinterfaces

Overview and Benefits
VLAN Base Profiles
Nested Profile Assignments
Additional Profile Characteristics for Upper Interfaces
Bulk Configuration of VLAN Ranges
Bulk Configuration of VLAN Ranges Using Agent-Circuit-Identifier Information
Dynamic Interface Creation
Overriding Base Profile Assignments
Changing VLAN Subranges
Static VLAN Subinterfaces Within VLAN Subranges

Configuring a Dynamic VLAN Subinterface

Configuring Dynamic VLAN Subinterfaces Based on Agent Circuit Identifier Information

Configuring Overriding Profile Assignments for VLAN Major Interfaces

Removing an Overriding Profile Assignment from a VLAN
Removing Overriding Profile Assignments from a VLAN Range or VLAN Subrange

Changing VLAN Subranges

Adding VLAN Subranges
Removing VLAN Subranges
Modifying VLAN Subranges
Merging VLAN Subranges
Changing the Administrative State of VLAN Subranges

Configuring Static VLAN Subinterfaces Within VLAN Subranges

Creating Static VLAN Subinterfaces Within VLAN Subranges
Creating VLAN Subranges That Include Static VLAN Subinterfaces

Monitoring Dynamic Interfaces and Profiles

Index