This three-day course is designed to provide students with MPLS-based Layer 3 virtual private network (VPN) knowledge and configuration examples.

The course includes an overview of MPLS Layer 3 VPN concepts, scaling Layer 3 VPNs, Internet access, Interprovider L3VPNs, and Multicast for Layer 3 VPNs.

This course also covers Junos operating system-specific implementations of Layer 3 VPNs. This course is based on the Junos OS Release 15.1R2.9.

Through demonstrations and hands-on labs, students will gain experience in configuring and monitoring the Junos OS and in device operations.

JL3V is an advanced-level course.

After successfully completing this course, you should be able to:

•    Describe the value of MPLS VPNs.
•    Describe the differences between provider-provisioned VPNs and customer-provisioned VPNs.
•    Describe the differences between Layer 2 VPNs and Layer 3 VPNs.
•    List the provider-provisioned MPLS VPN features supported by the Junos OS software.
•    Describe the roles of a CE device, PE router, and P router in a BGP Layer 3 VPN.
•    Describe the format of the BGP routing information, including VPN-IPv4 addresses and route distinguishers.
•    Describe the propagation of VPN routing information within an AS.
•    List the BGP design constraints to enable Layer 3 VPNs within a provider network.
•    Explain the operation of the Layer 3 VPN data plane within a provider network.
•    Create a routing instance, assign interfaces to a routing instance, create routes in a routing instance, and import/export routes from a routing instance using route distinguishers/route targets.
•    Describe the purpose of BGP extended communities, configure extended BGP extended communities, and use BGP extended communities.
•    List the steps necessary for proper operation of a PE-CE dynamic routing protocol.
•    List the troubleshooting and monitoring techniques for routing instances.
•    Explain the difference between the bgp.l3vpn table and the inet.0 table of a routing instance.
•    Monitor the operation of a CE-PE dynamic routing protocol.
•    Explain the operation of a PE multi-access interface in a Layer 3 VPN and list commands to modify that behavior.
•    Describe ways to support communication between sites attached to a common PE router.
•    Provision and troubleshoot hub-and-spoke Layer 3 VPNs,
•    Describe the flow of control traffic and data traffic in a hub-and-spoke Layer 3 VPN.
•    Describe QoS mechanisms available in L3VPNs.
•    Configure L3VPN over GRE tunnels.
•    Describe the RFC 4364 VPN options.
•    Describe the carrier-of-carriers model.
•    Configure the carrier-of-carriers and "Option C" configuration.
•    Describe the flow of control and data traffic in a draft-rosen multicast VPN.
•    Describe the configuration steps for establishing a draft-rosen multicast VPN.
•    Monitor and verify the operation of draft-rosen multicast VPNs.
•    Describe the flow of control traffic and data traffic in a next-generation multicast VPN.
•    Describe the configuration steps for establishing a next-generation multicast VPN.
•    Describe the configuration steps for establishing a next-generation multicast VPN.
•    Monitor and verify the operation of next-generation multicast VPNs.
•    Describe the flow of control traffic and data traffic when using MPVNs for Internet multicast.
•    Describe the configuration steps for enabling internet multicast using MVPNs.
•    Monitor and verify the operation of MVPN internet multicast.

This course benefits individuals responsible for configuring and monitoring devices running the Junos OS.

Students should have intermediate-level networking knowledge and an understanding of OSPF, ISIS, BGP, and Junos policy. Students should have experience configuring MPLS label-switched paths using Junos.

Students should also attend the following courses prior to attending this class:

Introduction to the Junos Operating System (IJOS),
Junos Routing Essentials (JRE), 
Junos Intermediate Routing (JIR),
Junos MPLS Fundamentals (JMF)

Day 1

Chapter 1:       Course Introduction

Chapter 2:       MPLS VPNs

•    MPLS VPNs
•    Provider-Provisioned VPNs

Chapter 3:       Layer 3 VPNs

•    Layer 3 VPN Terminology
•    VPN-IPv4 Address Structure
•    Operational Characteristics

Chapter 4:       Basic Layer 3 VPN Configuration

•    Preliminary Steps
•    PE Router Configuration
•    Lab: Layer 3 VPN with Static and BGP Routing

Chapter 5:       Layer 3 VPN Scaling and Internet Access

•    Scaling Layer 3 VPNs
•    Public Internet Access Options
•    Lab: LDP over RSVP Tunnels and Public Internet Access

Day 2

Chapter 6:       Layer 3 VPNs – Advanced Topics

•    Exchanging Routes between Routing Instances
•    Hub-and-Spoke Topologies
•    Layer 3 VPN CoS Options
•    Layer 3 VPN and GRE Tunneling Integration
•    Layer 3 VPN and IPsec Integration
•    Layer 3 VPN Egress Protection
•    BGP prefix-independent convergence (PIC) edge for MPLS VPNs
•    VRF Localization
•    Provider Edge Link Protection
•    Support for configuring more than 3 million L3VPN Labels
•    Lab: GRE Tunneling

Chapter 7:       Interprovider Backbones for Layer 3 VPNs

•    Hierarchical VPN Models
•    Carrier-of-Carriers Model
•    Option C Configuration
•    Lab: Carrier of Carrier Layer 3 VPNs

Chapter 8:       Troubleshooting Layer 3 VPNs

•    Working with Multiple Layers
•    Troubleshooting Commands on a PE Device
•    Multi-Access Interfaces in Layer 3 VPNs
•    PE and CE-based Traceroutes
•    Layer 3 VPN Monitoring Commands
•    Lab: Troubleshooting Layer 3 VPNs

Day 3

Chapter 9:       Draft Rosen Multicast VPNs

•    Multicast Overview
•    Draft Rosen MVPN Overview
•    Draft Rosen MVPN Operation
•    Configuration
•    Monitoring

Chapter 10:     Next Generation Multicast VPNs

•    Multicast VPN Overview
•    Next-Generation MVPN Operation
•    Configuration
•    Monitoring
•    Internet Multicast
•    Ingress Replication
•    Internet Multicast Signaling and Data Plane
•    Configuring MVPN Internet Multicast
•    Monitoring MVPN Internet Multicast
•    Lab: MVPN Internet Multicast