This two-day course is designed to provide students with MPLS-based Layer 2 virtual private network (VPN) knowledge and configuration examples. The course includes an overview of MPLS Layer 2 VPN concepts, such as BGP Layer 2 VPNs, LDP Layer 2 circuits, FEC 129 BGP autodiscovery, virtual private LAN service (VPLS), Ethernet VPN (EVPN), and Inter-AS Layer 2 VPNs.

This course also covers Junos operating system-specific implementations of Layer 2 VPN instances, VPLS, and EVPNs. 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.

Junos Layer 2 VPNs (JL2V) is an advanced-level course.

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

•    Define the term virtual private network.
•    Describe the business drivers for MPLS VPNs.
•    Describe the differences between Layer 2 VPNs and Layer 3 VPNs.
•    List advantages for the use of MPLS Layer 3 VPNs and Layer 2 VPNs.
•    Describe the roles of a CE device, PE router, and P router in a BGP Layer 2 VPN.
•    Explain the flow of control traffic and data traffic for a BGP Layer 2 VPN.
•    Configure a BGP Layer 2 VPN and describe the benefits and requirements of over-provisioning.
•    Monitor and troubleshoot a BGP Layer 2 VPN.
•    Explain the BGP Layer 2 VPN scaling mechanisms and route reflection.
•    Describe the Junos OS BGP Layer 2 VPN CoS support.
•    Describe the flow of control and data traffic for an LDP Layer 2 circuit.
•    Configure an LDP Layer 2 circuit.
•    Monitor and troubleshoot an LDP Layer 2 circuit.
•    Describe the operation of FEC 129 BGP autodiscovery for Layer 2 VPNs.
•    Configure a FEC 129 BGP autodiscovery Layer 2 VPN.
•    Monitor and troubleshoot a FEC 129 BGP autodiscovery for Layer 2 VPNs.
•    Describe the difference between Layer 2 MPLS VPNs and VPLS.
•    Explain the purpose of the PE device, the CE device, and the P device.
•    Explain the provisioning of CE and PE routers.
•    Describe the signaling process of VPLS.
•    Describe the learning and forwarding process of VPLS.
•    Describe the potential loops in a VPLS environment.
•    Configure BGP, LDP, and FEC 129 BGP autodiscovery VPLS.
•    Troubleshoot VPLS.
•    Describe the purpose and features of Ethernet VPN.
•    Configure Ethernet VPN.
•    Monitor and troubleshoot Ethernet VPN.
•    Describe the Junos OS support for hierarchical VPN models.
•    Describe the Junos OS support for Carrier-of-Carriers VPN Option C.
•    Configure the interprovider VPN Option C.
•    Describe the Junos OS support for multisegment pseudowire for FEC 129.
•    Describe and configure circuit cross-connect (CCC).

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, IS-IS, 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 Service Provider Switching (JSPX),
Junos Intermediate Routing (JIR), and
Junos MPLS Fundamentals (JMF)

Day 1

Chapter 1:       Course Introduction

Chapter 2:       MPLS VPNs

•    MPLS VPNs
•    Provider-Provisioned VPNs

Chapter 3:       BGP Layer 2 VPNs

•    Overview of Layer 2 Provider-Provisioned VPNs
•    BGP Layer 2 VPN Operational Model: Control Plane
•    BGP Layer 2 VPN Operational Model: Data Plane
•    Preliminary BGP Layer 2 VPN Configuration
•    BGP Layer 2 Configuration
•    Monitoring and Troubleshooting BGP Layer 2 VPNs
•    Lab: BGP Layer 2 VPNs

Chapter 4:       Layer 2 VPN Scaling and CoS

•    Review of VPN Scaling Mechanisms
•    Layer 2 VPNs and CoS
•    Lab: Layer 2 VPN Scaling

Chapter 5:       LDP Layer 2 Circuits

•    LDP Layer 2 Circuit Operation
•    LDP Layer 2 Circuit Configuration
•    LDP Layer 2 Circuit Monitoring and Troubleshooting
•    FEC 129 BGP Autodiscovery Layer 2 Circuit Operation
•    FEC 129 BGP Autodiscovery Layer 2 Circuit Configuration
•    FEC 129 BGP Autodiscovery Monitoring and Troubleshooting
•    Lab: LDP Layer 2 Circuit and FEC 129 BGP Autodiscovery

Day 2

Chapter 6:       Virtual Private LAN Services

•    Layer 2 MPLS VPNs Versus VPLS
•    BGP VPLS Control Plane
•    BGP VPLS Data Plane
•    Learning and Forwarding Process
•    Loops

Chapter 7:       VPLS Configuration

•    VPLS Configuration
•    VPLS Troubleshooting
•    Lab: VPLS

Chapter 8:       Ethernet VPN (EVPN)

•    EVPN Overview
•    EVPN Control Plane
•    EVPN Operation
•    EVPN Configuration
•    EVPN Troubleshooting
•    Lab: EVPN

Appendix A:   Interprovider Backbones for Layer 2 VPNs

•    Hierarchical VPN Models
•    Carrier-of-Carriers VPN Option C
•    Interprovider VPN Option C
•    Multisegment Pseudowires

Appendix B:   Circuit Cross-Connect

•    Circuit Cross-Connect
•    Lab: Circuit Cross-Connect (optional)