Junos Layer 2 VPNs (JL2V)

• Individuals responsible for designing, implementing, and troubleshooting MPLS VPNs which operate at layer 2 

• Individuals who work with, or who aspire to work with, service provider networks 

• Individuals studying for the JNCIP-SP or JNCIE-SP certification exam

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

• Describe some of the different kinds of VPN, their mechanics, and their use cases 

• Discuss the types of MPLS VPN which operate at layer 2 

• Discuss the mechanics of BGP-signaled pseudowires, also known as a Layer 2 VPN (L2VPN) 

• Configure and troubleshoot BGP-signaled L2VPNs 

• Describe how and why L2VPNs advertise a range of labels 

• Configure advanced BGP-signaled L2VPN features 

• Discuss the mechanics of LDP-signaled pseudowires, also known as a Layer 2 Circuit (L2Circuit) 

• Identify and fix common L2Circuit problems 

• Configure advanced LDP-signaled L2Circuit features 

• Discuss the mechanics of FEC 129 pseudowires, which combines BGP for autodiscovery and LDP for signaling 

• Describe the purpose and mechanics of a VPLS 

• Configure and verify VPLS 

• Configure and verify different VPLS VLAN modes 

• Describe and configure VPLS advanced features, and VPLS troubleshooting 

• Configure advanced VPLS topologies 

• Describe the features and advantages of Ethernet VPN 

• Configure and verify single-homed EVPN instances 

• Explain, configure, and verify EVPN multihoming 

• Configure EVPN IRB interfaces, and other advanced EVPN concepts

Day 1

Course Introduction

Refresher: VPNs and MPLS 

• IPsec VPNs and MPLS VPNs 

• Layer 3 VPNs and layer 2 VPNs

The Different Flavors of Layer 2 VPN 

• Discuss the function and creation of pseudowires 

• Discuss the function and creation of VPLS 

• Discuss the function and creation of EVPN

L2VPN aka BGP-Signaled Pseudowires 

• Define some essential L2VPN terminology 

• Explore the control plane and data plane of an L2VPN 

• Observe an L2VPN packet capture

L2VPN Configuration and Troubleshooting 

• Configure an L2VPN which accepts all Ethernet traffic 

• Configure an L2VPN which accepts specific VLAN tags 

• Troubleshoot common L2VPN problems

L2VPN—Site IDs, The Label Base, and Overprovisioning 

• The Site ID and the VPN label 

• Overprovisioned L2VPN configuration 

Lab 1: BGP-Signaled L2VPNs

L2VPN Advanced Concepts 

• Configure and verify multihoming 

• Explain Martini encapsulation and VLAN normalization 

• Configure traffic policing, out-of-band route reflection, and route target constraint 

Lab 2: L2VPNs—Advanced Concepts

L2Circuit, aka L2DP-Signalled Pseudowires 

• Configure and verify an L2Circuit 

• Analyze a packet capture of an LDP advertisement

L2Circuit—Troubleshooting 

• Configure the Pseudowire Status TLV 

• Observe the most frequent L2Circuit error statuses

L2Circuit—Advanced Concepts 

• Enable Virtual Circuit Connectivity Verification 

• Configure multihoming, local switching, and interworking 

Lab 3: LDP-Signaled L2Circuits

Day 2

FEC 129 Pseudowires 

• Discuss the mechanics of FEC 129 

• Configure and verify a FEC 129 pseudowire 

Lab 4: FEC 129 Pseudowires (Optional)

Virtual Private LAN Service—Introduction 

• Explain how VPLS forwards traffic between multiple sites 

• Describe the three methods of signaling VPLS

VPLS—Configuration and Verification 

• Configure a BGP-signaled VPLS 

• Verify a BGP-signaled VPLS 

• Configure and verify an LDP-signaled VPLS 

• Configure and verify a FEC 129 VPLS

VPLS—The Four Modes of MAC Learning 

• Configure and verify the default VLAN mode and VLAN-Aware mode 

• Configure and verify VLAN-Normalizing mode and No-VLAN mode 

• Configure and verify dual-stacked VLAN tags in VPLS

VPLS—Advanced Features and Troubleshooting 

• Configure protection and MAC limiting in a VPLS 

• Add IRB interfaces to VPLS instances, and configure efficient traffic flooding 

• Describe VPLS-specific troubleshooting techniques

VPLS—Advanced Topologies 

• Configure hub-and-spoke VPLS 

• Configure multihomed sites in a VPLS 

Lab 5: VPLS

Day 3

EVPN—Introduction 

• Describe the advantages of EVPN over VPLS 

• Explain the structure and purpose of EVPN route Type 2 and Type 3 

EVPN—Single-Homed Configuration 

• Configure and verify a VLAN-Based EVI 

• Configure and verify a VLAN-aware bundle EVI 19 EVPN—Multihoming 

• Describe Type 4 Ethernet Segment routes, and configure multihoming 

• Describe Type 1 Ethernet Autodiscovery routes 

EVPN—Advanced Concepts and Troubleshooting 

• Configure and verify Automatic Gateway MAC-IP Synchronization 

• Describe host routes in an L3VPN 

• Configure alternative IRB methods 

• Configure advanced EVPN features and mechanics 

Lab: 6: EVPN 

The following Appendices can be covered, if time permits, and are requested by the delegate/s prior to booking:

Appendix A: Inter-AS L2VPNs (Optional) 

Appendix B: Circuit Cross-Connect (Optional)

The prerequisite skills for this course include: 

• Strong general TCP/IP knowledge 

• Junos knowledge to the JNCIA-Junos certification level 

• LDP/RSVP and routing/switching knowledge to the JNCIS-SP certification level

The following courses should be completed before attending this course, or equivalent knowledge: 

• Getting Started with Networking (eLearning) 

• Introduction to the Junos Operating System (IJOS) 

• Junos MPLS Fundamentals (JMF) 

• Junos Intermediate Routing (JIR) 

• Junos Enterprise Switching (JEX), Junos Service Provider Switching (JSPX), or both

Delegates will receive an official set of e-kit courseware approximately 1 week prior to the start of the course.