Course Overview
This three-day, advanced-level course provides students with the detailed knowledge required to design, configure, and troubleshoot every flavor of Layer 2 VPN available within Junos.
The course begins with a refresher of the concepts behind VPNs and MPLS. The course then introduces each type of Layer 2 VPN in turn, such as BGP-signaled and LDP-signaled pseudowires, circuit cross-connect (CCC), VPLS, and EVPN. We’ve included use cases for each technology, along with elements of consideration when choosing an appropriate solution, and extensive clarification of technical terms that have multiple meanings.
After this introduction, the course dives deep into each individual technology, offering extensive control plane and data plane explanations of how the VPN is built and maintained. After viewing a simple configuration, the student will learn how to monitor and troubleshoot the VPN, before moving on to some more advanced features of each VPN type.
The course is based on Junos 24.2R1.15.
Who should attend
This course benefits individuals responsible for configuring and monitoring devices running the Junos OS in a service provider environment, in MPLS-based data centers, and in larger enterprises.
Certifications
This course is part of the following Certifications:
Prerequisites
The prerequisites for this course include:
- Intermediate-level networking knowledge.
- An understanding of OSPF, IS-IS, BGP, and Junos routing policy.
- Experience configuring MPLS label-switched paths using Junos.
- Completion of the following courses, or equivalent knowledge:
- Introduction to the Junos Operating System (IJOS)
- Junos Service Provider Switching (JSPX)
- Junos Intermediate Routing (JIR)
- courselink=JP-JMF][/courselink]
Course Objectives
- Describe some of the different kinds of VPNs, their mechanics, and their use cases.
- Describe the types of MPLS VPNs that operate at Layer 2.
- Describe the mechanics of BGP-signaled pseudowires, also known as L2VPNs.
- Configure BGP-signaled L2VPNs with Ethernet and Ethernet-VLAN encapsulations.
- Demonstrate how to troubleshoot some of the most common BGP-signaled L2VPN configuration problems.
- Describe how BGP-signaled L2VPNs use a block of labels to bring efficiency to hub-and-spoke advertisements.
- Configure advanced BGP-signaled L2VPN features, such as multihoming, VLAN normalization, and route target constraint.
- Describe the mechanics of LDP-signaled pseudowires, also known as Layer 2 Circuits.
- Describe the causes and solutions of some of the most common L2Circuit configuration problems.
- Configure advanced LDP-signaled L2Circuit features, such as multihoming and local switching.
- Explain how the FEC 129 pseudowire method combines BGP for autodiscovery and LDP for signaling.
- Describe the purpose and mechanics of a VPLS.
- Create a VPLS instance that is signaled using BGP and demonstrate the commands that verify its status.
- Create VPLS instances that are signaled using LDP and FEC 129 and demonstrate the commands available to verify their status.
- Describe how mismatched VLAN tags are handled in a default VPLS configuration.
- Configure a VPLS to swap mismatched VLAN tags automatically and to create multiple bridge domains inside a single VPLS instance.
- Configure the most important VPLS traffic management features, including flood protection, MAC limiting, integrated routing and bridging (IRB) interfaces, and automated Site IDs.
- Configure hub-and-spoke VPLS topologies.
- Configure multihomed sites in a VPLS.
- Describe the features of Ethernet VPN and the enhancements that EVPN brings over VPLS.
- Explain how EVPNs advertise MAC addresses and how they request to receive flooded traffic within a bridge domain.
- Configure and verify a single-homed VLAN-based EVPN instance (EVI).
- Configure and verify a single-homed VLAN-aware bundle EVI.
- Configure a multihomed EVPN and explain the purpose of the EVPN Type 4 route.
- Describe the features provided by EVPN Type 1 routes.
- Describe how to use MAC Mobility and IRB interfaces in an EVPN.
- Explain how EVPNs can tightly integrate themselves into MPLS Layer 3 VPNs to provide highly efficient forwarding.
- Describe and configure various solutions that create MPLS VPNs between service providers.
- Describe the circuit cross-connect pseudowire method and explain how this old method can still have value in modern networks.
- Describe how multisegment pseudowires can create Layer 2 VPNs across autonomous system boundaries.
Follow On Courses
Course Content
- Module 01: Refresher—VPNs and MPLS
- Module 02: The Different Flavors of Layer 2 VPN
- Module 03: L2VPN, aka BGP-Signaled Pseudowires
- Module 04: L2VPN—Configuration
- Module 05: L2VPN—Troubleshooting
- Module 06: L2VPN—Site IDs, the Label Base, and Overprovisioning
- Module 07: L2VPN—Advanced Concepts
- Module 08: L2Circuit—LDP-Signaled Pseudowires
- Module 09: L2Circuit—Troubleshooting
- Module 10: L2Circuit—Advanced Concepts
- Module 11: FEC 129 Pseudowires
- Module 12: Virtual Private LAN Service—Introduction
- Module 13: VPLS—BGP Configuration and Verification
- Module 14: VPLS—LDP and FEC 129 Configuration and Verification
- Module 15: VPLS—The Default VLAN Mode
- Module 16: VPLS—VLAN Normalization, VLAN-Aware Instances, and Dual-Stacked VLANs
- Module 17: VPLS—Advanced Features and Troubleshooting
- Module 18: VPLS—Multihoming
- Module 19: EVPN—Introduction
- Module 20: EVPN—Using BGP to Advertise MACs and to Flood Traffic
- Module 21: EVPN—Configuring a Single-Homed VLAN-Based EVI
- Module 22: EVPN—Configuring a Single-Homed VLAN-Aware Bundle EVI
- Module 23: EVPN—Multihoming Configuration and Type 4 Routes
- Module 24: EVPN—Multihoming Features Using Type 1 Routes
- Module 25: EVPN—MAC Mobility and IRB Interfaces
- Self-Study Module 26: EVPN—Integration with L3VPNs
- Self-Study Module 27: Inter-AS MPLS VPNs
- Self-Study Module 28: Circuit Cross-Connect
- Self-Study Module 29: Multisegment Pseudowires
- Self-Study Module 30: VPLS—Hub-and-Spoke Topologies