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Junos MPLS and VPNs (JMV)


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  • 5 Days Course
    Service Provider

    Classroom + Online

    Course Details


    This five-day course is designed to provide students with MPLS-based virtual private network (VPN) knowledge and configuration examples. The course includes an overview of MPLS concepts such as control and forwarding plane, RSVP Traffic Engineering, LDP, Layer 3 VPNs, BGP Layer 2 VPNs, LDP Layer 2 Circuits, and virtual private LAN service (VPLS), carrier-of-carrier VPNs. This course also covers Junos operating system-specific implementations of Layer 2 control instances and active interface for VPLS. This course is based on the Junos OS Release 12.3R2.5.
    Through demonstrations and hands-on labs, students will gain experience in configuring and monitoring the Junos OS and in device operations.


    Course Level:

    JMV is an advanced-level course.


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

    • Explain common terms relating to MPLS.
    • Explain routers and the way they forward MPLS packets.
    • Explain packet flow and handling through a label-switched path (LSP).
    • Describe the configuration and verification of MPLS forwarding.
    • Understand the information in the Label Information Base.
    • Explain the two label distribution protocols used by the Junos OS.
    • Configure and troubleshoot RSVP-signaled and LDP-signaled LSPs.
    • Explain the constraints of both RSVP and LDP.
    • Explain the path selection process of RSVP without the use of the Constrained Shortest Path First (CSPF) algorithm.
    • Explain the Interior Gateway Protocol (IGP) extensions used to build the Traffic Engineering Database (TED).
    • Describe the CSPF algorithm and its path selection process.
    • Describe administrative groups and how they can be used to influence path selection.
    • Describe the default traffic protection behavior of RSVP-Signaled LSPs.
    • Explain the use of primary and secondary LSPs.
    • Explain LSP priority and preemption.
    • Describe the operation and configuration of fast reroute.
    • Describe the operation and configuration of link and node protection.
    • Describe the LSP optimization options.
    • Describe the behavior of fate sharing.
    • Describe how SRLG changes the CSPF algorithm when computing the path of a secondary LSP.
    • Explain how extended admin groups can be used to influence path selection.
    • Explain the purpose of several miscellaneous MPLS features.
    • Explain the definition of the term virtual private network.
    • Describe the differences between provider-provisioned and customer-provisioned VPNs.
    • Describe the differences between Layer 2 VPNs and Layer 3 VPNs.
    • Explain the features of provider-provisioned VPNs supported by the Junos OS.
    • Explain the roles of Provider (P) routers, Provider Edge (PE) routers, and Customer Edge (CE) routers.
    • Describe the VPN-IPv4 address formats.
    • Describe the route distinguisher use and formats.
    • Explain the RFC 4364 control flow.
    • Create a routing instance, assign interfaces, create routes, and import and export routes within the routing instance using route distinguishers and route targets.
    • Explain the purpose of BGP extended communities and how to configure and use these communities.
    • Describe the steps necessary for proper operation of a PE to CE dynamic routing protocol.
    • Configure a simple Layer 3 VPN using a dynamic CE-PE routing protocol.
    • Describe the routing-instance switch.
    • Explain the issues with the support of traffic originating on multi-access VPN routing and forwarding table (VRF table) interfaces.
    • Use operational commands to view Layer 3 VPN control exchanges.
    • Use operational commands to display Layer 3 VPN VRF tables.
    • Monitor and troubleshoot PE-CE routing protocols.
    • Describe the four ways to improve Layer 3 VPN scaling.
    • Describe the three methods for providing Layer 3 VPN customers with Internet access.
    • Describe how the auto-export command and routing table groups can be used to support communications between sites attached to a common PE router.
    • Describe the flow of control and data traffic in a hub-and-spoke topology.
    • Describe the various Layer 3 VPN class-of-service (CoS) mechanisms supported by the Junos OS.
    • Explain the Junos OS support for generic routing encapsulation (GRE) and IP Security (IPsec) tunnels in Layer 3 VPNs.
    • Describe the purpose and features of a BGP Layer 2 VPN.
    • 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 and configure circuit cross-connect (CCC) MPLS interface tunneling.
    • 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 and LDP VPLS.
    • Troubleshoot VPLS.
    • Describe the Junos OS support for carrier-of-carriers.
    • Describe the Junos OS support for interprovider VPNs.


    Day 1

    Chapter 1: Course Introduction

    Chapter 2: MPLS Fundamentals

    • MPLS Foundation
    • Terminology
    • MPLS Configuration
    • MPLS Packet Forwarding
    • Lab: MPLS Fundamentals

    Chapter 3: Label Distribution Protocols

    • Label Distribution Protocols
    • RSVP
    • LDP
    • Lab: Label Distribution Protocols

    Chapter 4: Constrained Shortest Path First

    • RSVP Behavior Without CSPF
    • CSPF Algorithm
    • CSPF Tie Breaking
    • Administrative Groups
    • Interarea Traffic Engineered LSPs
    • Lab: CSPF

    Day 2

    Chapter 5: Traffic Protection and LSP Optimization

    • Default Traffic Protection Behavior
    • Primary and Secondary LSPs
    • Fast Reroute
    • Bypass LSPs
    • LSP Optimization
    • Lab: Traffic Protection

    Chapter 6: Fate Sharing

    • Junos OS Fate Sharing
    • SRLG
    • Extended Admin Groups
    • Lab: Fate Sharing

    Chapter 7: Miscellaneous MPLS Features

    • Routing Table Integration
    • Forwarding Adjacencies
    • Policy Control over LSP Selection
    • LSP Metrics
    • Automatic Bandwidth
    • TTL Handling
    • Explicit Null Configuration
    • MPLS Pings
    • Lab: Miscellaneous MPLS Features

    Chapter 8: VPN Review

    • Overview of VPNs
    • CPE-Based VPNs
    • Provider-Provisioned

    Chapter 9: Layer 3 VPNs

    • Layer 3 VPN Terminology
    • VPN-IPv4 Address Structure
    • Operational Characteristics
    • Lab: VPN Baseline Configuration

    Day 3

    Chapter 10: Basic Layer 3 VPN Configuration

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

    Chapter 11: Troubleshooting Layer 3 VPNs

    • A Layered Approach
    • The Routing-Instance Switch
    • PE-Based and CE-Based Traceroutes
    • Viewing VRF Tables and PE-PE Signaling Flow
    • Monitoring PE-CE Routing Protocols

    Chapter 12: Layer 3 VPN Scaling and Internet Access

    • Scaling Layer 3 VPNs
    • Public Internet Access Options
    • Lab: Route Reflection and Internet Access

    Chapter 13: Layer 3 VPNs—Advanced Topics

    • Exchanging Routes Between VRF Tables
    • Hub-and-Spoke Topologies
    • Layer 3 VPN CoS Options
    • Layer 3 VPN and GRE Tunneling Integration
    • Layer 3 VPN and IPsec Integration
    • Lab: GRE Tunnel Integration

    Day 4

    Chapter 14: 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 15: Layer 2 VPN Scaling and CoS

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

    Chapter 16: LDP Layer 2 Circuits

    • LDP Layer 2 Circuit Operation
    • LDP Layer 2 Circuit Configuration
    • LDP Layer 2 Circuit Monitoring and Troubleshooting
    • Circuit Cross-Connect
    • Lab: Circuit Cross-Connect and LDP Layer 2 Circuits

    Chapter 17: Virtual Private LAN Services

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

    Day 5

    Chapter 18: VPLS Configuration

    • VPLS Configuration
    • VPLS Troubleshooting
    • Lab: VPLS

    Chapter 19: Interprovider VPNs

    • Hierarchical VPN Models
    • Junos Support of Carrier-of-Carriers Model
    • Junos Support of Carrier-of-Carrier VPN Applications
    • Lab: Carrier-of-Carrier VPNs

    Appendix A: Multicast VPNs

    • Multicast VPN Overview
    • Next-Generation MVPN Operation
    • Configuration
    • Monitoring
    • Lab: MVPNs

    Target Audience

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