Junos Layer 3 VPNs

  • Duration: 3 Days (24 Hours)
  • Certified Trainers
  • Practice Labs
  • Digital Courseware
  • Access to the Recordings
  • Experience 24*7 Learner Support.

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Junos Layer 3 VPNs Training Course Overview

In this comprehensive three-day course, students will acquire in-depth knowledge and practical configuration skills for MPLS-based Layer 3 VPNs (L3VPN). The curriculum covers essential MPLS L3VPN concepts, addressing topics such as scaling L3VPNs, Internet access, interprovider L3VPNs, and multicast for L3VPNs. Specific focus is given to Junos operating system (OS) implementations of Layer 3 VPNs, with hands-on labs designed to provide participants with practical experience in configuring and monitoring L3VPNs on Junos OS devices. Utilizing Juniper Networks vMX Series devices running Junos OS Release 22.1R1.10, these labs are equally applicable to other MX Series devices, ensuring a robust and versatile learning experience.

Intended Audience For Junos Layer 3 VPNs Training

  • Network Engineers and Administrators
  • Network Architects
  • Service Provider Personnel
  • Telecommunications Professionals
  • System Integrators
  • Network Designers
  • IT Managers and Decision-Makers
  • Network Security Professionals

Learning objectives for the Junos Layer 3 VPNs training course

  • Describe the purpose and functions of MPLS VPNs.
  • Describe the differences between Layer 2 VPNs (L2VPNs) and Layer 3 VPNs
  • Describe the roles of a customer edge (CE) device, provider edge (PE) router,
    and provider (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 autonomous
    system (AS).
  • List the BGP design constraints to enable L3VPNs within a provider network.
  • Explain the operation of the L3VPN 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 BGP extended
    communities, and use BGP extended communities.
  • List the steps necessary for the proper operation of a PE-CE dynamic routing
  • 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.
  • Describe ways to support communication between sites attached to a common
    PE router.
  • Provision and troubleshoot hub-and-spoke L3VPNs.
  • Describe the flow of control traffic and data traffic in a hub-and-spoke L3VPN.
  • Describe the quality of service (QoS) mechanisms available in L3VPNs.
  • Describe seamless MPLS fundamentals.
  • Describe the carrier-of-carriers model.
  • Configure the carrier-of-carriers and “Option C” configuration.
  • Describe the flow of control traffic and data traffic in BGP MVPN.
  • Describe the configuration steps for establishing a BGP MVPN.
  • Monitor and verify the operations of BGP MVPNs.
  • Describe the flow of control traffic and data traffic when using BGP MPVNs
    for Internet multicast.
  • Describe the configuration steps for enabling Internet multicast using BGP
  • Monitor and verify the operation of BGP MVPN Internet multicast

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Benefits of taking the Junos Layer 3 VPNs training

  • In-Depth Knowledge:
    • Gain comprehensive insights into the concepts, protocols, and configurations associated with Junos Layer 3 VPNs.
  • Practical Configuration Skills:
    • Develop practical skills in configuring and managing Layer 3 VPNs using Junos operating system, enhancing hands-on experience.
  • Troubleshooting Expertise:
    • Acquire troubleshooting skills specific to Layer 3 VPNs, enabling effective resolution of issues in real-world scenarios.
  • Network Optimization:
    • Learn techniques for optimizing and scaling Layer 3 VPN deployments to meet the requirements of diverse network environments.
  • Understanding Internet Access in Layer 3 VPNs:
    • Explore how to provide Internet access within Layer 3 VPNs, a critical aspect for many enterprise and service provider deployments.
  • Interprovider L3VPNs:
    • Understand the complexities of interprovider Layer 3 VPNs, allowing for seamless connectivity across different service providers.
  • Multicast for L3VPNs:
    • Learn how to implement multicast solutions within Layer 3 VPNs, addressing specific requirements for efficient content delivery.
  • Junos OS-Specific Implementations:
    • Understand the nuances of Junos OS implementations related to Layer 3 VPNs, ensuring alignment with Juniper’s networking ecosystem.
  • Hands-On Labs:
    • Engage in hands-on labs and practical exercises that reinforce theoretical concepts, providing valuable experience in configuring and managing Layer 3 VPNs.
  • Stay Current with Juniper Technologies:
    • Stay abreast of the latest advancements in Juniper networking technologies, ensuring that skills remain relevant in dynamic networking environments.
  • Preparation for Certifications:
    • The training may serve as excellent preparation for relevant Juniper certifications, validating expertise in Layer 3 VPNs.

Junos Layer 3 VPNs Training Course Modules

Module 1: Course Introduction

  • Overview of the course and its objectives.

Module 2: Refresher—VPNs and MPLS

  • Contrast between IPsec VPNs and MPLS VPNs.
  • Contrast between L3VPNs and L2VPNs.

Module 3: Layer 3 VPNs–Overview

  • Explanation of L3VPN terminology.
  • Definition of the VPN-IPv4 address structure.

Module 4: Layer 3 VPNs—Operational Characteristics

  • Explanation of how the L3VPN control plane advertises VPN-IPv4 prefixes.
  • Explanation of how the L3VPN data plane transports traffic across a service provider’s core.

Module 5: Layer 3 VPN—Configuration

  • Description of preliminary steps for configuring an L3VPN.
  • Description of L3VPN PE configuration.
  • Lab 1: Layer 3 VPNs with Static and BGP Routing.

Module 6: Layer 3 VPN—Verification

  • Description of how to verify L3VPN operations.
  • Lab 2: Route Redistribution.

Module 7: OSPF as the PE-to-CE Protocol

  • Configuration and verification of a basic L3VPN deployment with OSPF to the CE router.
  • Explanation of the purpose of the BGP route type community and the domain ID.

Module 8: OSPF—Optimal Routing

  • Explanation and verification of the use of the DN bit and the VPN route tag to prevent control plane loops.
  • Configuration and verification of sham links to control routing decisions.

Module 9: Route Leaking

  • Description of route leaking in an L3VPN environment.

Module 10: Hub-and-Spoke Topologies

  • Description of hub-and-spoke L3VPN topologies.

Module 11: Layer 3 VPN CoS

  • Description of how to configure and use CoS with L3VPNs.

Module 12: Layer 3 VPN Protection Mechanisms

  • Explanation of how BGP PIC edge works.
  • Definition of how provider edge link protection functions.

Module 13: Layer 3 VPN Scaling

  • Description of different ways to improve L3VPN scaling.
  • Definition of L3VPN scaling guidelines.

Module 14: BGP Route Target Filtering

  • Description of the purpose of BGP route target filtering.
  • Lab 3: Additional L3VPN Scalability Techniques.

Module 15: Layer 3 VPNs and Internet Access

  • Explanation of the differences between methods of providing Internet access within an L3VPN environment.
  • Demonstration of how to configure VRF Internet access with a single connection through a use case.

Module 16: Inter-AS Layer 3 VPNs

  • Description of the functionality of Interprovider Options A, B, and C.
  • Configuration and verification of the Interprovider Option C method.

Module 17: Carrier-of-Carriers VPNs

  • Description and configuration of carrier-of-carriers VPNs.
  • Lab 4: Carrier-of-Carriers VPNs.

Module 18: Troubleshooting Layer 3 VPN—Overview

  • Explanation of basic L3VPN troubleshooting steps.
  • Definition of PE-to-CE verification methods.

Module 19: Additional Layer 3 VPN Troubleshooting

  • Explanation of how to troubleshoot MPLS-related problems in an L3VPN.
  • Explanation of how to troubleshoot BGP-related problems in an L3VPN.
  • Demonstration of how to troubleshoot forwarding plane related problems in an L3VPN.
  • Description of troubleshooting an L3VPN with a use case.
  • Lab 5: Troubleshooting L3VPNs.

Module 20: Multicast Overview

  • Description of IP multicast traffic flow and multicast components.
  • Description of multicast addressing.
  • Description of the need for RPF check in multicast networks.
  • Description of multicast routing tables.

Module 21: Introduction to IGMP

  • Explanation of the role of IGMP.
  • Description of the different versions of IGMP.

Module 22: Multicast Routing Protocols

  • Discussion of multicast routing.
  • Description of the different PIM messages.

Module 23: BGP MVPN Overview

  • Description of the overall functionality of BGP MVPNs.
  • Explanation of how BGP MVPNs operate.

Module 24: Configuring BGP MVPNs

  • Explanation of the configuration steps of BGP MVPNs.
  • Description of how to verify that a BGP MVPN is correctly working.
  • Lab 6: MVPNs.

Junos Layer 3 VPNs Training Course Prerequisites

  • Intermediate-level networking knowledge and an understanding of OSPF, IS-IS, BGP,
    and Junos policy
  • Experience configuring MPLS label-switched paths using Junos
  • Completion of the Introduction to the Junos Operating System, Junos Intermediate Routing, and the Junos MPLS Fundamentals courses

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