Junos Layer 3 VPNs
This three-day course is designed to provide students with MPLS-based Layer 3 VPN (L3VPN) knowledge & configuration examples. The course includes an overview of MPLS L3VPN concepts, scaling L3VPNs, Internet access, inter-provider L3VPNs, & multicast for L3VPNs. This course also covers Junos operating system (OS) specific implementations of Layer 3 VPNs. The concepts are put into practice with a series of hands-on labs, allowing participants to gain experience configuring & monitoring L3VPNs on Junos OS devices. These hands-on labs utilize the Juniper Networks VMX Series devices using the Junos OS Release 22.1R1.10 & are also applicable to other MX Series devices.
Duration: 3 Days (24 Hours)
Learning Objectives:
- Explain the purpose & functions of MPLS VPNs.
- Explain the differences between Layer 2 VPNs (L2VPNs) & Layer 3 VPNs (L3VPNs).
- Explain the roles of a customer edge (CE) device, provider edge (PE) router, & provider (P) router in a BGP Layer 3 VPN.
- Explain the format of the BGP routing information, including VPN-IPv4 addresses & route distinguishers.
- Explain 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.
- Make a routing instance, assign interfaces to a routing instance, make routes in a routing instance, & import/export routes from a routing instance using route distinguishers/route targets.
- Explain the purpose of BGP extended communities, configure BGP extended communities, & use BGP extended communities.
- List the steps necessary for the proper operation of a PE-CE dynamic routing protocol.
- List the troubleshooting & monitoring techniques for routing instances.
- Explain the difference between the BGP.l3vpn table & the inet.0 table of a routing instance.
- Monitor the operation of a CE-PE dynamic routing protocol.
- Explain ways to support communication between sites attached to a common PE router.
- Provision & troubleshoot hub-&-spoke L3VPNs.
- Explain the flow of control traffic & data traffic in a hub-&-spoke L3VPN.
- Explain the quality of service (QoS) mechanisms available in L3VPNs.
- Explain seamless MPLS fundamentals.
- Explain the carrier-of-carriers model.
- Configure the carrier-of-carriers & "Option C" configuration.
- Explain the flow of control traffic & data traffic in BGP MVPN.
- Explain the configuration steps for establishing a BGP MVPN.
- Monitor & verify the operations of BGP MVPNs.
- Explain the flow of control traffic & data traffic when using BGP MPVNs for Internet multicast.
- Explain the configuration steps for enabling Internet multicast using BGP MVPNs.
- Monitor & verify the operation of BGP MVPN Internet multicast
- Intermediate-level networking knowledge & an understanding of OSPF, IS-IS, BGP, & Junos policy
- Experience configuring MPLS label-switched paths using Junos
- Completing the Introduction to the Junos Operating System, Junos Intermediate Routing, & the Junos MPLS Fundamentals courses
Audience Profile
- Individuals responsible for configuring & monitoring devices running Junos OS
Module 1: Course Introduction
Module 2: Refresher: VPNs & MPLS
Lessons
- Contrast the differences between IPsec VPNs & MPLS VPNs
- Contrast the differences between L3VPNs & L2VPNs
Module 3: Layer 3 VPNs–Overview
Lessons
- Explain L3VPN terminology
- Define the VPN-IPv4 address structure
Module 4: Layer 3 VPNs—Operational Characteristics
Lessons
- Explain how the L3VPN control plane advertises
- VPN-IPv4 prefixes across a service provider network
- Explain how the L3VPN data plane transports
- traffic between sites across a service provider's score
Module 5: Layer 3 VPN—Configuration
Lessons
- Explain the preliminary steps needed for configuring an L3VPN
- Explain the L3VPN PE configuration
Lab:
- Layer 3 VPNs with Static & BGP Routing
Module 6: Layer 3 VPN—Verification
Lessons
- Explain how to verify L3VPN operations
Lab:
- Route Redistribution
Module 7: OSPF as the PE-to-CE Protocol
Lessons
- Configure & verify a basic L3VPN deployment with OSPF to the CE router
- Explain the purpose of the BGP route type community & the domain ID
Module 8: OSPF—Optimal Routing
Lessons
- Explain & verify the use of the DN bit & the VPN route tag, which prevent control plane loops
- Configure & verify sham links to control routing decisions in networks with backdoor links
Module 9: Route Leaking
Lessons
- Explain route leaking in an L3VPN environment
Module 10: Hub-&-Spoke Topologies
Lessons
- Explain hub-&-spoke L3VPN topologies
Module 11: Layer 3 VPN CoS
Lessons
- Explain how to configure & use CoS with L3VPNs
Module 12: Layer 3 VPN Protection Mechanisms
Lessons
- Explain how BGP PIC edge works
- Define how provider edge link protection functions
Module 13: Layer 3 VPN Scaling
Lessons
- Explain different ways to improve L3VPN scaling
- Define L3VPN scaling guidelines
Module 14: BGP Route Target Filtering
Lessons
- Explain the purpose of BGP route target filtering
Lab:
- Additional L3VPN Scalability Techniques
Module 15: Layer 3 VPNs & Internet Access
Lessons
- Explain the differences between the methods of providing Internet access within an L3VPN environment
- Demonstrate how to configure VRF Internet access with a single connection through a use case
Module 16: Inter-AS Layer 3 VPNs
Lessons
- Explain the functionality of Interprovider Options A, B, & C
- Configure & verify the Interprovider Option C method
Lab:
- VPLS
Module 17: Carrier-of-Carriers VPNs
Lessons
- Explain & configure carrier-of-carriers VPNs
Lab:
- Carrier-of-Carriers VPNs
Module 18: Troubleshooting Layer 3 VPN—Overview
Lessons
- Explain basic L3VPN troubleshooting steps
- Define PE-to-CE verification methods
Module 19: Additional Layer 3 VPN Troubleshooting
Lessons
- Explain how to troubleshoot MPLS-related problems in an L3VPN
- Explain how to troubleshoot BGP-related problems in an L3VPN
- Demonstrate how to troubleshoot forwarding plane-related problems in an L3VPN
- Explain troubleshooting an L3VPN with a use case
Lab:
- Troubleshooting L3VPNs
Module 20: Multicast Overview
Lessons
- Explain IP multicast traffic flow & multicast components
- Explain multicast addressing
- Explain the need for RPF checks in multicast networks
- Explain multicast routing tables
Module 21: Introduction to IGMP
Lessons
- Explain the role of IGMP
- Explain the different versions of IGMP
Module 22: Multicast Routing Protocols
Lessons
- Discuss multicast routing
- Explain the different PIM messages
Module 23: BGP MVPN Overview
Lessons
- Explain the overall functionality of BGP MVPNs
- Explain how BGP MVPNs operate
Module 24: Configuring BGP MVPNs
Lessons
- Explain the configuration steps of BGP MVPNs
- Explain how to verify that a BGP MVPN is correctly working
Lab:
- MVPNs
JNCIP-SP certification exam
Skills measured
- Protocol-Independent Routing
- Open Shortest Path First (OSPF)
- Intermediate System to Intermediate System (IS-IS)
- Border Gateway Protocol (BGP)
- Layer 2 Bridging or VLANs
- Spanning-Tree Protocols
- Multiprotocol Label Switching (MPLS)
- IPv6
- Tunnels
- High Availability
Q: What is enterprise switching?
A: This means the enterprise network has a great core switch, with additional distribution layer switches which generally operate below it to bring all the information into the data center & after that, disseminate it out to the access layer where the end users are located & there is fewer data traffic.
Q: Is a router the switch?
A: switch connects several devices to create a network, and a router connects multiple switches, & their respective networks to form an even more extensive network. These networks may be in various locations or across multiple sites.
Q: What is Juno's Operating System?
A: Juniper Networks provides high-performance network devices that create a responsive & trusted environment for accelerating the deployment of services & applications over a single network. The Junos operating system (Junos OS) is the foundation of these high-performance networks.
Q: What is the infrastructure required to attend your training program?
A: To attend the training session, you should have operational Desktops or Laptops with the required specification and a good internet connection to access the labs.
Q: What if I miss a class on a particular day?
A: We would always recommend you attend the live session to practice & clarify the doubts instantly & get more value from your investment. However, if, due to some contingency, you have to skip the class, Radiant Techlearning will help you with the recorded session of that particular day. However, those recorded sessions are not meant only for personal consumption & NOT for distribution or commercial use.
Q: How will I be accessing the labs?
A: Radiant Techlearning has a data center containing a Virtual Training environment for participants' hands-on practice.
Participants can easily access these labs over Cloud with the help of a remote desktop connection.
Radiant virtual labs allow you to learn from anywhere in the world & in any time zone.
Q: What kind of projects are included as a part of training?
A: The learners will be enthralled as we engage them in real-world & industry Oriented projects during the training program. These projects will improve your skills & knowledge & you will gain a better experience. These real-time projects will help you a lot in your future tasks & assignments.