Junos Layer 2 VPNs
- Référence JL2V
- Durée 2 jour(s)
- Version 21.x
Modalité pédagogique
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Classe inter à distance Prix
EUR2 610,00
hors TVA
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Résumé
Haut de pageThis three-day course is designed to provide students with the knowledge to configure and troubleshoot MPLS-based Layer 2 virtual private networks (VPN).
The course includes an overview of MPLS Layer 2 VPN concepts, such as BGP Layer 2 VPNs, LDP Layer 2 circuits, forwarding equivalence class (FEC) 129, virtual private LAN service (VPLS), Ethernet VPN (EVPN), and Inter-AS MPLS VPNs.
This course also covers Junos OS-specific implementations of Layer 2 VPN instances, VPLS, and EVPNs.
This course is based on the Junos OS Release 21.4R1.12.
The Junos Layer 2 VPNs (JL2V) course is an advanced-level course.
[Formation délivrée en anglais par Juniper]
Mise à jour : 07.03.2023
Prochaines dates
Haut de pagePublic
Haut de pageObjectifs de la formation
Haut de page- · Describe some of the different kinds of VPNs, their mechanics, and their use cases.
- · Describe the types of MPLS VPN 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 huband-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, 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.
- · 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.
Programme détaillé
Haut de page1ER JOUR
Course Introduction
Refresher—VPNs and MPLS
- · Explain the basic function and purpose of a VPN
- · Describe how MPLS uses labels to forward traffic
- · Explain the differences between MPLS layer 3 VPNs and MPLS layer 2 VPNs
The Different Flavors of Layer 2 VPN
- · Describe the purpose and creation of pseudowires
- · Define the different technical terms relating to pseudowires
- · Describe the purpose and creation of VPLS
- · Describe the purpose, creation, and advantages of EVPN
L2VPN, aka BGP‐Signaled Pseudowires
- · Define the concept of an attachment circuit, and of pseudowire encapsulation
- · Explain the importance of route targets, route distinguishers, and Site IDs
- · Explain the control plane and data plane of an L2VPN
- · Describe the contents of an L2VPN BGP packet capture
L2VPN—Configuration
- · Configure an L2VPN that accepts all Ethernet traffic
- · Configure an L2VPN that accepts specific VLAN tags
L2VPN—Troubleshooting
- · Diagnose and fix L2VPN problems caused by missing LSPs, mismatched site information, and incorrect configuration
L2VPN—Site IDs, the Label Base, and Overprovisioning
- · Explain the purpose of the Site ID and the VPN label base
- · Configure an overprovisioned L2VPN with explicit remote Site IDs
- · Configure an overprovisioned L2VPN with implicit remote Site IDs
- · Lab 1: BGP-Signaled Layer 2 VPNs
L2VPN—Advanced Concepts
- · Configure and verify L2VPN multihoming
- · Explain the purpose of Martini encapsulation
- · Configure VLAN normalization in an L2VPN
- · Configure out-of-band route reflection and route target constraint
- Lab 2: L2VPNs—Advanced Concepts
L2Circuit—LDP‐Signaled Pseudowires
- · Explain the concept of targeted LDP sessions, and the elements that L2Circuits have in common with L2VPNs
- · Configure and verify an L2Circuit
- · Describe the contents of an LDP advertisement packet capture
L2Circuit—Troubleshooting
- · Configure the Pseudowire Status TLV
- · Explain the meaning of the most frequent L2Circuit error codes
2EME JOUR
L2Circuit—Advanced Concepts
- · Describe the purpose and benefits of virtual circuit connectivity verification
- · Configure multihoming, local switching, and interworking
- Lab 3: LDP‐Signaled L2Circuits
FEC 129 Pseudowires
- · Explain the way that FEC 129 autodiscovers remote PEs and signals pseudowires
- · Configure and verify a FEC 129 pseudowire
- Lab 4: FEC 129 Pseudowires (Optional)
Virtual Private LAN Service—Introduction
- · Describe how a VPLS is built, and how it compares to a regular pseudowire
- · Explain how VPLS forwards traffic between multiple sites
- · Describe the BGP and LDP methods of signaling a VPLS
VPLS—LDP and FEC 129 Configuration and Verification
- · Configure and verify an LDP-signaled VPLS
- · Configure and verify a FEC 129 VPLS
VPLS—LDP and FEC 129 Configuration and Verification
- · Configure and verify an LDP-signaled VPLS
- · Configure and verify a FEC 129 VPLS
VPLS—The Default VLAN Mode
- · Define the four VLAN modes for VPLS
- · Define the concept of a bridge domain, and verify the default VPLS VLAN mode
VPLS—VLAN Normalization, VLAN‐Aware Instances, and Dual‐Stacked VLANs
- · Configure and verify 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
- · Deploy automated BGP VPLS Site IDs
- · Configure flood protection, MAC flap protection, and MAC limiting
- · Explain how to add IRB interfaces to a VPLS, and configure efficient traffic flooding using multicast LSPs · Describe the most important VPLS-specific troubleshooting techniques
VPLS—Multihoming
- · Configure multihomed sites in a BGP-signaled VPLS
- · Configure multihomed sites and single sites on the same PE in a BGP-signaled VPLS
- · Configure best-site multihoming in a BGP-signaled VPLS
- · Configure multihomed sites in an LDP-signaled VPLS
- Lab 5: VPLS
3EME JOUR
EVPN—Introduction
- · Explain the main disadvantages of a VPLS solution
- · Explain how EVPN overcomes these disadvantages, and enables extra features
EVPN—Using BGP to Advertise MACs and to Flood Traffic
- · Explain the meaning of an EVPN Instance
- · Describe how EVPN Type 2 routes advertise MAC addresses and MAC/IP bindings
- · Describe how EVPN Type 3 routes request to receive flooded traffic within a bridge domain
EVPN—Configuring a Single‐Homed VLAN‐ Based EVI
- · Configure a service provider network to host EVPN services
- · Configure a single-homed VLAN-based EVI
- · Verify a VLAN-based EVI
EVPN—Configuring a Single‐Homed VLAN‐ Aware Bundle EVI
- · Configure a VLAN-aware bundle EVI
- · Verify a VLAN-aware bundle EVI
EVPN—Multihoming Configuration and Type 4 Routes
- · Configure a CE and two PEs to take part in a multihomed EVPN
- · Describe the contents of the Type 4 Ethernet Segment route
- · Explain how the Type 4 route prevents layer 2 loops, using the designated forwarder election
EVPN—Multihoming Features Using Type 1 Routes
- · Describe Type 1 Ethernet Auto-Discovery PerEthernet Segment routes
- · Explain how Type 1 Per-Ethernet Segment routes prevent layer 2 loops
- · Describe how Type 1 Per-EVI routes are different from Per-ES routes
EVPN—MAC Mobility and IRB Interfaces
- · Configure and verify the EVPN MAC Mobility feature
- · Configure and verify Automatic Gateway MAC-IP Synchronization
- · Configure and verify Manual Gateway MAC-IP Synchronization
- · Configure and verify EVPN Virtual Gateway Addresses
- Lab 6: EVPN
VPLS—LDP and FEC 129 Configuration and Verification
- · Configure and verify an LDP-signaled VPLS
- · Configure and verify a FEC 129 VPLS
VPLS—The Default VLAN Mode
- · Define the four VLAN modes for VPLS
- · Define the concept of a bridge domain, and verify the default VPLS VLAN mode
VPLS—VLAN Normalization, VLAN‐Aware Instances, and Dual‐Stacked VLANs
- · Configure and verify 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
- · Deploy automated BGP VPLS Site IDs
- · Configure flood protection, MAC flap protection, and MAC limiting
- · Explain how to add IRB interfaces to a VPLS, and configure efficient traffic flooding using multicast LSPs · Describe the most important VPLS-specific troubleshooting techniques
VPLS—Multihoming
- · Configure multihomed sites in a BGP-signaled VPLS
- · Configure multihomed sites and single sites on the same PE in a BGP-signaled VPLS
- · Configure best-site multihoming in a BGP-signaled VPLS
- · Configure multihomed sites in an LDP-signaled VPLS
Pré-requis
Haut de page· 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:
- o Introduction to the Junos Operating System
- o Junos Service Provider Switching
- o Junos Intermediate Routing
- o Junos MPLS Fundamentals
Bon à savoir
Haut de pageSelf-Study Material
Appendix A: EVPN—Integration with L3VPNs
· Describe the basic functionality of an L3VPN
· Explain how EVPNs and L3VPNs integrate for optimal routing
· Describe how chained composite next hop brings efficiency to EVPN in the Packet Forwarding Engine
Appendix B: Inter‐AS MPLS VPNs
· Describe the functionality of Interprovider Options A, B, and C
· Configure and verify the Interprovider Option C method
· Describe and configure carrier-of-carriers VPNs
Appendix C: Circuit Cross‐Connect
· Use circuit cross-connect to stitch pseudowires together, and to signal pseudowires that have their own pair of dedicated RSVP LSPs
Appendix D: Multisegment Pseudowires
· Explain how a multisegment pseudowire is signaled
· Configure and verify a multisegment pseudowire
Lab 7: Inter‐AS L2VPNs
Appendix E: VPLS—Hub‐and‐Spoke Topologies
· Configure a hub-and-spoke BGP VPLS using route targets
· Configure a hub-and-spoke BGP VPLS using site ranges
· Configure a hub-and-spoke LDP VPLS using hierarchical VPLS
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- JL2V
- Junos Layer 2 VPNs
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- Formation Juniper JL2V délivrée en anglais
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