Junos Layer 2 VPNs Training Course Modules

Module 1: Course Introduction

• Overview of the course and its objectives.

Module 2: Refresher—VPNs and MPLS

• Explanation of the basic function and purpose of a VPN.
• Description of how MPLS uses labels to forward traffic.
• Explanation of the differences between MPLS layer 3 VPNs and MPLS layer 2 VPNs.

Module 3: The Different Flavors of Layer 2 VPN

• Description of the purpose and creation of pseudowires.
• Definition of different technical terms relating to pseudowires.
• Description of the purpose and creation of VPLS.
• Description of the purpose, creation, and advantages of EVPN.

Module 4: L2VPN, aka BGP-Signaled Pseudowires

• Definition of the concept of an attachment circuit, and pseudowire encapsulation.
• Explanation of the importance of route targets, route distinguishers, and Site IDs.
• Explanation of the control plane and data plane of an L2VPN.
• Description of the contents of an L2VPN BGP packet capture.

Module 5: L2VPN—Configuration

• Configuration of an L2VPN that accepts all Ethernet traffic.
• Configuration of an L2VPN that accepts specific VLAN tags.

Module 6: L2VPN—Troubleshooting

• Diagnosis and fixing of L2VPN problems caused by missing LSPs, mismatched site information, and incorrect configuration.

Module 7: L2VPN—Site IDs, the Label Base, and Overprovisioning

• Explanation of the purpose of the Site ID and the VPN label base.
• Configuration of an overprovisioned L2VPN with explicit remote Site IDs.
• Configuration of an overprovisioned L2VPN with implicit remote Site IDs.
• Lab 1: BGP-Signaled Layer 2 VPNs.

Module 8: L2VPN—Advanced Concepts

• Configuration and verification of L2VPN multihoming.
• Explanation of the purpose of Martini encapsulation.
• Configuration of VLAN normalization in an L2VPN.
• Configuration of out-of-band route reflection and route target constraint.
• Lab 2: L2VPNs—Advanced Concepts.

Module 9: L2Circuit—LDP-Signaled Pseudowires

• Explanation of the concept of targeted LDP sessions and elements common with L2VPNs.
• Configuration and verification of an L2Circuit.
• Description of the contents of an LDP advertisement packet capture.

Module 10: L2Circuit—Troubleshooting

• Configuration of the Pseudowire Status TLV.
• Explanation of the meaning of the most frequent L2Circuit error codes.

Module 11: L2Circuit—Advanced Concepts

• Description of the purpose and benefits of virtual circuit connectivity verification.
• Configuration of multihoming, local switching, and interworking.
• Lab 3: LDP-Signaled L2Circuits.

Module 12: FEC 129 Pseudowires

• Explanation of how FEC 129 autodiscovers remote PEs and signals pseudowires.
• Configuration and verification of a FEC 129 pseudowire.
• Lab 4: FEC 129 Pseudowires (Optional).

Module 13: Virtual Private LAN Service—Introduction

• Description of how a VPLS is built and how it compares to a regular pseudowire.
• Explanation of how VPLS forwards traffic between multiple sites.
• Description of the BGP and LDP methods of signaling a VPLS.

Module 14: VPLS—BGP Configuration and Verification

• Configuration of a BGP-signaled VPLS.
• Verification of a BGP-signaled VPLS.

Module 15: VPLS—LDP and FEC 129 Configuration and Verification

• Configuration and verification of an LDP-signaled VPLS.
• Configuration and verification of a FEC 129 VPLS.

Module 16: VPLS—The Default VLAN Mode

• Definition of the four VLAN modes for VPLS.
• Definition of the concept of a bridge domain and verification of the default VPLS VLAN mode.

Module 17: VPLS—VLAN Normalization, VLAN-Aware Instances, and Dual-Stacked VLANs

• Configuration and verification of VLAN-Aware mode.
• Configuration and verification of VLAN-Normalizing mode and NoVLAN mode.
• Configuration and verification of dual-stacked VLAN tags in VPLS.

Module 18: VPLS—Advanced Features and Troubleshooting

• Deployment of automated BGP VPLS Site IDs.
• Configuration of flood protection, MAC flap protection, and MAC limiting.
• Explanation of adding IRB interfaces to a VPLS and configuring efficient traffic flooding using multicast LSPs.
• Description of the most important VPLS-specific troubleshooting techniques.
• Lab 5: VPLS.

Module 19: VPLS—Multihoming

• Configuration of multihomed sites in a BGP-signaled VPLS.
• Configuration of multihomed sites and single sites on the same PE in a BGP-signaled VPLS.
• Configuration of best-site multihoming in a BGP-signaled VPLS.
• Configuration of multihomed sites in an LDP-signaled VPLS.
• Lab 6: EVPN.

Module 20: EVPN—Introduction

• Explanation of the main disadvantages of a VPLS solution.
• Explanation of how EVPN overcomes these disadvantages and enables extra features.

Module 21: EVPN—Using BGP to Advertise MACs and to Flood Traffic

• Explanation of the meaning of an EVPN Instance.
• Description of how EVPN Type 2 routes advertise MAC addresses and MAC/IP bindings.
• Description of how EVPN Type 3 routes request to receive flooded traffic within a bridge domain.

Module 22: EVPN—Configuring a Single-Homed VLAN-Based EVI

• Configuration of a service provider network to host EVPN services.
• Configuration of a single-homed VLAN-based EVI.
• Verification of a VLAN-based EVI.

Module 23: EVPN—Configuring a Single-Homed VLAN-Aware Bundle EVI

• Configuration of a VLAN-aware bundle EVI.
• Verification of a VLAN-aware bundle EVI.

Module 24: EVPN—Multihoming Configuration and Type 4 Routes

• Configuration of a CE and two PEs to take part in a multihomed EVPN.
• Description of the contents of the Type 4 Ethernet Segment route.
• Explanation of how the Type 4 route prevents layer 2 loops, using the designated forwarder election.

Module 25: EVPN—Multihoming Features Using Type 1 Routes

• Description of Type 1 Ethernet Auto-Discovery Per-Ethernet Segment routes.
• Explanation of how Type 1 Per-Ethernet Segment routes prevent layer 2 loops.
• Description of how Type 1 Per-EVI routes are different from Per-ES routes.

Module 26: EVPN—MAC Mobility and IRB Interfaces

• Configuration and verification of the EVPN MAC Mobility feature.
• Configuration and verification of Automatic Gateway MAC-IP Synchronization.
• Configuration and verification of Manual Gateway MAC-IP Synchronization.
• Configuration and verification of EVPN Virtual Gateway Addresses.
• Lab 6: EVPN.

Module A: EVPN—Integration with L3VPNs

• Description of the basic functionality of an L3VPN.
• Explanation of how EVPNs and L3VPNs integrate for optimal routing.
• Description of how chained composite next hop brings efficiency to EVPN in the Packet Forwarding Engine.

Module B: Inter-AS MPLS VPNs

• Description of the functionality of Interprovider Options A, B, and C.
• Configuration and verification of the Interprovider Option C method.
• Description and configuration of carrier-of-carriers VPNs.

Module C: Circuit Cross-Connect

• Use of circuit cross-connect to stitch pseudowires together and to signal pseudowires that have their own pair of dedicated RSVP LSPs.

Module D: Multisegment Pseudowires

• Explanation of how a multisegment pseudowire is signaled.
• Configuration and verification of a multisegment pseudowire.
• Lab 7: Inter-AS L2VPNs.

Module E: VPLS—Hub-and-Spoke Topologies

• Configuration of a hub-and-spoke BGP VPLS using route targets.
• Configuration of a hub-and-spoke BGP VPLS using site ranges.
• Configuration of a hub-and-spoke LDP VPLS using hierarchical VPLS.

Junos Layer 2 VPNs Training Course Prerequisites

• 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
  o Introduction to the Junos Operating System
  o Junos Service Provider Switching
  o Junos Intermediate Routing
  o Junos MPLS Fundamentals