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This course is designed to provide participants with MPLS-based Layer 2 virtual private network (VPN) knowledge and configuration examples. The course includes an overview of MPLS Layer 2 VPN concepts, such as BGP Layer 2 VPNs, LDP Layer 2 circuits, FEC 129 BGP autodiscovery, virtual private LAN service (VPLS), Ethernet VPN (EVPN), and Inter-AS Layer 2 VPNs. This course also covers Junos operating system-specific implementations of Layer 2 VPN instances, VPLS, and EVPNs and is based on the Junos OS Release18a. Through demonstrations and hands-on labs, participants will gain experience in configuring and monitoring the Junos OS and in device operations.

Objectives:

 Define the term virtual private network;

 Describe the business drivers for MPLS VPNs;

 Describe the differences between Layer 2 VPNs and Layer 3 VPNs;

 List advantages for the use of MPLS Layer 3 VPNs and Layer 2 VPNs;

 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 the operation of FEC 129 BGP autodiscovery for Layer 2 VPNs;

 Configure a FEC 129 BGP autodiscovery Layer 2 VPN;

 Monitor and troubleshoot a FEC 129 BGP autodiscovery for Layer 2 VPNs;

 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, LDP, and FEC 129 BGP auto discovery VPLS;

 Troubleshoot VPLS;

 Describe the purpose and features of Ethernet VPN;

 Configure Ethernet VPN;

 Monitor and troubleshoot Ethernet VPN;

 Describe the Junos OS support for hierarchical VPN models;

 Describe the Junos OS support for Carrier-of-Carriers VPN Option C;

 Configure the interprovider VPN Option C;

 Describe the Junos OS support for multisegment pseudo wire for FEC 129; and

 Describe and configure circuit cross-connect (CCC).