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This course is designed to provide participants with MPLS-based Layer 3 virtual private network (VPN) knowledge and configuration examples. The course includes an overview of MPLS Layer 3 VPN concepts, scaling Layer 3 VPNs, Internet access, Interprovider L3VPNs, and Multicast for Layer 3 VPNs. This course also covers Junos operating system-specific implementations of Layer 3 VPNs and is based on the Junos OS Release 15.1R2.9. Through demonstrations and hands-on labs, participants will gain experience in configuring and monitoring the Junos OS and in device operations. This course benefits individuals responsible for configuring and monitoring devices running the Junos OS.

Objectives:

 Describe the value of MPLS VPNs;

 Describe the differences between provider-provisioned VPNs and customer-provisioned VPNs;

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

 List the provider-provisioned MPLS VPN features supported by the JUNOS software;

 Describe the roles of a CE device, PE router, and 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 AS;

 List the BGP design constraints to enable Layer 3 VPNs within a provider network;

 Explain the operation of the Layer 3 VPN 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 extended BGP extended communities, and use BGP extended communities;

 List the steps necessary for proper operation of a PE-CE dynamic routing protocol;

 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;

 Explain the operation of a PE mulit-access interface in a Layer 3 VPN and list commands to modify that behavior;

 Describe ways to support communication between sites attached to a common PE router;

 Provision and troubleshoot hub-and-spoke Layer 3 VPNs;

 Describe the flow of control traffic and data traffic in a hub-and-spoke Layer 3 VPN;

 Describe QoS mechanisms available in L3VPNs;

 Configure L3VPN over GRE tunnels;

 Describe the RFC 4364 VPN options;

 Describe the carrier-of-carriers model;

 Configure the carrier-of-carriers and "Option C" configuration;

 Describe the flow of control and data traffic in a draft-rosen multicast VPN;

 Describe the configuration steps for establishing a draft-rosen multicast VPN;

 Monitor and verify the operation of draft-rosen multicast VPNs;

 Describe the flow of control traffic and data traffic in a next-generation multicast VPN;

 Describe the configuration steps for establishing a next-generation multicast VPN;

 Describe the configuration steps for establishing a next-generation multicast VPN;

 Monitor and verify the operation of next-generation multicast VPNs;

 Describe the flow of control traffic and data traffic when using MPVNs for Internet multicast;

 Describe the configuration steps for enabling internet multicast using MVPNs; and

 Monitor and verify the operation of MVPN internet multicast.