Juniper Junos MPLS and VPNS

Skills Gained

• After successfully completing this course, you should be able to:
• Explain common terms relating to MPLS.
• Explain routers and the way they forward MPLS packets.
• Explain packet flow and handling through a label-switched path (LSP).
• Describe the configuration and verification of MPLS forwarding.
• Understand the information in the Label Information Base.
• Explain the two label distribution protocols used by the Junos OS.
• Configure and troubleshoot RSVP-signaled and LDP-signaled LSPs.
• Explain the constraints of both RSVP and LDP.
• Explain the path selection process of RSVP without the use of the Constrained Shortest Path First (CSPF) algorithm.
• Explain the Interior Gateway Protocol (IGP) extensions used to build the Traffic Engineering Database (TED).
• Describe the CSPF algorithm and its path selection process.
• Describe administrative groups and how they can be used to influence path selection.
• Describe the default traffic protection behavior of RSVP-Signaled LSPs.
• Explain the use of primary and secondary LSPs.
• Explain LSP priority and preemption.
• Describe the operation and configuration of fast reroute.
• Describe the operation and configuration of link and node protection.
• Describe the LSP optimization options.
• Explain the purpose of several miscellaneous MPLS features.
• Explain the definition of the term "Virtual Private Network".
• Describe the differences between provider-provisioned and customer-provisioned VPNs.
• Describe the differences between Layer 2 VPNs and Layer 3 VPNs.
• Explain the features of provider-provisioned VPNs supported by the Junos OS.
• Explain the roles of Provider (P) routers, Provider Edge (PE) routers, and Customer Edge (CE) routers.
• Describe the VPN-IPv4 address formats.
• Describe the route distinguisher use and formats.
• Explain the RFC 4364 control flow.
• Create a routing instance, assign interfaces, create routes, and import and export routes within the routing instance using route distinguishers and route targets.
• Explain the purpose of BGP extended communities and how to configure and use these communities.
• Describe the steps necessary for proper operation of a PE to CE dynamic routing protocol.
• Configure a simple Layer 3 VPN using a dynamic CE-PE routing protocol.
• Describe the routing-instance switch.
• Explain the issues with the support of traffic originating on multiaccess VPN routing and forwarding table (VRF table) interfaces.
• Use operational commands to view Layer 3 VPN control exchanges.
• Use operational commands to display Layer 3 VPN VRF tables.
• Monitor and troubleshoot PE-CE routing protocols.
• Describe the four ways to improve Layer 3 VPN scaling.
• Describe the three methods for providing Layer 3 VPN customers with Internet access.
• Describe how the auto-export command and routing table groups can be used to support communications between sites attached to a common PE router.
• Describe the flow of control and data traffic in a hub-and-spoke topology.
• Describe the various Layer 3 VPN class-of-service (CoS) mechanisms supported by the Junos OS.
• Explain the Junos OS support for generic routing encapsulation (GRE) and IP Security (IPsec) tunnels in Layer 3 VPNs.
• Describe the flow of control traffic and data traffic in a next-generation MVPN.
• Describe the configuration steps for establishing a next-generation MVPN.
• Monitor and verify the operation of next-generation MVPNs.
• Describe the purpose and features of a BGP Layer 2 VPN.
• 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 and configure circuit cross-connect (CCC) MPLS interface tunneling.
• 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 and LDP VPLS.
• Troubleshoot VPLS.
• Describe the Junos OS support for carrier of carriers.
• Describe the Junos OS support for interprovider VPNs.