Basic L3VPN (BGP/MPLS VPN or VPRN) configuration. Nokia (Alcatel-Lucent) & Juniper

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This time I will cover in details basic Layer 3 VPN (L3VPN or VPRN) configuration, and I decided to kill two birds with one stone by inviting Juniper vMX (read here on how to add vMX to Unetlab) to our cozy Alcatel-Lucent environment.

In this post we will configure BGP/MPLS VPN [RFC 4364] including:

  • PE-PE relationship configuration with VPN IPv4 family introduction
  • PE-CE routing configuration with both BGP and OSPF as routing protocols
  • Export policy configuration for advertising VPN routes on PE routers
  • AS override configuration
  • and many more

As a bonus track I will share with you Control Plane and Data Plane evaluation diagrams which help a lot for understanding the whole BGP VPN picture. Take your seats, there is no flying from VPNs!

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