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Difference between L2 VPN and L3VPN. How EVPN used with VxLAN and MPLS?

Last updated on July 25, 2019

        I am new to VPN technology and trying to connect and get the bigger picture after going through lot of online documents.
Here are my confusions:
  1. Differences between L2 VPN and L3 VPN. It would be better to understand from the packet structure point of view.

  2. What exactly is EVPN? Why it came into existence?

  3. EVPN along with MPLS is used to provide L2 VPN or L3 VPN or both?

  4. How is DCI achieved with all these technologies?

Sorry if the questions are too many. I would be glad if someone can clarify my doubts. Thanks.

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