Which control-plane technology allows the same subnet to exist across multiple network locations?

3 thoughts on “Which control-plane technology allows the same subnet to exist across multiple network locations?”

1. Vxlan can be considered as an encapsulation technology, but I think Jakob may be right, It is lisp which uses rloc to allow multiple location mapping to same subnet.

   The decoupling of the endpoint identity from its location allows addresses in the same IP subnetwork to be available behind multiple Layer 3 gateways in disparate network locations.

   https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#Operational_Planes

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2. Correct answer is A

   LISP belong to the control and not VXLAN which is part of the data plane.
   See: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#Operational_Planes

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   1. Jakob, I am not sure about LISP.
      VXLAN allows same subnet to be extended between locations over L3.
      Also VXLAN has its own control plane (multicast / MPBGP).

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