Can you complete this GRE Tunneling lab?
GNS3 Topology:
GNS3 course:

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You need to know GRE for the CCNA exam.

Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco Systems that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links over an Internet Protocol network.

  • David Bombal