A network administrator is troubleshooting a DMVPN setup between the hub and the spoke. Which action should the administrator take before troubleshooting the IPsec configuration?
A) Verify the GRE tunnels.
B) Verify ISAKMP.
C) Verify NHRP.
D) Verify crypto maps.

Question

Quizplus · Accepted Answer

Before troubleshooting the IPsec configuration, the administrator should verify the GRE tunnels to ensure that the underlying transport is functioning correctly.

A Network Administrator Is Troubleshooting a DMVPN Setup Between the Hub