Which troubleshooting step is valid in this situation?

In a new DMVPN deployment, phase 1 completes successfully.

However, phase2 experiences issues.

Which troubleshooting step is valid in this situation?
A . Temporarily remove encryption to check if the GRE tunnel is working.
B . Verify IP routing between the external IPs of the two peers is correct.
C . Remove NHRP configuration and reset the tunnels.
D . Ensure that the nodes use the same authentication method.

View Answer

Answer: A