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.
Answer: A
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