Why?

View the exhibit, which contains a screenshot of some phase-1 settings, and then answer the question below.

The VPN is up, and DPD packets are being exchanged between both IPsec gateways; however, traffic cannot pass through the tunnel.

To diagnose, the administrator enters these CLI commands:

However, the IKE real time debug does not show any output.

Why?
A . The debug output shows phases 1 and 2 negotiations only. Once the tunnel is up, it does not show any more output.
B . The log-filter setting was set incorrectly. The VPN’s traffic does not match this filter.
C . The debug shows only error messages. If there is no output, then the tunnel is operating normally.
D . The debug output shows phase 1 negotiation only. After that, the administrator must enable the following real time debug: diagnose debug application ipsec -1.

Answer: B