Question 710
At the Aspen agricultural office, short management packets pass through the DMVPN, but larger TCP sessions repeatedly stall after encapsulation. Which continuing operational control is most directly relevant to preventing this problem?
Explanation
Correct Answer
This control monitors the relevant configuration or operational behavior at the Aspen agricultural office. Test path MTU and MSS under encrypted tunnel load after any tunnel encapsulation change. It targets the condition described in the stem.
Incorrect Answers
This would manage a different failure pattern. An RD distinguishes overlapping VPNv4 prefixes but does not itself authorize VRF route import. It is not the most direct recurring check for gre over ipsec mtu and mss at the Aspen agricultural office.
That safeguard protects against dmvpn multicast mapping for igp, not the concrete risk described at the Aspen agricultural office. Encapsulation reduces effective payload MTU, causing large packets to fragment or be dropped.
This is useful for another concern: Validate GRE tunnel mode against the intended DMVPN hub-and-spoke or dynamic-mesh topology. It does not continuously test gre over ipsec mtu and mss at the Aspen agricultural office.