Which two additional log files are used when troubleshooting issues with route-based IPsec site-to-site VPN connections?

When troubleshooting route-based IPsec site-to-site VPN connections, it is crucial to look at the relevant log files that provide detailed information about the behavior of the VPN and the connections involved. The correct choice includes xfrmi.log and applog.log, which are specifically designed to capture information about the IPsec tunnels and the application processing, respectively.

The xfrmi.log file is vital as it logs events related to the management of the tunnel and the forwarding of packets, which is essential for understanding the routing mechanisms in an IPsec VPN. Meanwhile, applog.log provides insights into application-level processes, which can be useful when assessing how applications interact over the VPN connection.

Both log files deliver significant diagnostic information that focuses on the operational aspects of the IPsec VPN, helping engineers understand issues related to tunnel establishment, traffic flow, and application performance over the VPN.

Other options may suggest several log files, but they don't specifically align with the nuanced requirements for diagnosing route-based IPsec VPN connections, making them less suitable for this type of troubleshooting.