What is the most effective solution if the clock on a RouterBOARD1000 resets to default after rebooting?

Configuring the system NTP client with a reachable NTP server address is the most effective solution for ensuring that the clock on a RouterBOARD1000 maintains accurate time settings after rebooting. When this setup is in place, the router will synchronize its time with a designated Network Time Protocol (NTP) server whenever it starts up or at defined intervals. This connection allows the router to leverage the accurate time data provided by the NTP server, thus preventing any drift or reset to default time settings.

This solution is ideal because it automates the process of timekeeping, reducing the need for manual intervention and ensuring continuous synchronization. An NTP client configuration provides a reliable way to maintain the correct time without requiring additional scripts or physical checks.

Engaging alternatives, such as scripting to set the clock or verifying hardware components like the CMOS battery, may work in specific scenarios but lack the automated and reliable nature of NTP synchronization. While scripting can be helpful for specific configurations, it introduces complexity and potential errors without the robustness provided by using a dedicated NTP server. Checking the CMOS battery may be relevant if there were hardware issues causing the time reset, but this approach is more cumbersome and might not resolve the underlying issue effectively.