ASUS Merlin Watchdog

A simple watchdog service for ASUS Merlin firmware.

The script checks pings against the default gateway received from your ISP.

If a ping times out, it attempts to ping the default gateway 5 more times. If no response is received from the default gateway after 5 times, it kills the dhcpc service and forces a reconnect of the WAN interface.

Installation

1. Login to the router configuration page
2. In the Administration --> System menu, enable SSH and the Enable JFFS custom scripts and configs options.

3. Upload the services-start and merlinwatchdog.sh to /jffs/scripts
4. In the SSH terminal, run: chmod a+x /jffs/scripts/merlinwatchdog.sh /jffs/scripts/services-start; /jffs/scripts/services-start
5. You're done!

Thanks

This script is based on https://github.com/elislusarczyk/merlin-wan-watchdog with adaptations.