Netonix Forums

Chris,
We are experiencing random "Detected cold (watchdog) boot"
on various AC and DC switches, all running 1.5.0. I would prefer to have an option to simply disable the watchdog function at the risk of having to go visit a site if a switch locks up. At least for our troubleshooting that would be very helpful. Currently it's causing us more issues than it appears to be preventing.

Thank you
-Aaron

aaron@futuretk.com wrote:Chris,
We are experiencing random "Detected cold (watchdog) boot"

The line "Detected cold (watchdog) boot" or "Detected warm (watchdog) boot" will always appear at the top of the log.

A cold reboot is supposed to normally indicate that the unit was power cycled and warm is from soft-reboot such as reboot requested in UI/CLI or after a firmware upgrade however sometime an intended warm reboot will convert to a cold reboot and power cycle the POE OFF then back ON when normally POE would be left ON durrng the reboot.

Just because you see this line at the top of the log does not mean that the reboot was triggered by watchdog reboot it is simply reporting that it thinks the reboot was either a cold or warm.

So for sake of argument if you power cycle the unit you will see the watchdog COLD reboot line at the top of the log but this does not mean a watchdog reboot occurred.

If your experiencing reboots chances are it is not from a watchdog reboot it is simply reporting what kind of boot it thinks it was cold or warm.

There are some enhancements to prevent some types of watchdog reboots such as from a LOOP (packet storm) in v1.5.1rc7, you should try v1.5.1rc7 is your think your switches are rebooting possibly from a LOOP.

But to my knowledge the only reason a watch dog reboot would occur is from a loop but as I said v1.5.1rc7 has some improvements on this.