Web Power Switch 7
digital-loggers.com
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rebooted. Five parameters control Auto-ping operation:
Time between pings
This is the time between each “ping” check of the IP address. 60
seconds should be useful for most applications.
Ping failures before reboot
This sets the number of failed communications attempts that must
be sequentially detected before a power cycle. For example,
when set to 5, the target system must fail to respond 5 times in a
row before it is rebooted. Since occasional network timeouts and
packet loss can occur during normal Ethernet operation, between
5 and 10 pings is suggested.
Times to Attempt Reboot
If you have an unreliable target device, limit the number of times it
will be rebooted by entering that value here. For example, entering
5 will reboot your server up to 5 times before giving up.
Device Reboot Delay
After power cycling to reboot a device, a waiting period will occur
before the IP address is re-checked by Auto-ping. This delay
allows the device time to reboot. Most devices take some time
to reboot. Windows and Linux servers can force automatic fi le
system checks which may take several minutes to complete. To
allow for startup delays, enter a time delay in the Device Reboot
Delay period. For example, a reasonable value for a typical server
might be 10 minutes (600 seconds). Entering 600 would cause
the power controller to start checking the server for normal IP
operation 10 minutes after reboot.
Find a detailed explanation at: digital-loggers.com/Autoping.html
Auto-Ping Example
In this example, we use Auto-Ping to automatically reboot a DSL
router. Since the switch is connected inside the router, we select a
target IP of 8.8.8.8. This is a multi-cast address which connects to
a multidude of Google name servers. We can safely assume that if
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