> > *William:* > *That would work. * > > *The only "edge case" I might see as a problem would be if your ping > target went off line. Then the BBB would reboot itself every ten minutes > even though nothing was wrong with the BBB. I guess you could ping several > different targets in rotation and only reboot if they all disappeared.* > *This gets us back to a real cheap local watchdog.*
You only need to ping one ip address. Your internet gateway IP. e.g. your first hop outside of your local network. > > *As an aside: Does anyone know what test a computer runs to determine if > it is connected to the internet?* > *Most desktop/laptop computers have a different network icon as to whether > the network/WiFi you connected to has internet connectivity. Is the > Windows computer pinging some Microsoft location that is "guaranteed" to be > up?* > > *--- Graham* I'm not 100% sure, but the test Windows does is not always correct. Sometimes the icon shows not connected, when in fact as soon as you try to surf something on the web, it goes to the working icon . . . My guess is that it does some simple DNS tests, and then after a while it gives up checking. On Tue, May 17, 2016 at 2:29 PM, Graham Haddock <[email protected]> wrote: > William: > > That would work. > > The only "edge case" I might see as a problem would be if your ping target > went off line. Then the BBB would reboot itself every ten minutes even > though nothing was wrong with the BBB. I guess you could ping several > different targets in rotation and only reboot if they all disappeared. > This gets us back to a real cheap local watchdog. > > As an aside: Does anyone know what test a computer runs to determine if it > is connected to the internet? > Most desktop/laptop computers have a different network icon as to whether > the network/WiFi you connected to has internet connectivity. Is the > Windows computer pinging some Microsoft location that is "guaranteed" to be > up? > > --- Graham > > == > > > On Tue, May 17, 2016 at 2:30 PM, William Hermans <[email protected]> > wrote: > >> >> @Graham, >> >> What I propose is that you do not need an Ethernet Micro connected to the >> BBB. Instead, you have the BBB ping the outside world once every set time >> frame, and it a ping comes back unreachable after say 5-10 minutes. You >> just stop "kicking the dog". Which does present a potential problem that >> Your internet connection may just be down. But a remote system that reboots >> once every 5-10 minutes because the internet connection is down is not >> something I'd personally see as a bad thing. After all you're unable to >> connect to the system anyway. >> > > == > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CANN_KV6MEtkBkkjA-xc3KKzeNRh6LDpoB1xrBnN%2BZo6gJgLX6w%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CANN_KV6MEtkBkkjA-xc3KKzeNRh6LDpoB1xrBnN%2BZo6gJgLX6w%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORrk-KSfKb%3D%2By9tCHPNQSkvfC-K7YPr8cQsvmuwDXR6DCg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
