note
thargas
<p>
You might also want to consider the (not uncommon) case where enough of the networking stack is still working that the host will respond to ICMP, but it's still non-functional. Monitoring the "upness" of a host is non-trivial. I ended up doing asynchronous SNMP queries for uptime as this also told me if the host had rebooted since last time I asked.
</p>
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