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something changed in host down detection between the final and beta3?
While beta3 worked ok this final version decides 1/3 of my hosts are down
with SNMP timeout. Tried changing timeout values, snmp version,
oids/request, no change. I'm using SNMP as the down detection method.
In my experience cacti wants to check for OID .1.3.6.1.2.1.1.3.0. If your device does not know about it, cacti thinks that your host is down. See my wining about it at http://forums.cacti.net/viewtopic.php?t=11430
Thanks for the tip, but I don't think that is the cause here.
The OID is available on all my devices. Can see it on the device page in Cacti fine too. I am still to look into this a bit deeper.