[rrd-users] Re: Problems with Counters after reboot of device

[Tobias Oetiker]

Today you sent me mail regarding [rrd-users] Problems with Counters after...:

*> Hi,
*> 
*> in a lot of my monthly reports i use Counters. The devices i query via SNMP
*> have to reboot sometimes. After the reboot the counter values restart at
*> zero. 
*> Through this the later counter values are less then the earlier values.
*> Rrdttool is convinced that there was a counter wrap. So i get extremly high
*> values for the the days with the reboots and the values of the other days
*> are vanishing in the graphs. 
*> Who has an idea what can i do?

the the MIN and MAX properties on all Data sources ... or use
DERIVE instead of counter and set the MIN property of the DS to 0
this will ignore all cases where the counter is smaller as the
previous reading

tobi
*> 
*> Thanks in advance
*> 
*> Uli Tehrani
*> 
*> 
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