[mrtg] Re: sudden drop in graphs

Steve Shipway s.shipway at auckland.ac.nz
Thu Jan 12 23:02:11 MET 2006

> Has anybody ever experienced a sudden drop in MRTG graphs?  I 
> have a graph that measures traffic on a trunk between 2 
> switches and its recently been dropping to 0 or close to 0 
> several times during the day.  

Sounds as if you are using 16-bit counters when you should be using 32-bit,
and your traffic has hit the magic 100M/5min limit?

Switch to using the 32-bit counters (Use SNMPv2) or drop your polling to
1min intervals.  Instructions for this are in the MRTG documentation.


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