[rrd-users] counter problem

[Sterpu Victor]

I'm doing some tests with this rrd database:
/usr/local/bin/rrdtool create /var/www/rrd/test.rrd --step 60 --start 
1862431200 DS:test:DERIVE:600:0:13107200 RRA:AVERAGE:0.5:1:505440

This database will store taffic in bytes.
Problem is that from time to time the counter *will go up a lot*.
I can't solve the problem by setting a smaller max value for the data 
source.

I found one solution, but I must ask if there is *a more simple one*.
Solution for reseting the counter: wait for <heartbeat seconds>.
After I wait that number of seconds without inserting nothing in the 
database, the counter will reset.

So, is there another solution?
Thank you.