[rrd-users] rrdtool - graph scale in the millions ?

[dmahler at telcordia.com]

I have been running rrdtool for quite a while now and seem to have an issue
occasionally with a graph scale (or perhaps invalid data samples).

For example,  I am using mrtg to gather simple traffic counters for some
vpn tunnels every 8 minutes.     normally the data then traffic graphs in
the range of 0-50k or so.  but .........a certain tunnel graphs in the
range of 70M (which is quite impossible)

is it possible that there is something in my rrd graph statement (below)
that is causing/allowing this?   or I need to be ignoring out of bounds
values?   or I am not allowing for a counter rollover properly?

any ideas appreciated?


Don M
SAIC/Telcordia



graph TRAFFIC.67.png --start 1052879788 --end 1052966188 --height 200
--title="xxx.yyy.SAIC.COM_T7_TRAFFIC " VRULE:1052966188#00FFFF
DEF:vds0a1=xxx.yyy.SAIC.COM_T7_TRAFFIC.rrd:ds0:AVERAGE
CDEF:v1=vds0a1,8,* LINE2:v1#ff9900:"xxx.yyy.SAIC.COM.IN..............."
DEF:vds1a2=xxx.yyy.SAIC.COM_T7_TRAFFIC.rrd:ds1:AVERAGE
CDEF:v2=vds1a2,8,* LINE2:v2#6600ff:"xxx.yyy.SAIC.COM.OUT.............."
 -c BACK#FFFFCC COMMENT:"***Starting 05/13/03 22:36:28 covering 24.0 Hours
......... " --lower-limit 0

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