rrdtool values keeps empty

[ericbosba]

Hi,
I'm trying to graph Carrier Sense Errors on my Hp Procurve switches using a SNMP query. I'm using Cacti 0.8.8a.
My graphs keeps empty. Current, min and max values are 0.00.

"rrdtool info" give this :

ds[CarrierSenseErrors].index = 0
ds[CarrierSenseErrors].type = "COUNTER"
ds[CarrierSenseErrors].minimal_heartbeat = 600
ds[CarrierSenseErrors].min = 0,0000000000e+00
ds[CarrierSenseErrors].max = 1,0000000000e+02
ds[CarrierSenseErrors].last_ds = "53"
ds[CarrierSenseErrors].value = 0,0000000000e+00
ds[CarrierSenseErrors].unknown_sec = 0
...

The .value is 0,0000000000e+00 and the .last_ds value is "53" (53 is the good value, verified by snmpwalk).
Which value is used to buid graphs ?

This is my rrdtool fetch AVERAGE :
1363614300: 0,0000000000e+00
1363614600: 0,0000000000e+00
1363614900: 0,0000000000e+00
1363615200: 0,0000000000e+00
1363615500: 0,0000000000e+00
1363615800: 0,0000000000e+00
1363616100: 0,0000000000e+00
1363616400: 0,0000000000e+00
1363616700: 0,0000000000e+00
1363617000: 0,0000000000e+00

Can you tell me why values are null please ?

[gandalf]

As this is a COUNTER value, does it ever change? If not, data is indeed 0 (a COUNTER will show you the difference between two consequtive polling intervals)
R.