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MIB Tester returns results, PRTG doesn't

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Hi,

I have a Dell Powerconnect 6248 that I am trying to get PRTG to monitor. Currently I am working to get it to read the RMON data for "Drop Events"

I created a custom .oidlib file using the Paessler MIB Importer that included ONLY the sub tree for the RMON "Drop Events". I used the Paessler MIB Tester using the custom .oidlib file I created and it returned the values I was looking for.

However, when I create my sensors in PRTG itself, the sensors do not return any values. They all come up as zero and do not show any errors.

I think perhaps PRTG is reading the wrong values from the .oidlib.

Here is an example of the output from the MIB Tester:

Scanning OIDs
from library: "C:\Program Files (x86)\PRTG Network Monitor\snmplibs\DELL_RMON_DROPEVENTS_LIB.oidlib"
on device: 192.168.5.1
1/11/2012 10:37:59 AM Start Scan
1/11/2012 10:37:59 AM RMON-MIB|ether stats: #[1.3.6.1.2.1.16.1.1.1.1]|ether stats drop events 1.3.6.1.2.1.16.1.1.1.3
1/11/2012 10:37:59 AM .1 1418
1/11/2012 10:37:59 AM .2 0
1/11/2012 10:37:59 AM .3 0
1/11/2012 10:37:59 AM .4 0
1/11/2012 10:37:59 AM .5 0
.
.
.
Found OIDs:
1.3.6.1.2.1.16.1.1.1.3.1: RMON-MIB|ether stats: 1|ether stats drop events,Undefined,,(not defined),1
1.3.6.1.2.1.16.1.1.1.3.2: RMON-MIB|ether stats: 2|ether stats drop events,Undefined,,(not defined),1
1.3.6.1.2.1.16.1.1.1.3.3: RMON-MIB|ether stats: 3|ether stats drop events,Undefined,,(not defined),1
1.3.6.1.2.1.16.1.1.1.3.4: RMON-MIB|ether stats: 4|ether stats drop events,Undefined,,(not defined),1
1.3.6.1.2.1.16.1.1.1.3.5: RMON-MIB|ether stats: 5|ether stats drop events,Undefined,,(not defined),1
1.3.6.1.2.1.16.1.1.1.3.6: RMON-MIB|ether stats: 6|ether stats drop events,Undefined,,(not defined),1
.
.
.
Testing OIDs...
Test 1.3.6.1.2.1.16.1.1.1.3.1: value=1418 #
Test 1.3.6.1.2.1.16.1.1.1.3.2: value=0 #
Test 1.3.6.1.2.1.16.1.1.1.3.3: value= #
Test 1.3.6.1.2.1.16.1.1.1.3.4: value= #
Test 1.3.6.1.2.1.16.1.1.1.3.5: value= #
Test 1.3.6.1.2.1.16.1.1.1.3.6: value= #
Test 1.3.6.1.2.1.16.1.1.1.3.7: value=394101 #

So the MIB Tester does return values for the "Drop Events", but PRTG isn't showing these values when I add the sensors to the switch.

Is there something I am doing wrong?

Thank you

mib mib-importer powerconnect snmp

Created on Jan 11, 2012 3:55:56 PM by  bourne (0) 1



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Accepted Answer

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Hello,

do the values change on the device if you scan against with the SNMP Tester? If they stay the same, then most likely these counters are defined as Delta-Counters and so the difference on each scan is 0 (as the values don't change).

best regards.

Created on Jan 11, 2012 4:38:36 PM by  Torsten Lindner [Paessler Support]



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Hello,

I checked, and sure enough the counter was defined as a delta.

These numbers do change - but hopefully not all that often.

I modified the custom .oidlib file I created and changed type from Delta to a Gauge and readded my sensors. Now they are showing the correct values!

Thank you

Created on Jan 11, 2012 4:51:55 PM by  bourne (0) 1



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