[mrtg] Re: Calling MIBs

[Peter Glanville]

That's the stuff.

"Instance": In a switch or Router, measuring Bytes In, you need to know
which port's bytes in you are talking about. Hence you use ifInoctets.2 for
port 2 and so on.

Your MIB is incomplete. There should be translations all the way down to
the end. A table has multiple instances.
You might have two sensors, CPU and room perhaps.
The chances are that you do not have two temperature sensors, so I would
suggest you may be measuring Current and Max or Average, or something
Look at the numbers and see what you think they mean (or plot them and see
how they go)

If MRTG has the MIB included, you could use Target[temp1]:
tempHumidSensorTempValue.1.1&tempHumidSensorTempValue.1.2:public at 10.6.16.xyz
, or more reliably go for the more  explicit
Target[temp1]:.1.3.6.1.4.1.1718.3.2.5.1.6.1.1&.1.3.6.1.4.1.1718.3.2.5.1.6.1.2:public at 10.6.16.xyz

Also: Gauge option, and Maxbytes values, mentioned in someone else's reply

You can do OID maths for Farenheit/Centigrade convertion.

GetIf only likes you starting from OIDs that it can translate, hence your
problem there.

17:30 in this country, I'm off home now. Continue tomorrow if needed.

Regards
Peter



|---------+---------------------------->
|         |           "Barakat,        |
|         |           Mehmet-Hasan"    |
|         |           <hbarakat at kpmg.co|
|         |           m>               |
|         |                            |
|         |           12/11/2003 17:17 |
|         |                            |
|---------+---------------------------->
  >------------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                              |
  |       To:       "'Peter Glanville'" <peter_glanville at cuk.canon.co.uk>, mrtg at list.ee.ethz.ch                                  |
  |       cc:                                                                                                                    |
  |       Subject:  RE: [mrtg] Re: Calling MIBs                                                                                  |
  >------------------------------------------------------------------------------------------------------------------------------|




Peter,

Thanks for the info. I have Getif on a Windoze box, and I can browse the
MIB
fine. I get .1.3.6.1.4.1.1718.3.2.5.1.6 correlating to
.iso.org.dod.internet.private.enterprises.serverTech.sentry3.systemTables.te

mpHumidSensorTable.tempHumidSensorEntry.tempHumidSensorTempValue but down
in
the frame, there are two values that pop up when I hit Start :

.iso.org.dod.internet.private.enterprises.serverTech.sentry3.systemTables.te

mpHumidSensorTable.tempHumidSensorEntry.tempHumidSensorTempValue.1.1 *and*
.iso.org.dod.internet.private.enterprises.serverTech.sentry3.systemTables.te

mpHumidSensorTable.tempHumidSensorEntry.tempHumidSensorTempValue.1.2.

Is this what you mean when you say "instance"? I need the info from the
second one, which is the temperature.

If I append the original entry up top to add in the suffix .1.1 or .1.2,
Getif fails to retrieve the value - it only likes it when I leave it as
.1.3.6.1.4.1.1718.3.2.5.1.6.

Any clues? I'd like to browse the MIB from my RedHat MRTG station - any
recommendations on what to use?

-H

-----Original Message-----
From: Peter Glanville [mailto:peter_glanville at cuk.canon.co.uk]
Sent: Wednesday, November 12, 2003 11:29 AM
To: Barakat, Mehmet-Hasan; mrtg at list.ee.ethz.ch
Subject: Re: [mrtg] Re: Calling MIBs



> Target[temp1]:
.1.3.6.1.4.1.1718.3.2.5.1.6&.1.3.6.1.4.1.1718.3.2.5.1.6:public at 10.6.16.xyz
>
>There isn't much there. What's wrong?

The above OID is listed in the MIBs, but does the box support it?
Walk the MIB (eg using GetIf) and see what is there. That will also show
the correct instance number if needed.

PS. You do not NEED a MIB in MRTG.
A MIB merely translates Name to OID number
eg ifInOctets = .1.3.6.1.2.1.2.2.1.10
So if you wish to specify the Name on the Target line, MRTG needs to have
the MIB to translate.
If you are going to specify the full OID, Mrtg does not need the MIB.

Peter






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