SNMP wrong results.

[Moreno2]

Hello,

I have different problems with SNMP query to HP E778 and HP E876.

The problems are related to "Image transfer belt information" , "T2 roller life" , "Image transfer belt cleaner information";  I have as result "-3".

Another thing is that some HP E778 work fine, and others HP E778 have problems.

We tried to switch language between Italian and English, but with no positive results.

Does "-3" mean anything? Is it like a positive value or not?

Any other ideas?

Thanks a lot!

[jungle-printer]

Hi,

I couldn't find your printer or the value that you want to check, but I know what "-3" means ^_^

quote from http://www.rfc-base.org/txt/rfc-3805.txt:

<quote>
2.4.  Enumerations
   [...]
   
   The Printer MIB has also defined the following special values for use
   with objects of the syntax "Integer32" to define conditions that are
   outside of the normal numeric range:  other(-1), unknown(-2), and
   partial(-3).  The 'partial' value means that there is some supply
   remaining (but the amount is indeterminate) or there is some capacity
   remaining (but the amount is indeterminate).  The Integer32 range
   field indicates in which objects these special values are valid.
</quote>

which means, "-3" should mean that some amount of whatever is left, but it is not clear how much.

[Moreno2]

Hi,

first of all thanks for your replay.

So every negative number means "some amount of whatever is left, but it is not clear how much"?

Because I have other cases in which the return number is "-2" or even "-1".

Thanks again.

[jungle-printer · Accepted solution]

sorry, I don't have the time to go into detail.

I am no snmp expert.

I would look at the mib file for values to check, use snmpget or a monitoring tool and try different situations for the check results.

---

@Moreno2<quote>
So every negative number means "some amount of whatever is left, but it is not clear how much"?

Because I have other cases in which the return number is "-2" or even "-1".

</quote>

---

This is wrong, at least to my understanding. -3=something left; -2=unknown; -1=other.  For example hrPrinterStatus returns "3", which means idle. Without information about the tools you are using, the mib file and the oids in question all this is nothing more than wild guessing.

[Moreno2]

Ok thanks a lot for yout help.

I'll go through the MIB file as you suggested.

Thanks again.

[jungle-printer]

Hi,

maybe an example helps a little. I try to be more precise:

Laserprinter connected @192.168.22.11, Printer-MIB, oid .1.3.6.1.2.1.43.11.1.1.6 and 1.3.6.1.2.1.43.11.1.1.9; at 6 a description of several supplies is returned, at 9 the level of said supplies. For "Waste Toner Box" the check result is "-3" and under "Details" you can read the corresponding text.

1  -MBROWSE- snmpwalk .1.3.6.1.2.1.43.11.1.1.6 -mib Printer-MIB  >>

DESCRIPTION

2  -MBROWSE- snmpwalk .1.3.6.1.2.1.43.11.1.1.9 -mib Printer-MIB >>

SUPPLIES LEVEL

3  -MBROWSE- snmpwalk .1.3.6.1.2.1.43.11.1.1.9 -mib Printer-MIB >>

SUPPLIES LEVEL - DETAILS

mbrowse is a graphical interface for snmpget/snmpwalk; available for linux. for windows I'm sure there are other "MIB-Browsers" or snmp-programs.