Please always reply to the list, thanks.
> From: Ragnar Moller [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, December 02, 2008 9:46 AM
> Thanks for your response to my, perhaps vague response.
>
> I have yet to understand much about SNMP and MIB's it seems.
>
> You are saying "One of the tools may be using the "-Ou" flag."
>
> Are you saying I have to search for a startup script where
> something snmp related is called with the flag -Ou ?
> In /etc/ or elsewhere.
> Would you have an idea of the how such a command would look ?
>
> That's what I understood from your comment.
What I am saying is that there are many different ways to print out
OIDs. Here are a few samples:
i. (numeric absolute) .1.3.6.1.2.1.1.1
ii. (numeric absolute implied) 1.3.6.1.2.1.1.1
iii. (symbolic absolute)
.iso.org.dod.internet.mgmt.mib-2.system.sysDescr
iv. (symbolic absolute implied)
iso.org.dod.internet.mgmt.mib-2.system.sysDescr
v. (simple symbolic) sysDescr
vi. (MIB::symbol) SNMPv2-MIB::sysDescr
vii. (symbolic relative) system.sysDescr
There are other ways as well. The net-snmp command line tools which
print output can be forced to use some of these modes: "-On" for (i), "-Of" for
(iii), "-Os" for (v), "-OS" for (vi), and "-Ou" for (vii). See the "OUTPUT
OPTIONS" section of the snmpcmd man page for details. Of note is (vii), which
can vary greatly, as the choice of where to specify relative to is highly
subjective and varies (not for the "-Ou" flag, which should be consistent for
given OIDs, while not necessarily across OIDs) from tool to tool.
So if one of your tools prints out sysDescr as "system.sysDescr" and
another expects to read it as "internet.mgmt.mib-2.system.sysDescr", nothing
has disappeared - the tools just aren't using the same notation. The easy way
to avoid this problem is to force all your tools (except probably the final
display tools) to use absolute numeric mode for OIDs. One way to force this is
to not tell them where the MIBs are.
Specific corrective strategies are left as an exercise for the student.
HTH,
Mike
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