[mrtg] FW: How does one debug SNMP errors?

[M.Hoogstad]

I think this is some sort of protocoll error as you get a "out of sequence"
error for the PDU "protocoll data unit". you should check the snmp version
on the target is the same version (v2.0) as you run on the MRTG server ( You
might want to (re)install some newer snmp RPM's on your Linux-mrtg-server).
Also... you said that you get this mess twice a day; does that mean polling
for the rest of the day goes fine?


Good Luck

Lupinum

-----Oorspronkelijk bericht-----
Van: mrtg-bounce at list.ee.ethz.ch
[mailto:mrtg-bounce at list.ee.ethz.ch]Namens David L Kindred (Dave)
Verzonden: vrijdag 7 september 2001 22:50
Aan: mrtg at list.ee.ethz.ch
Onderwerp: [mrtg] How does one debug SNMP errors?



On average of about twice a day, I get  errors like this:

    SNMP Error:
    Error decoding response PDU:
      Expected sequence tag 48, got 43
        %{%i%s%*{%i%i%i%{%@
          ^
    SNMPv1_Session (remote host: "hostname" [www.xxx.yyy.zzz].161
                      community: "********"
                     request ID: 1251986574
                    PDU bufsize: 8000 bytes
                        timeout: 2s
                        retries: 5
                        backoff: 1)

Where do I start debugging these?

    Is this a problem with the device being polled?

    With the network?

    With the computer doing the polling?

    With mrtg?

    With something mrtg is invoking?

    Should I just ignore these errors?

MRTG Rev 2.8.12 on a RedHat Linux 7.0 system if that matters at all.

--
David L. Kindred                       <mailto:d.kindred at telesciences.com>
Unix Systems & Network Administrator   Telesciences, Inc.
Phone: +1 856 642 4184                 2000 Midlantic Drive, Suite 410
Fax: +1 856 866 0185                   Mount Laurel, NJ 08054 USA

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