[mrtg] How does one debug SNMP errors?

David L Kindred (Dave) d.kindred at telesciences.com
Fri Sep 7 22:49:58 MEST 2001

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

    SNMP Error:
    Error decoding response PDU:
      Expected sequence tag 48, got 43
    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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