Re: snmp unknown object identifier

From	Jim Jackson <jj@franjam.org.uk>
Newsgroups	comp.misc
Subject	Re: snmp unknown object identifier
Date	2025-02-20 12:37 +0000
Organization	A noiseless patient Spider
Message-ID	<slrnvre8fn.6l0.jj@iridium.wf32df> (permalink)
References	<gTZyspIo72snFwDr@ku.gro.lloiff> <slrnvr70hg.3ku.jj@iridium.wf32df> <+JyVafOFI9snFwQp@ku.gro.lloiff>

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Sorry for late response ....

On 2025-02-18, Adrian <bulleid@ku.gro.lioff> wrote:
> In message <slrnvr70hg.3ku.jj@iridium.wf32df>, Jim Jackson 
><jj@franjam.org.uk> writes
>>On 2025-02-17, Adrian <bulleid@ku.gro.lioff> wrote:
>>> I'm trying to access a TP link access point to get some basic data from
>>> it.
>>>
>>> According to TP Link, I need the rfc1213 mib, which I've downloaded and
>>> put in my ~/.snmp/mibs directory
>>>
>>> However :
>>>
>>> $ snmpget -v 1 -Cf -c public $IPADDRESS rfc1213.mib::ifInOctets
>>> rfc1213.mib::ifInOctets: Unknown Object Identifier
>>>
>>> greping on the file shows that I do have entries for ifInOctets.
>>>
>>> Changing ifInOctets to something else (e.g. Time ticks) gives me the
>>> same result, but using the long number (1.3.6.1.2.1.1.3.0) works.  As
>>> I'm not sure what ifInOctets translates to, I can't readily use the
>>> number instead.
>>>
>>> Having spent half the afternoon rummaging around on the 'net with no
>>> clear (to me) answer, I'm here.
>>>
>>> Suggestions on where to continue welcomed.
>>>
>>
>>Yes SNMP can be a pain. The info in that mib often is a table of values,
>>one per interface, and you need to know the interface table index to get
>>one value.
>>
>>However you can get all the table in one go by doing an snmpwalk. It a
>>long time since I did snmp monitoring - I have written C-code to gather
>>and display interface data stats, but the numbers are not at my finger
>>tips any more. However I googled and got the number string
>>
>>  1.3.6.1.2.1.2.2.1.10
>>
>>so try
>>
>> snmpwalk -v1 -c public $IPadd 1.3.6.1.2.1.2.2.1.10
>>
>>Here's what my VDSL router gave back ...
>>
>>IF-MIB::ifInOctets.49 = Counter32: 0
>>IF-MIB::ifInOctets.50 = Counter32: 1622068159
>>IF-MIB::ifInOctets.51 = Counter32: 0
>>IF-MIB::ifInOctets.52 = Counter32: 1989775457
>>IF-MIB::ifInOctets.53 = Counter32: 3244444578
>>IF-MIB::ifInOctets.54 = Counter32: 3582643404
>>IF-MIB::ifInOctets.55 = Counter32: 46130557
>>IF-MIB::ifInOctets.56 = Counter32: 3610089600
>>IF-MIB::ifInOctets.1000 = Counter32: 0
>>IF-MIB::ifInOctets.1001 = Counter32: 0
>>IF-MIB::ifInOctets.1002 = Counter32: 0
>>IF-MIB::ifInOctets.1003 = Counter32: 0
>>
>>and if you want the mib numbers ...
>>
>>  snmpwalk -On -v1 -c public $IPadd 1.3.6.1.2.1.2.2.1.10
>>.1.3.6.1.2.1.2.2.1.10.49 = Counter32: 0
>>.1.3.6.1.2.1.2.2.1.10.50 = Counter32: 1622073446
>>.1.3.6.1.2.1.2.2.1.10.51 = Counter32: 0
>>.1.3.6.1.2.1.2.2.1.10.52 = Counter32: 1989775457
>>.1.3.6.1.2.1.2.2.1.10.53 = Counter32: 3244454443
>>.1.3.6.1.2.1.2.2.1.10.54 = Counter32: 3582665247
>>.1.3.6.1.2.1.2.2.1.10.55 = Counter32: 46131353
>>.1.3.6.1.2.1.2.2.1.10.56 = Counter32: 3610126193
>>.1.3.6.1.2.1.2.2.1.10.1000 = Counter32: 0
>>.1.3.6.1.2.1.2.2.1.10.1001 = Counter32: 0
>>.1.3.6.1.2.1.2.2.1.10.1002 = Counter32: 0
>>.1.3.6.1.2.1.2.2.1.10.1003 = Counter32: 0
>>
>>
>>And to dump all the interface numbers is all the gory details try ...
>>
>> snmpwalk  -v1 -c public O 1.3.6.1.2.1.2.2.1
>>
>> or add -On for the number numbers.
>>
>>Happy playing it can be quite fun and often very frustrating!
>>
>>Jim
>>
>
> Thanks for the reply.
>
> Trying that I get :
>
> snmpwalk -v1 -c public $IPadd 1.3.6.1.2.1.2.2.1.10
> iso.3.6.1.2.1.2.2.1.10.1 = Counter32: 480
> iso.3.6.1.2.1.2.2.1.10.2 = Counter32: 0
> iso.3.6.1.2.1.2.2.1.10.3 = Counter32: 0
> iso.3.6.1.2.1.2.2.1.10.4 = Counter32: 0
> iso.3.6.1.2.1.2.2.1.10.5 = Counter32: 0
> iso.3.6.1.2.1.2.2.1.10.6 = Counter32: 47834339
> iso.3.6.1.2.1.2.2.1.10.7 = Counter32: 28162230
> iso.3.6.1.2.1.2.2.1.10.8 = Counter32: 21747742
> iso.3.6.1.2.1.2.2.1.10.9 = Counter32: 0
> iso.3.6.1.2.1.2.2.1.10.10 = Counter32: 0
>
> and
>
> snmpwalk -On -v1 -c public $IPadd 1.3.6.1.2.1.2.2.1.10
> .1.3.6.1.2.1.2.2.1.10.1 = Counter32: 480
> .1.3.6.1.2.1.2.2.1.10.2 = Counter32: 0
> .1.3.6.1.2.1.2.2.1.10.3 = Counter32: 0
> .1.3.6.1.2.1.2.2.1.10.4 = Counter32: 0
> .1.3.6.1.2.1.2.2.1.10.5 = Counter32: 0
> .1.3.6.1.2.1.2.2.1.10.6 = Counter32: 47855251
> .1.3.6.1.2.1.2.2.1.10.7 = Counter32: 28168496
> .1.3.6.1.2.1.2.2.1.10.8 = Counter32: 21766531
> .1.3.6.1.2.1.2.2.1.10.9 = Counter32: 0
> .1.3.6.1.2.1.2.2.1.10.10 = Counter32: 0
>
>

If you smnpwalk these strings can get more information ...

  1.3.6.1.2.1.2.2.1.1  
     ifIndex  tells you the valid indexes - last numbers of the "tables".

  1.3.6.1.2.1.2.2.1.2
     ifDescr  gives descriptions of the interfaces

  1.3.6.1.2.1.2.2.1.3
     ifType   gives the types of interfaces

  1.3.6.1.2.1.2.2.1.5
     ifSpeed  gives the interfaces speed

  1.3.6.1.2.1.2.2.1.8  ifOperStatus  status of interface
  1.3.6.1.2.1.2.2.1.10 ifInOctets
  1.3.6.1.2.1.2.2.1.16 if OutOctets

There are others. Hope you are getting results.

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Thread

snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-17 17:16 +0000
  Re: snmp unknown object identifier Jim Jackson <jj@franjam.org.uk> - 2025-02-17 18:38 +0000
    Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-18 00:19 +0000
      Re: snmp unknown object identifier Jim Jackson <jj@franjam.org.uk> - 2025-02-20 12:37 +0000
        Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-20 12:53 +0000
  Re: snmp unknown object identifier Andy Burns <usenet@andyburns.uk> - 2025-02-17 18:44 +0000
    Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-18 15:02 +0000
  Re: snmp unknown object identifier Grant Taylor <gtaylor@tnetconsulting.net> - 2025-02-17 22:25 -0600
    Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-18 14:26 +0000
      Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-18 15:10 +0000
        Re: snmp unknown object identifier Grant Taylor <gtaylor@tnetconsulting.net> - 2025-02-18 21:16 -0600
          Re: snmp unknown object identifier Adrian <bulleid@ku.gro.lioff> - 2025-02-19 14:21 +0000
          Re: snmp unknown object identifier Jim Jackson <jj@franjam.org.uk> - 2025-02-20 12:48 +0000

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