Re: snmp unknown object identifier

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
Adrian
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