On 27.10.2012 21:16, Magnus Fromreide wrote:
> On Sat, 2012-10-27 at 20:45 +0200, Garry wrote:
>> On 27.10.2012 20:05, Magnus Fromreide wrote:
>> I know the shell level requests (snmpbulkwalk), trying to get this done
>> in C ...
> Good.
>
>>> Is any of them a table?
>> e.g. I'd want to get several values at the same time that are associated
>> to an interface, e.g. bytes sent, received, errors
> Ok, then we are onto something.
>
>>> If none of them is a table then I think a Get or GetNext suits your use
>>> case better, but remember that you can put many request OID's in them as
>>> well.
>>>
>> Are there any examples of this around?
> I am not certain about what you are asking for here but...
>
> You start by figuring out what request you wish to send, for now I am
> assuming that you wish to do
>
> snmpbulkget -Cn1 -Cr20 localhost sysUpTime ifOutOctets ifInErrors
>
> then the way to do that from C is
>
> pdu = snmp_pdu_create(SNMP_MSG_GETBULK);
> pdu->non_repeaters = 1;
> pdu->max_repetitions = 20;
> {
> oid o[] = { 1, 3, 6, 1, 2, 1, 1, 3 };
> snmp_add_null_var(pdu, o, OID_LENGTH(o));
> }
> {
> oid o[] = { 1, 3, 6, 1, 2, 1, 1, 2, 1, 16 };
> snmp_add_null_var(pdu, o, OID_LENGTH(o));
> }
> {
> oid o[] = { 1, 3, 6, 1, 2, 1, 1, 2, 1, 14 };
> snmp_add_null_var(pdu, o, OID_LENGTH(o));
> }
>
> and then you send the pdu.
Looking good, except that SNMP_MSG_GET is actually more of what I need
here, with the multiple exact OIDs added to the PDU, resulting in the
values I need ... the modified snmpdemoapp I used as a basis is
performing fine with multiple value request ...
Thanks for the help!
-garry
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