Hello everyone from Net-SNMP.
First of all, amazing project! Thanks for this awesome tool.
I'm working on a project in which I have to develop a custom SNMP Agent, which
will monitor some physical variables in my equipment.
It will be implemented in an Embedded Linux OS. I'm using the SAMA5D2 Xplained
kit<http://www.atmel.com/tools/atsama5d2-xult.aspx> for prototyping, and
Yocto<https://www.yoctoproject.org/> for crafting the distro.
I've already been able to build a distro with Net-SNMP
v5.7.3<https://layers.openembedded.org/layerindex/recipe/4653/> snmpd embedded
into it.
Perhaps too much info about Yocto could be misleading about my real questions,
so I'll not get too deep into it. All we need to know is I'm using Net-SNMP
v5.7.3, and I can modify its source code at will to generate the appropriate
packages.
Now I have to extend this Agent to create proper integration with hardware, so
it can talk to sensors, relays, etc.
I've been extensively reading Net-SNMP's wiki for the past couple of days.
Especially the Agent
Architecture<http://www.net-snmp.org/wiki/index.php/Agent_Architecture> and
Agent Helpers<http://www.net-snmp.org/wiki/index.php/Agent_Helpers>. Here are
some questions I couldn't figure out by myself:
* I'm trying to follow TUT:Writing a MIB
Module<http://www.net-snmp.org/wiki/index.php/TUT:Writing_a_MIB_Module> with
the scalar_int example. I can't figure out where to place scalar_int.c. Also,
doesn't it have any header file? Do I need to change anything in the config
files before building it?
* I feel MIB for
Dummies<http://www.net-snmp.org/wiki/index.php/MIB_for_Dummies> starts with the
assumption I already have some pre-configured MIB. Is that true or am I missing
something? If so, how do I generate one so it contains OIDs for all my sensors
and actuators?
* Which strategy would you guys suggest I invest more of my time? Writing a
MIB Module from scratch, or using mib2c? I feel writing it from scratch could
be more appropriate since I'll need low-level hardware integration. But I
really need some expert's opinion on this. Also, in which case using AgentX
would be more appropriate? Could that be the case of my project?
* Finally, is there any book you guys would suggest? I've been reading
O'Reilly's Essential SNMP<http://shop.oreilly.com/product/9780596008406.do>,
but I feel it's more targeted at Network Admins, not so much at Developers per
se.
Any help is much appreciated.
Regards,
Bernardo.
[1485168441010_logotipo.png]
bernardo rodrigues
Desenvolvedor de Hardware - Hardware Developer
Tel: +55 (62) 39468060
Cel: +55 (62) 991829140
e-mail: bernardo.rodrig...@datatraffic.com.br
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