Re: [Hampshire] Deciding SNMP MIB files in Linux

On 13/09/2012 13:23, Stephen Davies wrote:
> Ah, someone facing the same issues as I am. SNMP is as far as I'm
> concerned a dogs breakfast. If you have multiple Mibs in a file just
> watchout as the MIB standard allows you to put the trap definitions
> anywhere in the mib (AFAIK). Thus you could have no idea about what
> traps relate to what MIB.

Traps are supposed to be extensible. The OID of the trap essentially
tells you what event has happened, but the supporting data contained in
the varbind can come from anywhere in the MIB tree -- for example you
might want to include system.sysUpTime.0. It wouldn't make sense to
have to implement sysUpTime for each different trap.

> Some devices don't emit traps. You have to Poll them and that opens up
> another huge can of worms.

Such as?

> After a few days of banging my head against the QAIA Airport brick wall,
> I gave up trying to decipher some of the Mibs and traps using Linux and
> have installed a trial version of TrapVision on a Windows machine. Now I
> can see a lot of what is supposed to happen. You can also use it to
> generate traps that can be sent into your Linux system for processing.
>
> I'd rather be interpreting IATA Type-B messages any day.

I think you're being a little harsh, but then perhaps I've just had a
better experience with it! :)

Regards,
Chris
--
Chris Smith <cjs94@???>