Re: [Hampshire] Deciding SNMP MIB files in Linux

On 14/09/2012 10:57, Stephen Davies wrote:
> Chris,
> I think you have had a better experience with SNMP than I am currently
> having.
> You asked about the 'can of worms' relating to Polling for SNMP Traps.

I don't mean to pick nits, but you don't poll for traps. Traps are sent
by the device without being requested; you poll for data by sending
'get' requests to the device with the OIDs you want it to return. The
communications channel is different for the two mechanisms: get/set
requests are sent to the device usually on port 161, traps are sent from
the device to the configured recipient usually on port 162.

> The IPTV devices we are polling sometimes don't even respond within 30
> seconds. Nasty.

Are you sure the network is reliable, bearing in mind SNMP usually uses
UDP, which is unreliable?

> The 5 servers are supposed to respond with the same data. They don't.
> Why? They are running different firmware and the supplier is very very
> very reluctant to make them identical.
> Another SNMP emitter has been configured incorrectly. To get it fixed, a
> guy will have to come from Bahrain. He will remove the unit and then
> ship it to India where sometime in the next month they might possibly
> correct the problem, ship it back and we can try again.
>
>
> Not a happy bunny especially as it is the weekend here and I'm stuck in
> the basement of the airport wearing ear defenders trying to keep the
> incessant fire alarms from slowly driving me mad.

It certainly doesn't sound pleasant and I sympathise, but to be fair the
issues you raise seem to be with the devices and the suppliers. Nothing
you've said so far is really the fault of SNMP.

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