which network interface check plugin to use?

[Thomas Guyot-Sionnest]

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On 12/09/08 04:47 PM, Michael W. Lucas wrote:
> Hi,
> 
> Today, I use MRTG to track switch and router traffic, interface
> errors, and so on.  We use Nagios separately to generate alarms.  I
> think we could replace our MRTG install with Nagios and PNP.  I'm
> certain someone here has done this.
> 
> I went looking for interface-stat-checking plugins, and found many.
> Quite a few, actually.  Dozens.  In different versions.  Many with
> similar names, some updated and re-relased by people other than the
> author with slightly different functionality than all the other
> updated versions of the same plugin released by other people.  Rather
> than spend days trying to test all of these, I thought I'd just beg
> for guidance here.  I'm looking for something that:

FYI, one thing I wanted to add to check_snmp is to monitor couter-based
data by adding a timestamp and last value to performance data string,
and passing it back to the plugin on the command name (I have a plugin I
haven't released yet that does that out of CSV-formatted windows
performance data - it parses the last timestamp and value, then
calculate the average). Unfortunately I think it's a bit too sort till
the next release to get it out in 1.4.13, even if I manage to find the
time to get it done quickly...

Using this feature:

> a) can be configured to monitor based on port
> name, hopefully using a regex.  (I have many switches to monitor, and
> while some of them have FastEther port 0/1 and another has GigE 0/1, I
> can get away with calling it port 0/1.)

It wouldn't help on that, that's out of scope of check_snmp...

> b) tracks both traffic and interface errors

Using separate service, yes (it would work under the same service too,
but I don't think it would be very clear). Perhaps with the planned new
thresholds formats (big project - haven't started coding yet) something
could be done about that.

> c) looks decent in PNP

I don't know - it should if you can configure PNP to get the performance
counters you want and associate decent name to them.

> d) snmp v3

IIRC check_snmp supports v3

- --
Thomas
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