check_snmp_int.pl: over 100%?

[Ford, Andy]

> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net 
> [mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf 
> Of Hugo van der Kooij
> Sent: Monday, June 09, 2008 5:39 AM
> Ford, Andy wrote:
> | I'm trying to use check_snmp_int.pl (not standard, see
> | http://nagios.manubulon.com/snmp_int.html) but when I try to get my
> | results in percent form, I get over 100% results on at 
> least on device:
> |
> |
> | $./check_snmp_int.pl -HDEVICE -CXXX --name 'eth-s1p1 ' --perfcheck
> | --perfspeed --warning=40,60  --critical=60,80 --prct
> | eth-s1p1 Ethernet Layer Intel 10/100 Ethernet:UP (CRIT 180.3%/CRIT
> | 468.1%):(1 UP): CRITICAL
> 
> You are instructing it to report how much the speed goes over the
> configured maximum. And you set the maximum to 60 Kb/s in and 
> 80 kb/s out.
> 
> It seems you have in fact 108 kb/s in and 375 kb/s out as the actual
> traffic flow. So the alert is valid.
> 
> If you add the -u parameter your would trigger warning on the 
> percentage
> ~ of the interface. So you need to reach 40% of your maximum 
> speed before
> you reach the warning level.

Actually, the "--prct" is the long options version of "-u" for percent
checks.

> 
> But I must admit the help info on this plugin is not exactly clear. A
> number of options seem to be described in rather puzzling terms which
> are open to speculation of what is meant exactly. This may be due to
> translation errors.

It is complex and the help is ambiguous, no doubt. I'm finding, though,
that the effort of experimenting with the plugin to get what I wanted is
worthwhile. 

The final answer to the "over 100%" problem was that the device being
queried (a Nokia firewall), was putting erroneous values into the
ifSpeed MIB, inserting kbs instead of bps. Vendor has a fix in a newer
OS.

Andrew Ford
Wachovia Corporate Information Security
314-955-6647 desk
314-600-7025 cell
andrew.ford at wachovia.com


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