Monitoring temperatures on Cisco equipment

[Ortner, Gerald]

Hi,

We use check_cisco_envmon<https://www.monitoringexchange.org/inventory/Check-Plugins/Network/Cisco/check_cisco_envmon> to monitor our Cisco equipment. It's using the  ciscoEnvMonxxxxState value only.
I don't know if the thresholds are available through snmp,  but you can view them by entering  "show environment alarm thresholds" on the device.

gerald



Von: Jeffrey Watts [mailto:jeffrey.w.watts at gmail.com]
Gesendet: Mittwoch, 26. Jänner 2011 21:47
An: Nagios Users List
Betreff: [Nagios-users] Monitoring temperatures on Cisco equipment

I'm looking to monitor temperature on some various Cisco equipment (2821, 3750, 4948, 6509, etc).  I've looked at the check_catalyst_temp.pl<http://check_catalyst_temp.pl> and check_env_stats.py plugins, which both look in .1.3.6.1.4.1.9.9.13.1.  I see and understand the basic mechanisms of these checks.

What I don't understand is why both require warning and critical thresholds.  From what I can tell, both walk ciscoEnvMonTemperatureStatusDescr, check ciscoEnvMonTemperatureState (and alert accordingly) AND also check ciscoEnvMonTemperatureStatusValue to see if it's out of the warning and critical thresholds specified on the command line.  I understand why one would want to be able to set custom thresholds (that would override "normal" and "warning" states).  What I don't understand is why are they required?  Is there a reason, or is it just an oversight?  I don't have much experience monitoring network equipment, so I'm wondering if there's a reason for it.

On that same note, does anyone know where those thresholds are stored?  I see in the same OID that there is ciscoEnvMonTemperatureThreshold, but that's an absolute upper bound before a forced shutdown occurs.  I'm assuming that the thresholds for "warning" and "critical" ciscoEnvMonTemperatureState must be stored somewhere else.  Does anyone know where that is?

Unless there's a good reason for requiring -w and -c, I'll probably change one of the plugins to not require them.

Thanks in advance,
Jeffrey.

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