Nagios Support Forum

Posted: **Fri Sep 30, 2011 3:31 pm**

I have a basic nagios setup from following the quickstart guide. I have it successfully querying information via snmp from some dell and cisco switches. The problem i am having is that i have it monitoring different ports to test for up and down states. On the Dell an up port returns a 1 while a down port returns a 2. Nagios classifies both as ok status.

I would like to know how to set proper thresholds for these devices. Also what i learn here will most likely give me more information as to how snmp works.

Technical information
OS: CentOS 5.6

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Linux xxx.net 2.6.18-238.el5 #1 SMP Thu Jan 13 16:24:47 EST 2011 i686 i686 i386 GNU/Linux

Nagios Version: 3.3.1
Nagios Plugins: 1.4.15
Net-Snmp Details

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net-snmp.i386                            1:5.3.2.2-14.el5_7.1          installed
net-snmp-libs.i386                       1:5.3.2.2-14.el5_7.1          installed
net-snmp-utils.i386                      1:5.3.2.2-14.el5_7.1          installed

Here is the service definition which is based on the quick config

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define service{
        use                     generic-service ; Inherit values from a template
        host_name               some_host
        service_description     Port 5 Link Status
        check_command           check_snmp!-C xxxxxx -o ifOperStatus.5 -r 1 -m RFC1213-MIB
        }

If i run the check from command line here is some sample output

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# ./check_snmp -H xx.xx.xx.xx -C xxxx -o ifOperStatus.5 -r 1 -m RFC1213-MIB
SNMP OK - 2 | RFC1213-MIB::ifOperStatus.5=2

I figured out that 2 means the port is down.
Again, It is working... i just need to know how to set proper thresholds for this.

Thanks

Posted: **Mon Oct 03, 2011 10:59 am**

Found a solution in this forum. I now have this working properly.

See code post form ADFHAU here: http://forums.meulie.net/viewtopic.php?f=59&t=4532

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