Nagios: Integrating Cisco switches

Well, as I wrote recently, we received a new BladeCenter a few weeks back. Now, as we slowly take it into service I was interested in watching the utilization of the back planes as well as the CPU utilization of the Cisco Catalyst 3012 network switches.

The first mistake I made, was to trust Cisco with their guide about how to get the utilization from the device using SNMP. They stated some OID’s, which I tried with snmpwalk and got a result from.

Now, as I tried retrieving the SNMP data by means of the check_snmp plugin, I got some flaky results:

Those of you, who read the excerpts carefully will notice the difference between snmpwalk and the OID I passed on to check_snmp.

The point being, the OID’s Cisco gave in their Design tech notes are either old, or just not accurate at all. After passing on the .0 to each value given by Cisco, the check_snmp is all honky dory and integrated into Nagios.

As usual, the Nagios definitions are further down, for those interested.

For now, the pnp4nagios graphing for the back plane utilization isn’t working (don’t ask me why). Also, it might be a good idea, to combine the CPU utilization commands into one, so you’d get a single graph out of it.

One thought to “Nagios: Integrating Cisco switches”

  1. Hola! I’ve been reading your web site for a long time
    now and finally got the bravery to go ahead and give you a shout out from Huffman Tx!
    Just wanted to tell you keep up the good job!

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