11.3 Nagios's Own SNMP Plugins
Among the standard Nagios plugins there are three programs with which data can be obtained via SNMP: a generic plugin that queries any OIDs you want, and two Perl scripts that are specialized in interface data of network cards and the ports of switches, routers and so forth. In addition to this, the directory contrib contains the source code of other SNMP plugins that are not automatically installed. Apparently these are no longer maintained and cannot run without major adjustments to the code.
http://www.nagiosexchange.org/ also provides some useful specialized plugins, some of which are introduced in 11.4 Other SNMP-based Plugins from page 255. The following descriptions are limited, for reasons of space, to SNMPv1/2 ...
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