With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoEnvMonEnableFanNotification
cisco Environmental Monitor Enable Fan Notification
1.3.6.1.4.1.9.9.13.2.4
This variable indicates whether the system produces the ciscoEnvMonFanNotification. A false value prevents fan notifications from being sent by this entity. This object is deprecated in favour of ciscoEnvMonEnableStatChangeNotif.
Back to CISCO-ENVMON-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoEnvMonEnableFanNotification on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
