I wonder if anyone can help me - my customer wants to receive traps for fan/psu on some older devices (WS-C3488-XL, WS-C2924-XL, 2509, 2511, also AIR-AP350)) for example.
I don't believe according to the following link that these models support envmon - http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
I would be grateful if anyone can confirm this?
No, these devices don't have the necessary hardware instrumentation for ENVMON support. However, the XL switches do support the c2900RpsFailed notification from the CISCO-C2900-MIB. That way you can at least get redundant power supply notifications from those devices.