The better question to ask is why does the controller not report it to the WCS via a trap.
Do you see it in the trap log on the controller? If not focus on an issue with the controller. If you do see it in the trap log then check the trap controls on the controller to see if it is set to send a trap to the trap receiver for that issue.
On the controller go to Management > SNMP > Trap Controls > Cisco AP Traps.
The last thing to check if it does appear and the controller is configured to send the trap to the trap receiver ( and WCS is added as a receiver ) is the severity on the WCS for the alarm being to low to report:
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...
I have created a Powershell script to automatically add a Wireless Guest
User on Cisco WLCs. (tested on 2500 Series) The script should be
completely self explanatory. Prerequisites: Powershell SNMP Module
(Install-Module -Name SNMP) SNMP Write Access to y...