This problem is due to a bug that is documented in Cisco bug ID CSCse02250.
This is a known issue on CiscoWorks Wireless LAN Solution Engine (WLSE) that runs version 2.13. The MFP Timebase Invalid fault is a false warning generated even when MFP is not enabled in IDS Network Wide Setting in WLSE. This issue is resolved in version 2.13.1, so in order to avoid this fault when it should not be displayed, you need to upgrade your WLSE to the release 2.13.1.
The latest version for WLSE is version 2.13.1, which can be downloaded fromCisco Downloads for Wireless LAN Solution Engine.
WLSE-2.13.1u-K9.zip is the file that you download from the provided link in order to upgrade your WLSE from 2.13 to 2.13.1.
WLSE-2.13.1-K9.readme-V1.txt is the readme file with all the instructions to perform this upgrade.
CiscoWorks Wireless LAN Solution Engine (WLSE)
CiscoWorks Wireless LAN Solution Engine (WLSE) Express
Wireless Devices Errors, Warnings, Statistics and Log Messages
WLSE Errors, Warnings and Log Messages
Management Frame Protection (MFP)
Network Time protocol (NTP) / Simple Network Time Protocol (SNTP)
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