When you changed the state, did you apply the changed to the DFM server (i.e. DFM > Configuration > Polling and Thresholds > Apply Changes)? Did you reboot the server after doing this? Did a DFM rediscovery run for this device during this time?
About how long do you have to wait before the interface status reverts back to true? What interface types did you unmanage? I am trying to recreate this problem locally.
I cannot reproduce. I unmanaged two interfaces (an ATM interface and a Dialer interface) on a 3745 using the Detailed Device View. I applied my changes. After about six hours, both interfaces are still unmanaged.
I still cannot reproduce even after two days. If you notice this on the next day, that implies that a rediscovery does run (since rediscoveries run at 0200 every day by default). Try forcing a rediscovery of the device after setting the interfaces to their desired states. Go to DFM > Device Management > Rediscover/Delete to do the rediscovery.
I was able to reproduce after running a rediscovery on the device in question. I found the problem, and created a patch against DFM 3.1.3. If you contact the TAC, and have your engineer contact me directly, I can provide the patch.
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