First, after any Spectrum Upgrade, check to see if there has been any Certification Paks released since the version you upgraded to was released. This is to ensure the version you upgraded to also has the most recent Certifications. You can find Certification paks listed here:
Second, after any Spectrum Upgrade, it is recommended to run the provided "NewMM.pl" script located in <SPECROOT>/Install-Tools/PostInstall
The NewMM.pl script will check for any existing models based on System Object ID and compare the Model Type assigned. If the Model Type on the current device is different than what is listed for the Official Certification, the NewMM.pl script will change the model to the correct Model Type.
Then, for any models still showing "DIFFERENT MODEL TYPE" alarms that did not get resolved by NewMM.pl, then you want to manually edit the Certification of the device to manually assign the correct Model Type. To do this, you first want to check the official certification of the device based on its System Object ID to see what Model Type is was certified as. Then using Device Certification utility in OneClick, you can correct the Model Type manually. See these steps below:
1. Select the respective alarm in the OneClick Console.
2. In the Component Details Pane -> Information -> CA Spectrum Modeling Information -> System Object ID. Copy the SysObjID.
3. Note the sysObjectID and then look for it at https://netops-certification.broadcom.com/vendors(default-header:vendors)
4. When you will see the results click on the first line in the first column.
5. A new page will open with all the details related to that respective SystemID / device.
6. You will see the Model Type in this new window. See below -
7. Go back to OneClick console and right click on the selected alarm.
8. Utilities-> Device certification -> There will be a column with Model Type where you will see the Model Type.
9. Edit that incorrect Model Type with the correct one ( which you found in the Device certification page ).
11. From here, the model must be Rediscovered in order for Spectrum to model the device under the new correct Model Type. Note that Rediscovering the device will result in a new model handle for the device, and will reset the Events stream and NCM configuration logs back to initial.