Last Modified: Apr 06, 2020
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BIG-IP Install/Upgrade, TMOS
Known Affected Versions:
14.1.0, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 14.1.2, 184.108.40.206, 220.127.116.11, 18.104.22.168, 15.0.0, 15.0.1, 22.214.171.124, 126.96.36.199, 15.1.0
Opened: Sep 12, 2019
If the IPS IM package is installed on a multi-slot device, and one slot is offline, the IM package version might be different on the offline slot when it comes back online. It also shows different versions of the Active IM package on different slots.
The primary blade syncs the IM package to all of the secondary blades that are online; however, when the offline blade comes back online, it does not have the updated IM package. As a result, traffic being processed by different blades will be using different IPS libraries and might cause inconsistency in the functionality
-- Multi-bladed clustered system. -- One of the blades is offline. -- The IPS IM package is installed to the primary blade.
Although there is no workaround, you can prevent the issue by ensuring that all blades are online when you install an IPS IM package.