Last Modified: Apr 10, 2019
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Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2
Opened: Oct 21, 2016
Traffic disrupted while tmm restarts.
1. classification hitless upgrade is triggered 2. pending (not saved) changes on any of the virtual servers
Change of virtual server configuration triggers new library to be loaded during upgrade which wasn't expected by hitless upgrade mechanism and led to tmm crash. This is fixed in versions starting with 12.1.2.