Last Modified: Oct 19, 2025
                                            Affected Product(s):
                                            BIG-IP DNS
                                        
                                            Known Affected Versions:
                                            16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1
                                        
                                            Fixed In:
                                            17.5.0, 17.1.2
                                        
                                Opened: Jan 18, 2022 Severity: 3-Major
                                
                                    
When a new GTM is added to the Sync group, it takes a significant amount of time, and the newly added GTM won't become ready.
Clients of the BIG-IP GTM do not receive an answer, and application failures may occur.
-- GTMs in a cluster with a large number of persist records -- A new GTM device is added
None
None
A new DB variable gtm.persistsynctimespan is introduced. This setting controls the period for the persist records sent to a GTM peer as part of the persist sync operation. Increase the value if the peers are stuck waiting for persist record sync. Default value: 10 Minimum value: 1 Maximum value: 200