Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1
Fixed In:
12.0.0, 11.6.1 HF2, 11.5.4
Opened: Sep 25, 2014 Severity: 3-Major
After performing a full sync, sometimes the BIG-IP systems remain out of sync.
The BIG-IP systems remain out of sync even after a sync operation.
A full sync must be performed. There must be more than one active connection to mcpd, and one of them must get disconnected before the sync completes.
There are 2 possible workaround: 1) Reset device trust and then re-associate peer devices. 2) Set sync-leader using the following tmsh command. (You might need to run the command more than once until the cid.id of the lagging device is equal or greater than the peer unit.) 'tmsh modify cm device-group fail_over_group_name devices modify { name_of_standby_device { set-sync-leader } }'. Note: You can run the following command from the active device to view any cid.id mismatch, and if further set-sync-leader commands are necessary: 'tmsh run cm watch-devicegroup-device'.
After performing a full sync, BIG-IP systems remain in sync as expected, even when active mcpd connections are deleted before the sync completes.