Bug ID 652954: BIG-IQ 5.x does not allow clustered BIG-IP devices to be added to custom device groups created in BIG-IQ 4.x

Last Modified: Nov 22, 2021

Bug Tracker

Affected Product:  See more info
BIG-IQ Platform(all modules)

Known Affected Versions:
5.0.0, 5.0.0 HF1, 5.1.0, 5.2.0

Opened: Mar 22, 2017
Severity: 4-Minor


BIG-IQ 5.x fails to properly add a device to a custom device group created in BIG-IQ 4.x. The error message in the UI is "Unable to establish trust with this device. Delete the device and re-add it."


The BIG-IP device cannot be properly managed via the device group.


This issue is applicable when the BIG-IP is a clustered device and the device group is a custom device group that was created in BIG-IQ 4.x.


Remove the device from the device group, which should clear any "Unable to establish trust" error on the BIG-IP devices inventory. Take a UCS backup of the BIG-IQ. Remove the device-group-key-pair for the device group using: "restcurl -X DELETE shared/device-group-key-pairs/{group name here}". Then add the device to the device group again.

Fix Information


Behavior Change