BigIP 4200 Active/Standby <> Change Management IP/Hostname

Hi,

you destroyed device trust by changing hostname.

Device identity

The devices in a BIG-IP® device group use x509 certificates for mutual authentication. Each device in a device group has an x509 certificate installed on it that the device uses to authenticate itself to the other devices in the group.

Device identity is a set of information that uniquely identifies that device in the device group, for the purpose of authentication. Device identity consists of the x509 certificate, plus this information:

• Device name
• Host name
• Platform serial number
• Platform MAC address
• Certificate name
• Subjects
• Expiration
• Certificate serial number
• Signature status

To avoid BigIPs in state Active/Active, you can switch StandBy Unit into "Force to Offline" mode.