I can provide specific configuration steps for your environment. Guide: Importing Juniper vMX and vQFX into CML2.4
The vQFX requires a specific internal connection to bridge the control plane (RE) and data plane (PFE). Management Port: Connect the first interface ( ) of the RE to your management network or admin VLAN. Internal Link: Connect the second interface ( ) of the RE directly to the second interface ( ) of the PFE. Data Ports:
If the RE starts in a "non-master" role, a common workaround is to use the command request virtual-chassis reactivate or reboot both the RE and PFE simultaneously. Guide: Importing Juniper vMX and vQFX into CML2.4