Big-IP VE VNIC interfaces

Hi experts,

 

I am currently simulating 2 LTMs and 2 GTM in my home esxi environment. I was testing shutting down the switchport interface and disabling the VNIC on esxi command line and also unchecking the NIC when VE is powered on, to my surprise even if I shutdown the switchport interface connecting to my F5 (let say to my Data interface), tried disabling the vnic and even tried unchecking it, I noticed that my F5 VE interface under Network >> Interface remained in the "UP" state. I was expecting it will go down but didn't.

 

Anyone know what I am missing here?

 

Appreciate your help a lot.

 

Thanks,