Load Based Teaming on UCS

I am using Load based teaming on UCS.  If vmnic0 is connected to the physical network through Fabric Interconnect A, and the connection from this fabric interconnect to the physical switch becomes saturated, does the load based teaming algorithm sense that?  Or does it not sense it due to the fact that the vmnic is in reality is not a physical NIC but is actually just a logical representation of a physical NIC?

Thanks for your reply.  Yes I'm aware that lbt can't sense beyond the hosts physical NIC.  But the question has to do more with whether UCS takes that virtual NIC that it presents and presents it in such a way that LBT can sense the contention the virtual NIC experiences as it contends with other virtual NICs within UCSes own world to place ethernet frames onto the wire.  

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