Below mentioned Out of 4 Scenarios, which all scenarios depicts correct IO path in vSphere Networking.
There are 5 VMs running on vSphere Standard Switch of ESXi Host.
Each VM is having single vNIC mapped to one of the vPort of vSS. These vNICs are E1000 type vNICs.
There are 5 Uplink assigned to vSS.
All the 5 Uplinks are Active Adapters. All these Uplinks are 1000mbps card.
There are three VMs connected to vSwitch. VM1 Mac Adress is AA, VM2 Mac Address is BB,VM3 Mac Address is CC.
vmnic0 is uplink connected to Physical Switch Port ( Let’s say 0/1). This Uplink Mac Address is XX.
How Physical Switch will be processing VMs Packets coming from vSwitch and goes on Wire.