iSCSI port binding creates connections for the traffic between the software or dependent hardware iSCSI adapters and the physical network adapters.
You can also use the VMware vSphere® Distributed Switch™ and VMware NSX® Virtual Switch™ in the iSCSI port biding configuration. For information about NSX virtual switches, see the VMware NSX documentation.
If you use a vSphere distributed switch with multiple uplink ports, for port binding, create a separate distributed port group per each physical NIC. Then set the team policy so that each distributed port group has only one active uplink port. For detailed information on distributed switches, see the vSphere Networking documentation.