Under certain conditions you might need to exclude physical adapters with low capacity from the bandwidth allocation model of Network I/O Control version 3.

For example, if the bandwidth allocation on a vSphere Distributed Switch is tailored on top of 10 GbE NICs, you might not be able to add a 1GbE NIC to the switch because it cannot meet the higher allocation requirements configured on the 10GbE NICs.


  • Verify that the host is running ESXi 6.0 and later.
  • Verify that vSphere Distributed Switch is version 6.0.0 and later.

  • Verify that Network I/O Control on the switch is version 3.


  1. In the vSphere Web Client, navigate to the host.
  2. On the Configure tab, expand System and select Advanced System Settings .
  3. Set the physical adapters that you need to function outside the scope of Network I/O Control as a comma-separated list to the Net.IOControlPnicOptOut parameter.
    For example: vmnic0,vmnic3
  4. Click OK to apply the changes.