The Ethernet Port represents connectivity between a farm and unmanaged devices external to an I-Fabric. Adding an Ethernet Port to your farm design is one step in connecting a device that cannot be configured and managed with the software.
After a farm is activated, the device must be physically connected to the provisioned switch port.
If you are using the Ethernet Port to indicate connectivity to a back channel network connection, do the following tasks:
Read the following information about unmanaged devices in Adding and Removing Unmanaged Ethernet Devices in N1 Provisioning Server 3.1, Blades Edition, System Administration Guide.
Place the Ethernet Port in a location within the farm that gives you the easiest access to the critical servers.
Keep in mind how much access you are opening up between the farm and your organization, and apply restrictions where appropriate.