

You don't need to tell the port group this, you simply make sure you are not using more than 12Gbps per grouping and that is it.

If you go over 12Gbps per port grouping then you are oversubscribed. So if you use 12Gbps or less for each port group then you have no oversubscription.

Each port group gets 12Gbps to the switch fabric. This is broken down into 4 port groupings. The ws-x4712 has a 48Gbps connection to the switch fabric.
