Typically, you set the maximum frame size to the largest size supported by your input/output adapter (IOA). But, if the device cannot support your frame size, change to a size that the device can support.
The larger your frame size, the more data your system can pack into it. Hence, your data throughput can increase. However, a device will drop the frame if it cannot support your frame size. If you cannot configure the device to support your frame size, change your maximum frame size to a size that the device can support.
You can change one or more of these maximum frame size fields (the parentheses contain the location of the field):
The maximum frame size used by your system during the connection process will be the smallest of these fields.