The maximum frame size is specified in the MAXFRAME parameter in the line and controller descriptions. Larger frame sizes generally supply better performance. Large frame sizes may not work well for error-prone lines or networks because longer times are required to transmit large frames when errors are encountered.
For each line type, set these maximum frame sizes in the line description.
To take advantage of these large frame sizes, these values must be configured correctly. The MAXFRAME parameter on the line description and controller description must reflect the maximum value.
Having configured a large frame size does not negatively affect performance for small transfers. Note that both the server and the other link station must be configured for large frames. Otherwise, the smaller of the two maximum frame size values are used in transferring data. Bridges may also limit the frame size.
For more information about iSeries™ communications, see Communications Configuration.