Learn about frame size configuration and troubleshooting.
The larger your frame size, the more data your server can pack into it. Hence, you can increase your data throughput. Typically you set the maximum frame size to the largest size that is supported by your input/output adapter (IOA). However, a device along the way will drop the frame if it cannot support the larger size.
For example, if frames are being sent to a remote system on a different LAN, the frame must be go through a bridge to be retransmitted to the remote LAN. If the bridge cannot support the frame size that your LAN is using, the frame will be dropped or discarded. In the Ethernet environment, no indication of the smaller frame size of the bridge is received. The problem will be detected when a connection with the remote system is established and a CPA57A1 message is sent to the configured message queue.
- SSAP maximum frame parameter (line description)
Maximum frame size (line descriptions for token ring, Gigabit
and 10 Gigabit Ethernet networks)
- Maximum frame size (controller description)