From TheBestLinks.com
Adaptive switching mode is a user-defined facility to maximize the efficiency of the switch. Adaptive switching starts in the default switch forwarding mode you have selected (cut-through if you selected adaptive mode as the default switching mode). Depending on the number of runts and CRC errors at that port, the mode changes to the "best" of the other two switching modes. As the numbers of runts and CRC errors change, so does the forwarding mode.
This is best illustrated by the table below:
| Switching mode:
| Defects:
| Then, adaptive mode changes
the switching mode to:
|
| Cut-through
| High numbers of CRC errors
| Store-and-forward
|
| High numbers of runts
| Fragment-free
|
| Fragment-free
| High numbers of CRC errors
| Store-and-forward
|
| Low numbers of runts
| Cut-through
|
| Store-and-forward
| Low numbers of CRC errors
| Fragment-free
|
| Low numbers of CRC errors and runts
| Cut-through
|
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