Flow control is a feature defined in the IEEE 802.3x specification, enabling a receiving device to signal congestion to a sending device, which allows for the sending device to temporarily halt transmission, alleviating congestion at the receiving device
- Flow control— Some Fast Ethernet devices support flow control, where devices can send pause frames, which instruct the remote end to stop sending data for a specific period of time.
- Flow control— Flow control is important for gigabit Ethernet connections, where it is reasonable for the receive buffers on a gigabit interface to become full due to the high speeds of data transfer, causing congestion on the interface
Flow-control administration. Possible settings:
- On indicates the local port requires the far end to send flow control.
- Off indicates the local port does not allow the far end to send flow control.
- Desired indicates the local end allows the far end to send flow control.
Refer:
http://www.cisco.com/en/US/docs/ios/lanswitch/command/reference/lsw_s1.html#wp1071945
Regards,
MystaJoneS 