Pause Frames

Ethernet Pause Frames is a mechanism for flow control which is used to cause a temporary stop of transmission from the origin. Typically it is used when the sender temporarily or intermittently transmits faster than the device can receive.

The PAUSE frame is defined by IEEE 802.3x and uses MAC Control frames to carry the PAUSE commands. Ethernet pause frames are supported on full duplex only.

Note: If a port is over-subscribed, Ethernet Pause Frame flow control does not ensure no-loss behavior.