Intel Corporation
FLOW CONTROL TECHNOLOGIES

Abstract:

Examples described herein relate to a switch that is to receive a message identifying congestion in a second switch; drop the message; generate a pause frame; and cause transmission of the pause frame to at least one sender of packets to a congested queue in the second switch. In some examples, the message includes one or more of: a destination IP address, Differentiated Services Code Point (DSCP) value, or pause duration for the congested queue. In some examples, the DSCP value is to identify a traffic class of the congested queue. In some examples, the pause frame is consistent with Priority Flow Control (PFC) of IEEE 802.1Qbb (2011). In some examples, the switch is to: store, from the message identifying congestion in the second switch, congestion information associated with the congested queue comprising one or more of: destination internet protocol (IP) address, Differentiated Services Code Point (DSCP) value, or pause end time of the congested queue.