Explicit Congestion Notification (ECN)
ECN was initially defined for TCP/IP in RFC 3168 by embedding an indication for congestion in the IP header and an acknowledgement in the TCP header. ECN compatible switches and routers mark packets when congestion is detected. The congestion indication in IP header is also used by for congestion control of RoCEv2.
Which Cisco Switches (ACI ?) are ECN compatible ?
