Explicit Congestion Notification (ECN) is an extension to the Internet Protocol and to the Transmission Control

ECN 4.21.3F

This feature introduces a new CLI command which disables the above-mentioned propagation of DSCP and ECN bits from the outer IP header. 

By default, the DSCP and ECN bits of VXLAN bridged packets are not rewritten. Currently, for bridged packets undergoing VXLAN encapsulation, the DSCP in the outer IP header is derived from TC and the ECN bits are set to zero. The desired behavior is that the outer IP header should be remarked with ingress packet DSCP and ingress packet ECN. Also, local congestion should be handled correctly.

This feature supports counting ECN marked packets on a per egress port per tx queue basis. The

4.21.1F ECN