Specifying the mutation map used on a port can lead to contradictions if there are other user-defined classes used in the same policy map that have a set CoS action configured. In this case the defined CoS takes priority over the mutation map.
Note
Egress QoS mutation does not apply to SLX 9150, SLX 9250, Extreme 8520, and Extreme 8720 devices.Note
DSCP Mutation map is not supported on SLX 9150, SLX 9250, Extreme 8520 and Extreme 8720 devices.