Hello, As I know Packet to output Queue mapping in SRR is done based on QoS label, and QoS label is based on the trust. For instance is DSCP is trusted then the QoS label is generated based on DSCP, and if the CoS has been trusted then the QoS label is generated by the CoS value. Please refer to QoS configuration on 3560 Figure 31-1.
So based on that, when the CoS is trusted, the output queue is using the CoS mappings, while when the DSCP is trusted, then the DSCP queue mappings are used.
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