The dscp mutation map is a per-port configuration that permits to modify the dscp field of a packet. The mutation map works for EGRESS traffic only
We trust the documentation but it’s event better to verify it.
The topology si simple:
PC1 11.0.0.1 –> G1/0/1 C3750-24 G1/0/24 –> G1/0/24 C3750-48 G1/0/1 –> PC2 11.0.0.2 running wireshark
First step: turn on QOS on both switches with the command
mls qos Then on C3750-24 port G1/0/1 we set COS to 5:
