I have 3750 in between two Router ( MPLS enabled)as below:
R1-3750 - 802.1q trunk
R2-3750 - 802.1q trunk
I have R1 sending MPLS labelled packet with layer vlan tagging and cos value.
Now, on 3750 i want to implemnet Qos with trst cos value as 3750 doesn't understand MPLS.
So i trust cos value and do qos mapping Cos to specific Queue and do SRR share on egress.
Now, 3750 map incomming cos to dscp ( using cos-dscp map table) and can modify dscp at egree.
But question is , incomming packet will be MPLS packet so for 3750 all packet will be no ip packet ( as don't understand MPLS), will that just do qos on cos rightway and send packet with unchanged cos and dscp value to R2 ??