theoretically and practicaly the DSCP or IP prec values are copied to EXP bits of shim header.
Does that same applies to when Atom is configured ?? because in Atom the PE receives traffic from CE and that could be vlan tagged. PE imposes the MPLS tag received from egree PE and then imposes the tunnel tag and send it to the egress PE.
are the COS values copied to the appropriate EXP bits at this time ??