which QoS marker is only locally significant?

QoS group is the internal label used by the router/switch to ID packets as a member of a specific class; label is NOT part of the packet header and is local to the router/switch; label provides a way to tag a packet for subsequent QoS actions; QoS group label is IDed at ingress and used at egress; used to aggregate different classes of input traffic for a specific action in an output policy; QoS groups can be used to aggregate multiple input streams across input classes in policy maps to have the same QoS treatment on the egress port; assign the same QoS group number in the input policy map to all streams that require the same egress treatment and match the QoS group number in the output policy map to specify the required queuing and scheduling actions; QoS groups are used to implement the MPLS tunnel mode – output Per Hop Behavior of a packet is determined by the input EXP bits but packet remains unmodified; match EXP bits on input, set a QoS group, match that QoS group on output to obtain the required QoS behavior