It is my understanding that you don't have that capability in those images (or platform). I didn't find the feature in the feature set of the 2600 platform. The feature you are looking for is: "MPLS Quality of Service (QoS) Enhancements"
From the feature set definition:
- MPLS quality of service enhancements allow service providers to classify packets according to their type, input interface, and other factors by setting (marking) each packet within the MPLS experimental field without changing the IP precedence/DSCP field. For example, service providers can classify packets with or without considering the rate of the packets that PE1 receives. If the rate is a consideration, the service provider marks in-rate packets differently from out-of-rate packets.
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