Configure an MPLS QoS EXP-to-DSCP Mutation Map

1. Enter global configuration mode.
   

   device# configure terminal
   

2. Create and name an MPLS QoS EXP-to-DSCP mutation map.
   

   device(config)# qos-mpls map exp-dscp expDscpMap
   

3. Define the EXP-to-DSCP values.
   

   device(exp-dscp-expDscpMap)# exp 0 to dscp 7 
   device(exp-dscp-expDscpMap)# exp 1 to dscp 23 
   device(exp-dscp-expDscpMap)# exp 3 to dscp 31 
   device(exp-dscp-expDscpMap)# exp 4 to dscp 62
   

   The default value is used for those DSCP that are not explicitly defined.
4. Return to privileged exec mode
   

   device(exp-dscp-expDscpMap)# end
   

5. Verify the configuration.
   

   device# show qos maps exp-dscp expDscpMap
   
   exp-dscp map 'expDscpMap'
       Exp   : 0  1  2  3  4  5  6  7
      ------- ------------------------
       DSCP  : 0  2  4  3  6  4  5  7
   
      Enabled on the following slots:
   

6. Save the running-config file to the startup-config file.
   

   device# copy running-config startup-config
   

This example summarizes the commands in this procedure.

device# configure terminal
device(exp-dscp-expDscpMap)# exp 0 to priority 7 drop-precedence 0
device(exp-dscp-expDscpMap)# exp 0 to dscp 7 
device(exp-dscp-expDscpMap)# exp 1 to dscp 23 
device(exp-dscp-expDscpMap)# exp 3 to dscp 31 
device(exp-dscp-expDscpMap)# exp 4 to dscp 62
device(exp-dscp-expDscpMap)# end
device# show qos maps exp-dscp expDscpMap
device# copy running-config startup-config