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| Sun Ethernet Fabric Operating System ### QoS Administration Guide

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## Define Incoming Packet Priorities

You can define the priority of incoming packets by using the `priority-map` command so that incoming packets are tagged with a defined priority. You can use the `map interface` command to define the interface.

1. Define the priority for incoming packets on a given interface (`0/4` in this example).

       SEFOS# configure terminal
       SEFOS(config)# priority-map 500
       SEFOS(config-pri-map)# map interface extreme-ethernet 0/4 in-Priority-type vlanPri in-priority 5 regen-priority 3
       SEFOS(config-pri-map)# exit
       SEFOS(config)# exit

2. Review the priority map information.

       SEFOS# show priority-map 500
       QoS Priority Map Entries
       ------------------------
       PriorityMapId          : 500
       IfIndex                : Ex0/4
       VlanId                 : 0
       InPriorityType         : VlanPriority
       InPriority             : 5
       RegenPriority          : 3
       InnerRegenPriority     : None

   You can use any of the preceding CLIs to define a packet stream. You must define each traffic stream with an interface. After you define a packet stream, you must map it into a traffic class for QoS management. You do this with the `class-map` command.

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