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S12700 V200R013C00 Configuration Guide - QoS

This document describes the configurations of QoS functions, including MQC, priority mapping, traffic policing, traffic shaping, interface-based rate limiting, congestion avoidance, congestion management, packet filtering, redirection, traffic statistics, ACL-based simplified traffic policy, and HQoS.
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(Optional) Configuring an Interface Priority

(Optional) Configuring an Interface Priority


An interface's priority is used in the following scenarios:
  • If the interface receives untagged packets, the device provides differentiated services for the packets based on the interface priority.

  • If the priority mapping function is disabled on the interface using the trust upstream none command, packets received on the interface can only be forwarded through priority mapping. In this case, the device provides differentiated services for the packets based on the interface priority.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run port priority priority-value

    The interface priority is set.

    The default interface priority is 0.


    An interface switched to Layer 3 mode using the undo portswitch command uses priority 0 and cannot have a priority configured for it.

Updated: 2019-04-08

Document ID: EDOC1100065653

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