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Configuration Guide - QoS

CloudEngine 12800 and 12800E V200R003C00

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, and ACL-based simplified traffic policy.
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Configuring Hierarchical Traffic Policing

Configuring Hierarchical Traffic Policing


The device supports hierarchical traffic policing. After the system uses MQC to implement traffic policing (level-1 CAR) for service flows matching a traffic classifier in a traffic policy, the system aggregates all the service flows matching the traffic classifiers associated with the level-1 CAR in the same traffic policy and performs traffic policing (level-2 CAR) for the aggregated flow. Hierarchical traffic policing implements statistical multiplexing of traffic and fine-grained service control. For details about level-1 CAR, see Configuring MQC to Implement Traffic Policing.


  1. Run system-view

    The system view is displayed.

  2. Run qos car car-name { percent percent-value | cir cir-value [ kbps | mbps | gbps ] [ cbs cbs-value [ bytes | kbytes | mbytes ] [ pbs pbs-value [ bytes | kbytes | mbytes ] ] | pir pir-value [ kbps | mbps | gbps ] [ cbs cbs-value [ bytes | kbytes | mbytes ] pbs pbs-value [ bytes | kbytes | mbytes ] ] ] }

    A QoS CAR profile is created and CAR parameters are configured.

    The CIR in the CAR profile must be larger than the CIR in the traffic behavior.
  3. Run traffic behavior behavior-name

    The traffic behavior view is displayed.

  4. Run car car-name share

    The aggregated CAR action is configured.

  5. Run commit

    The configuration is committed.

Updated: 2019-05-05

Document ID: EDOC1100004202

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