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Configuration Guide - QoS

CloudEngine 8800, 7800, 6800, and 5800 V200R002C50

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

Context

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.

NOTE:

The CE8800, CE5850HI, CE6800 (excluding the CE6870EI), and CE7800 do not support this function.

Procedure

  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.

    NOTE:
    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.

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Updated: 2019-03-21

Document ID: EDOC1000166640

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