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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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(Optional) Configuring the Switch to Use the Enhanced Mode When a Traffic Policy Is Applied

(Optional) Configuring the Switch to Use the Enhanced Mode When a Traffic Policy Is Applied

Context

  • By default, a traffic policy containing IPv4 rules is valid only for Layer 3 packets when it is applied to the outbound direction. You can use the traffic-policy ipv4-enhance-mode command to enable the enhanced IPv4 mode on a device when a traffic policy containing IPv4 rules is applied. Then the traffic policy is valid for both Layer 2 and Layer 3 packets when it is applied to the outbound direction.
  • By default, when a traffic policy containing IPv6 rules is applied to the outbound direction, the device uses the loopback mode to forward traffic. All traffic on a port is looped back inside the device before being forwarded. You can use the traffic-policy ipv6-enhance-mode command to enable the enhanced IPv6 mode on a device when a traffic policy containing IPv6 rules is applied. Then traffic is directly forwarded without being looped back inside the device when the traffic policy is applied to the outbound direction.
NOTE:

Only the CE6870EI supports this function.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run traffic-policy { ipv4-enhance-mode | ipv6-enhance-mode }

    The switch is enabled to use the IPv4 enhanced mode when a traffic policy is applied.

    By default, the switch is disabled from using the enhanced mode when a traffic policy is applied.

    NOTE:

    This command is valid for only the new traffic policy. To make this command take effect for existing traffic policies, delete the traffic policies and reconfigure them.

  3. Run commit

    The configuration is committed.

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Updated: 2019-03-21

Document ID: EDOC1000166640

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