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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 ACL6-based Packet Filtering

Configuring ACL6-based Packet Filtering

Pre-configuration Tasks

Before configuring ACL6-based filtering, complete the following tasks:
  • Configure link layer attributes of interfaces to ensure that the interfaces work properly.

  • Configure an ACL6.

Context

ACL6-based packet filtering enables the device to control network traffic by permitting or rejecting packets matching ACL6 rules.

If the traffic-filter (system view), traffic-filter (VLAN view), and traffic-filter (interface view) commands are configured simultaneously, the ACL6-based simplified traffic policies applied to the interface, VLAN, and system take effect in descending order of priority.

Procedure

  • Configure packet filtering in the system.

    NOTE:

    When outbound ACL6-based packet filtering is configured in the system view on the CE12800, first run the traffic-policy ipv6-enhance-mode command in the system view.

    1. Run system-view

      The system view is displayed.

    2. Run traffic-filter ipv6 acl { { basic-acl | acl-name } | { advanced-acl | acl-name } } global [ slot slot-id ] { inbound [ priority { low | high } ] | outbound }

      ACL6-based packet filtering is configured in the system or a specified slot.

    3. Run commit

      The configuration is committed.

  • Configure packet filtering in a VLAN.
    1. Run system-view

      The system view is displayed.

    2. Run vlan vlan-id

      The VLAN view is displayed.

    3. Run traffic-filter ipv6 acl { { basic-acl | acl-name } | { advanced-acl | acl-name } } { inbound [ priority { low | high } ] | outbound }

      ACL6-based packet filtering is configured in the VLAN.

    4. Run commit

      The configuration is committed.

  • Configure packet filtering on an interface.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run traffic-filter ipv6 acl { { basic-acl | acl-name } | { advanced-acl | acl-name } } { inbound [ priority { low | high } ] | outbound }

      ACL6-based packet filtering is configured on the interface.

      NOTE:

      The ACL6-based simplified traffic policy can be configured on only the physical interface and Eth-Trunk.

    4. Run commit

      The configuration is committed.

Verifying the Configuration

Run the display traffic-policy applied-record traffic-filter [ global [ slot slot-id ] | interface interface-type interface-number | vlan vlan-id | qos group group-id ] [ inbound | outbound ] command to check the application record of a specified traffic policy.

Follow-up Procedure

For the CE12800, if a low-priority traffic policy takes effect before you apply a high-priority traffic policy, ACL6 rules may be slow to take effect. Consequently, service processing will be delayed. You can run the traffic-policy fast-mode command in the system view to enable fast delivery of ACL6s. This ensures that ACL6 rules take effect rapidly and services can be processed in real time.

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Updated: 2019-05-05

Document ID: EDOC1100004202

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