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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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How Do I Configure Queues on an AR to Ensure QoS Services on the Layer 2 Network?

How Do I Configure Queues on an AR to Ensure QoS Services on the Layer 2 Network?

Networking Requirements

In Figure 29-102, Router servers as the egress gateway of an enterprise and connects to the Internet through GE0/0/1. LAN-side voice, video, and data services on the enterprise intranet are connected to Eth2/0/0 of Router through Switch. Packets of different services on the LAN are identified based on the DSCP priority and forwarded to the Internet through GE0/0/1 of Router. The Internet bandwidth for the enterprise is 10 Mbit/s. The enterprise wants to preferentially forward packets of the voice service and ensure a bandwidth of 4 Mbit/s exclusively for the voice service.

Figure 29-102  Networking for guaranteed bandwidths for services of high priorities

Configuration Roadmap

The configuration roadmap is as follows:
  1. Configure a traffic classifier to match packets of the voice service.
  2. Configure a traffic behavior. Configure packets of the voice service to be forwarded to the LLQ queue, and set a minimum bandwidth.
  3. Bind the traffic classifier and traffic behavior to a traffic policy.
  4. Apply the traffic policy to the interface used by an AR to connect to the Internet.

Procedure

  1. Configure a traffic classifier to match packets of the voice service.

    [Huawei] traffic classifier Voice 
    [Huawei-classifier-Voice] if-match dscp 46 
    [Huawei-classifier-Voice] quit

  2. Configure a traffic behavior. Configure packets of the voice service to be forwarded to the LLQ queue, and set a minimum bandwidth.

    [Huawei] traffic behavior Voice 
    [Huawei-behavior-Voice] queue llq bandwidth 4000 
    [Huawei-behavior-Voice] quit

  3. Bind the traffic classifier and traffic behavior to a traffic policy.

    [Huawei] traffic policy Voice 
    [Huawei-trafficpolicy-Voice] classifier Voice behavior Voice 
    [Huawei-trafficpolicy-Voice] quit

  4. Apply the traffic policy to the interface used by an AR to connect to the Internet.

    [Huawei] interface GigabitEthernet 0/0/1 
    [Huawei-GigabitEthernet0/0/1] traffic-policy Voice outbound 
    [Huawei-GigabitEthernet0/0/1] quit

Precautions

  1. This example describes how to configure an AR1220 V200R007C00SPCb00.
  2. If no queue or bandwidth is specified for the video and data services, packets of these services are forwarded to the BE queue by default. To assign a bandwidth to the video or data service, configure a traffic classifier to match the DSCP priority of the video or data service packets and a traffic behavior to specify the queue type and bandwidth, bind the traffic classifier and traffic behavior to a policy, and then apply the policy.
  3. A queue scheduling traffic policy takes effect only when it is applied to the outbound direction of an outbound interface.
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Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 448707

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