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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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What Is the Relationship Between WMM and 802.11e?

802.11e defines Quality of Service (QoS) for the wireless LAN, which provides the required service quality for voice and multimedia applications and enhances network performance. Wi-Fi Multimedia (WMM) defines four access categories, including voice, video, best effort, and background to optimize network communication quality and ensure stable access of corresponding applications to network resources. The WMM standard is a subset of IEEE 802.11e.

How Do I Configure Multicast Packet Suppression to Reduce Impact of a Large Number of Low-Rate Multicast Packets on the Wireless Network?

No ACK mechanism is provided for multicast packet transmission on air interfaces. In addition, wireless links are unstable. To ensure stable transmission of multicast packets, they are usually sent at low rates. If a large number of such multicast packets are sent from the network side, the air interfaces may be congested. You are advised to configure multicast packet suppression on switch interfaces connected to APs to reduce impact of a large number of low-rate multicast packets on the wireless network. Exercise caution when configuring the rate limit; otherwise, the multicast services may be affected.

Example for Configuring Multicast Packet Suppression
  1. Create the traffic classifier test and define a matching rule.

    <HUAWEI> system-view
    [HUAWEI] sysname SwitchA
    [SwitchA] traffic classifier test
    [SwitchA-classifier-test] if-match destination-mac 0100-5e00-0000 mac-address-mask ffff-ff00-0000   //Match the destination MAC address of multicast packets.
    [SwitchA-classifier-test] quit
  2. Create the traffic behavior test, enable traffic statistics collection, and set the traffic rate limit.

    [SwitchA] traffic behavior test
    [SwitchA-behavior-test] statistic enable
    [SwitchA-behavior-test] car cir 100   //Set the rate limit to 100 kbit/s. If multicast services are available, you are advised to set the rate limit according to the service traffic.
    [SwitchA-behavior-test] quit
  3. Create the traffic policy test and bind the traffic classifier and traffic behavior to the traffic policy.

    [SwitchA] traffic policy test
    [SwitchA-trafficpolicy-test] classifier test behavior test
    [SwitchA-trafficpolicy-test] quit
  4. Apply the traffic policy to inbound or outbound directions of interfaces.

    [SwitchA] interface gigabitethernet 0/0/1
    [SwitchA-GigabitEthernet0/0/1] traffic-policy test inbound
    [SwitchA-GigabitEthernet0/0/1] traffic-policy test outbound
    [SwitchA-GigabitEthernet0/0/1] quit
Updated: 2019-01-11

Document ID: EDOC1000176006

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