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WLAN V200R008C10 Typical Configuration Examples

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Common Misconfigurations

Common Misconfigurations

Multicast Packet Suppression Is Not Configured, Causing Slow Network Access of STAs

Symptom
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 amount of abnormal multicast traffic is received on the network side, the air interfaces may be congested, and STAs may suffer from slow network access. You are advised to configure multicast packet suppression 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.
  • In direct forwarding mode, you are advised to configure multicast packet suppression on switch interfaces connected to APs.
  • In tunnel forwarding mode, you are advised to configure multicast packet suppression on WLAN-ESS interfaces of the AC.

Procedure

  • Configure multicast packet suppression in direct forwarding mode.

    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
      

  • Configure multicast packet suppression in tunnel forwarding mode.

    1. Create the traffic profile test and set the maximum traffic volume of multicast packets in the profile.

      <AC6605> system-view
      [AC6605] wlan
      [AC6605-wlan-view] traffic-profile name test
      [AC6605-wlan-traffic-prof-test] traffic-optimize multicast-suppression packets 100   //Set the maximum traffic volume of multicast packets to 100 pps. If multicast services are available, you are advised to set the rate limit according to the service traffic.
      [AC6605-wlan-traffic-prof-test] quit
      
    2. Bind the traffic profile to the VAP profile.

      [AC6605-wlan-view] vap-profile name test
      [AC6605-wlan-vap-prof-test] traffic-profile test
      [AC6605-wlan-vap-prof-test] quit
      

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Updated: 2019-03-30

Document ID: EDOC1000184389

Views: 90627

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