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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).
Example for Configuring Band Steering

Example for Configuring Band Steering

Service Requirements

Enterprise users can access the network through WLANs, which is the basic requirement of mobile office. Furthermore, users' services are not affected during roaming in the coverage area. To relieve pressure on the 2.4 GHz frequency band, enable STAs to connect to the 5 GHz frequency band.

Networking Requirements

Use APs that support both 5 GHz and 2.4 GHz frequency bands.

Figure 5-56 Networking for configuring Band Steering

Data Planning

Table 5-63 AC data planning
Item Data
VAP profile
  • Name: wlan-net
  • Band steering function: enabled
  • Referenced profiles: SSID profile wlan-net and security profile wlan-net

RRM profile

  • Name: wlan-rrm

  • Start threshold for load balancing between radios: 15

  • Load difference threshold for load balancing between radios: 25

2G radio profile

  • Name: wlan-radio2g

  • Referenced profiles: RRM profile wlan-rrm

Configuration Roadmap

Configure the band steering function and proper band steering parameters so that STAs can preferentially access the 5 GHz frequency band.

Configuration Notes

  • Use APs that support both 5 GHz and 2.4 GHz frequency bands and configure the same SSID and security policy on the 5 GHz and 2.4 GHz radios.
  • To allow a STA to preferentially associate with the 5 GHz radio and achieve a better access effect, configure larger power for the 5 GHz radio than the 2.4 GHz radio.
  • 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 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 in traffic profiles of the AC.
    For details on how to configure traffic suppression, see How Do I Configure Multicast Packet Suppression to Reduce Impact of a Large Number of Low-Rate Multicast Packets on the Wireless Network?.
  • Configure port isolation on the interfaces of the device directly connected to APs. If port isolation is not configured and direct forwarding is used, a large number of unnecessary broadcast packets may be generated in the VLAN, blocking the network and degrading user experience.

  • In tunnel forwarding mode, the management VLAN and service VLAN cannot be the same. Only packets from the management VLAN are transmitted between the AC and APs. Packets from the service VLAN are not allowed between the AC and APs.

Procedure

  1. Check the basic configuration of the WLAN.
    1. Choose Configuration > AP Config > AP Group > AP Group, and confirm that the AP group ap-group1 already exists.
    2. Click ap-group1. Choose VAP Configuration, confirm that the VAP profile wlan-net already exists, and check all referenced profiles.
  2. Configure the band steering function.
    1. Enable the band steering function in the VAP profile wlan-net. By default, the band steering function is enabled.

      # Choose VAP Configuration > wlan-net. The VAP profile page is displayed.

      # Enable the band steering function on the VAP profile page.

      # Click Apply. In the dialog box that is displayed, click OK.

    2. In the RRM profile, configure load balancing between radios to prevent heavy load on a single radio. Set the start threshold for load balancing between radios to 15, and the load difference threshold to 25%.

      # Choose Radio Management > Radio 0 > 2G Radio Profile > RRM Profile. Click Create. The Create RRM Profile page that is displayed

      # Enter the profile name wlan-rrm and click OK. The RRM profile configuration page is displayed.

      # Set the start threshold for load balancing between radios to 15, and the load difference threshold to 25% on the RRM profile configuration page.

      # Click Apply. In the dialog box that is displayed, click OK.

      # Choose Radio Management > Radio 1 > 5G Radio Profile > RRM Profile > wlan-rrm. The RRM profile configuration page is displayed. Configure inter-frequency load balancing for radio 1. The configuration is similar to that of radio 0 and is not mentioned here.

      NOTE:

      If different RRM profiles are bound to the 2G and 5G radio profiles and configured with different band steering parameters, parameters in the 2G radio profile preferentially take effect.

  3. Verify the configuration.

    # Choose Monitoring > User > User Distribution. Most STAs can connect to the 5 GHz frequency band, and users enjoy good service experience.

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Updated: 2019-03-30

Document ID: EDOC1000184389

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