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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 4-62 Networking for configuring Band Steering

Data Planning

Table 4-63 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.

    Check Item

    Command

    Data

    Check the AP group to which an AP belongs.

    display ap all

    AP group: ap-group1

    Check all profiles referenced by the AP group.

    display ap-group name ap-group1

    VAP profile: wlan-net

    Check all profiles referenced by the VAP profile.

    display vap-profile name wlan-net

    SSID profile: wlan-net

  2. Configure the band steering function.

    # Enable the band steering function in the VAP profile wlan-net. By default, the band steering function is enabled.
    NOTE:

    When band steering is enabled on one radio of an AP, the function takes effect on the SSID of the AP. If different VAP profiles are applied to two radios of the AP, you only need to enable the band steering function in the VAP profile of one radio.

    <AC6605> system-view
    [AC6605] sysname AC
    [AC] wlan
    [AC-wlan-view] vap-profile name wlan-net
    [AC-wlan-vap-prof-wlan-vap] undo band-steer disable 
    [AC-wlan-vap-prof-wlan-vap] quit
    

    # Create the RRM profile wlan-rrm and configure load balancing between radios in the profile to prevent heavy load on a single radio. The start threshold for load balancing between radios is 15, and the load difference threshold is 25%.

    [AC-wlan-view] rrm-profile name wlan-rrm
    [AC-wlan-rrm-prof-wlan-rrm] band-steer balance start-threshold 15 
    [AC-wlan-rrm-prof-wlan-rrm] band-steer balance gap-threshold 25
    [AC-wlan-rrm-prof-wlan-rrm] quit
    # Create the 2G radio profile radio2g and bind the RRM profile wlan-rrm to the 2G radio profile.
    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.

    [AC-wlan-view] radio-2g-profile name radio2g 
    [AC-wlan-radio-2g-prof-radio2g] rrm-profile wlan-rrm
    [AC-wlan-radio-2g-prof-radio2g] quit

    # Bind the 2G radio profile radio2g to the AP group ap-group1.

    [AC-wlan-view] ap-group name ap-group1 
    [AC-wlan-ap-group-ap-group1] radio-2g-profile radio2g radio 0
    [AC-wlan-ap-group-ap-group1] quit

  3. Verify the configuration.

    # Run the display vap-profile name wlan-net command on the AC. The command output shows that the band steering function is enabled in the VAP profile.

    [AC-wlan-view] display vap-profile name wlan-net
    --------------------------------------------------------------------------------
    ...
    Band steer                                      : enable              
    ...
    --------------------------------------------------------------------------------

    # Run the display rrm-profile name wlan-rrm command on the AC to check the band steering configuration.

    [AC-wlan-view] display rrm-profile name wlan-rrm
    ------------------------------------------------------------                    
    ...
    Band balance start threshold                           : 15           
    Band balance gap threshold(%)                          : 25           
    ...
    ------------------------------------------------------------

    # In the conference hall, most STAs connect to the 5 GHz frequency band, and users enjoy good service experience.

Configuration Files

  • AC configuration file

    #
     sysname AC
    #
    wlan
     vap-profile name wlan-net
     rrm-profile name wlan-rrm
      band-steer balance gap-threshold 25
      band-steer balance start-threshold 15
     radio-2g-profile name wlan-radio2g
      rrm-profile wlan-rrm
     radio-5g-profile name wlan-radio5g
      rrm-profile wlan-rrm
     ap-group name ap-group1
      radio 0
       radio-2g-profile wlan-radio2g 
       vap-profile wlan-net wlan 1
      radio 1
       radio-5g-profile wlan-radio5g 
       vap-profile wlan-net wlan 1
    #
    return
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Updated: 2019-03-30

Document ID: EDOC1000184389

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