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WLAN V200R008C10 Typical Configuration Examples

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Example for Configuring Airtime Fair Scheduling

Example for Configuring Airtime Fair Scheduling

Networking 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.

The administrator requires that multiple users on the network be able to fairly use network bandwidth to improve overall user experience.

Figure 4-70 Networking for configuring airtime fair scheduling

Data Planning

Table 4-71 AC data planning

Item

Data

AP group
  • Name: ap-group1
  • Referenced profiles: 2G radio profile wlan-radio2g, and 5G radio profile wlan-radio5g

RRM profile

  • Name: wlan-rrm

  • Airtime fair scheduling: enabled

2G radio profile

  • Name: wlan-radio2g

  • Referenced profiles: RRM profile wlan-rrm

5G radio profile

  • Name: wlan-radio5g

  • Referenced profiles: RRM profile wlan-rrm

Configuration Roadmap

  1. Enable airtime fair scheduling to ensure that multiple users on a radio can fairly use network bandwidth to improve overall user experience.

Configuration Notes

  • 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

    • 2G radio profile: wlan-radio2g
    • 5G radio profile: wlan-radio5g
    NOTE:
    • If an AP has different configurations from that in the AP group, the configuration on the AP takes precedence.
    • A new profile takes effect only after being bound to an AP or an AP group.

  2. Configure airtime fair scheduling.

    # Create the RRM profile wlan-rrm and enable airtime fair scheduling.

    <AC6606> system-view
    [AC6606] sysname AC
    [AC] wlan
    [AC-wlan-view] rrm-profile name wlan-rrm
    [AC-wlan-rrm-prof-wlan-rrm] airtime-fair-schedule enable
    [AC-wlan-rrm-prof-wlan-rrm] quit
    

    # Bind the RRM profile wlan-rrm to the 2G radio profile wlan-radio2g.

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

    # Bind the RRM profile wlan-rrm to the 5G radio profile wlan-radio5g.

    [AC-wlan-view] radio-5g-profile name wlan-radio5g 
    [AC-wlan-radio-5g-prof-wlan-radio5g] rrm-profile wlan-rrm
    [AC-wlan-radio-5g-prof-wlan-radio5g] quit

  3. Verify the configuration.

    Run the display rrm-profile name wlan-rrm command on the AC to check the configuration of the RRM profile. The command output shows that airtime fair scheduling has been enabled. Therefore, users on the network can fairly use network bandwidth.

    [AC-wlan-view] display rrm-profile name wlan-rrm
    ------------------------------------------------------------                    
    Auto channel select                                    : enable                 
    Auto transmit power select                             : enable                 
    PER threshold for trigger channel/power select(%)      : 60                     
    Airtime fairness schedule                              : enable
    Dynamic adjust EDCA parameter                          : disable                
    ...
    

Configuration Files

  • AC configuration file

    #
     sysname AC
    #
    wlan
     rrm-profile name wlan-rrm
      airtime-fair-schedule enable
     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
      radio 1
       radio-5g-profile wlan-radio5g 
     ap-id 0 type-id 35 ap-mac 60de-4476-e360 ap-sn 210235554710CB000042
      ap-name area_1
      ap-group ap-group1
    #
    return
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Updated: 2019-03-30

Document ID: EDOC1000184389

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