No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

WLAN V200R008C10 Typical Configuration Examples

Rate and give feedback :
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 Spectrum Analysis

Example for Configuring Spectrum Analysis

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. The enterprise is located in an open place, and the WLAN is vulnerable to interference. When discovering severe interference on the WLAN, the network administrator can detect whether non-Wi-Fi interference exists on the WLAN through the spectrum analysis function.

Networking Requirements

Figure 4-64 Networking for configuring spectrum analysis

Data Planning

Table 4-65 AC data planning

Item

Data

AP group
  • Name: ap-group1
  • Referenced profiles: VAP profile wlan-net, regulatory domain profile default, 2G radio profile wlan-radio2g, 5G radio profile wlan-radio5g, and AP system profile wlan-spectrum

Air scan profile

  • Name: wlan-airscan

  • Air scan interval: 8000 ms
  • Air scan duration: 100 ms

2G radio profile

  • Name: wlan-radio2g

  • Referenced profiles: air scan profile wlan-airscan

5G radio profile

  • Name: wlan-radio5g

  • Referenced profiles: air scan profile wlan-airscan

AP system profile
  • Name: wlan-spectrum
  • IP address of the spectrum server: 10.137.43.4
  • Port number of the spectrum server: 32181
  • Port number used by the AC to receive spectrum information (encapsulated in UDP packets) from APs when the AC is used to send data to the spectrum server: 5001
  • Aging time of non-Wi-Fi devices on an AC during spectrum analysis: 5 minutes

Configuration Roadmap

Configure spectrum analysis so that the APs can detect non-Wi-Fi devices and send alarms to the AC.

Configuration Notes

  • If air scan related functions are enabled for a radio in normal mode, such as WIDS, spectrum analysis, and terminal location, the radio transmits common WLAN service data and provides the monitoring function that may affect transmission of common WLAN service data.
  • In spectrum analysis scenarios, to obtain enough sampling data, it is recommended that the scanning interval be set no more than 10 seconds and the scanning duration to 100 ms.
  • The channels to be scanned for spectrum analysis are fixed as all channels supported by the corresponding country code of an AP and are irrelevant to the configuration in an air scan profile.
  • 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 spectrum analysis.

    # Create AP system profile wlan-spectrum, and configure the spectrum server information and aging time of non-Wi-Fi device information on the AC during spectrum analysis.

    <AC6605> system-view
    [AC6605] sysname AC
    [AC] wlan
    [AC-wlan-view] ap-system-profile name wlan-spectrum
    [AC-wlan-ap-system-prof-wlan-spectrum] spectrum-analysis server ip-address 10.137.43.4 port 32181 via-ac ac-port 5001 
    [AC-wlan-ap-system-prof-wlan-spectrum] spectrum-analysis non-wifi-device aging-time 5
    [AC-wlan-ap-system-prof-wlan-spectrum] quit
    

    # Create the air scan profile wlan-airscan and configure the scan interval and scan duration.

    [AC-wlan-view] air-scan-profile name wlan-airscan
    [AC-wlan-air-scan-prof-wlan-airscan] scan-period 100
    [AC-wlan-air-scan-prof-wlan-airscan] scan-interval 8000
    [AC-wlan-air-scan-prof-wlan-airscan] quit

    # Create the 2G radio profile wlan-radio2g and bind the air scan profile wlan-airscan to the 2G radio profile.

    [AC-wlan-view] radio-2g-profile name wlan-radio2g 
    [AC-wlan-radio-2g-prof-wlan-radio2g] air-scan-profile wlan-airscan
    [AC-wlan-radio-2g-prof-wlan-radio2g] quit

    # Create the 5G radio profile wlan-radio5g and bind the air scan profile wlan-airscan to the 5G radio profile.

    [AC-wlan-view] radio-5g-profile name wlan-radio5g 
    [AC-wlan-radio-5g-prof-wlan-radio5g] air-scan-profile wlan-airscan
    [AC-wlan-radio-5g-prof-wlan-radio5g] quit

    # Bind the 5G radio profile wlan-radio5g and 2G radio profile wlan-radio2g to the AP group ap-group1.

    [AC-wlan-view] ap-group name ap-group1 
    [AC-wlan-ap-group-ap-group1] radio-5g-profile wlan-radio5g radio 1
    Warning: This action may cause service interruption. Continue?[Y/N]y
    [AC-wlan-ap-group-ap-group1] radio-2g-profile wlan-radio2g radio 0
    Warning: This action may cause service interruption. Continue?[Y/N]y
    [AC-wlan-ap-group-ap-group1] quit

    # Bind the AP system profile wlan-spectrum to the AP group ap-group1 and enable spectrum analysis in the AP group.

    [AC-wlan-view] ap-group name ap-group1
    [AC-wlan-ap-group-ap-group1] ap-system-profile wlan-spectrum 
    [AC-wlan-ap-group-ap-group1] radio 0
    [AC-wlan-group-radio-ap-group1/0] spectrum-analysis enable
    [AC-wlan-group-radio-ap-group1/0] quit
    [AC-wlan-ap-group-ap-group1] radio 1
    [AC-wlan-group-radio-ap-group1/1] spectrum-analysis enable
    [AC-wlan-group-radio-ap-group1/1] quit
    [AC-wlan-ap-group-ap-group1] quit
    

    # Enable the function of reporting spectrum analysis data on AP radios. The spectrum server performs spectrum analysis and draws spectrum graphs based on the data reported by the APs. The spectrum-report command becomes invalid after a restart, and needs to be configured again.

    [AC-wlan-view] spectrum-report ap-name area_1 radio 0 
    [AC-wlan-view] spectrum-report ap-name area_1 radio 1 

  3. Verify the configuration.

    # Run the display ap-system-profile name wlan-spectrum command on the AC to check spectrum analysis configuration.

    [AC-wlan-view] display ap-system-profile name wlan-spectrum
    ------------------------------------------------------------------------------  
    ...
    AP report to                                   : AC
    Server IP                                      : 10.137.43.4
    Server port                                    : 32181
    AC port                                        : 5001
    Device aging-time(minute)                      : 5
    ...
    ------------------------------------------------------------------------------ 
    

    # Run the display spectrum-analysis server-reporter command on the AC to check the APs that report spectrum packets to the spectrum server.

    [AC-wlan-view] display spectrum-analysis server-reporter
    ------------------------------------------------------------
    ID    AP name                          Radio ID
    ------------------------------------------------------------
    1     area_1                           0
    1     area_1                           1
    ------------------------------------------------------------
    Total: 2

    # Run the display wlan non-wifi-device all command on the AC to check the detected non-Wi-Fi devices.

    [AC-wlan-view] display wlan non-wifi-device all
    ----------------------------------------------------------------
    Detect AP name                         : area_1
    Detect AP radio ID                     : 1
    Detect AP channel                      : 36
    Non-Wi-Fi device type                  : 9
    Non-Wi-Fi device name                  : Unknown fix freq device
    Non-Wi-Fi device frequency type        : Narrow bandwidth
    Non-Wi-Fi device channel               : 149,150
    Non-Wi-Fi device RSSI                  : -62,-66
    Non-Wi-Fi device detect time last      : 2017-07-02/08:16:56
    Non-Wi-Fi device center frequency(MHz) : 5749
    Non-Wi-Fi device bandwidth(KHz)        : 70
    Non-Wi-Fi device duty(%)               : 100
    Non-Wi-Fi device interfere level       : 3
    ----------------------------------------------------------------
    Total: 1
    # View AP spectrum on the web platform to learn AP channel interference in deployment sites.
    1. Choose Monitoring > Spectrum Analysis. The Radio List page is displayed.



    2. Select an AP and click Start.

    3. In the AP radio list, click View Drawing in the Operation column. The related spectrum charts are displayed. A maximum of four spectrum charts can be displayed.



    4. Select your desired spectrum chart from the drop-down list box in the upper left corner. You can select Lower or Upper on the spectrum charts of a 5G radio to view spectrum charts of different frequencies.

    5. The Real-Time FFT chart shows that the signal strength of interference is mostly within the range of -80 dBm to -40 dBm. On the Swept Spectrogram chart, click Modify, set the signal strength scope at both ends of the color bar, and click Apply. The Swept Spectrogram chart shows that channel 149 has the most severe interference.
    6. On the Active Devices chart, click . A list of the detected non-Wi-Fi devices is displayed.



Configuration Files

  • AC configuration file

    #
     sysname AC
    #
    wlan
     air-scan-profile name wlan-airscan
      scan-period 100
      scan-interval 8000
     radio-2g-profile name wlan-radio2g
      air-scan-profile wlan-airscan
     radio-5g-profile name wlan-radio5g
      air-scan-profile wlan-airscan 
     ap-system-profile name wlan-spectrum
      spectrum-analysis server ip-address 10.137.43.4 port 32181 via-ac ac-port 5001
      spectrum-analysis non-wifi-device aging-time 5 
     ap-group name ap-group1
      ap-system-profile wlan-spectrum
      radio 0
       radio-2g-profile wlan-radio2g
       vap-profile wlan-net wlan 1
       spectrum-analysis enable 
      radio 1
       radio-5g-profile wlan-radio5g 
       vap-profile wlan-net wlan 1
       spectrum-analysis enable 
    #
    return
Translation
Download
Updated: 2019-03-30

Document ID: EDOC1000184389

Views: 90592

Downloads: 458

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next