Example for Configuring WMM and Priority Mapping

Fat AP and Cloud AP V200R019C00 Web-based Configuration Guide

This document describes how to configure and maintain devices through the web NMS client.

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Example for Configuring WMM and Priority Mapping

Networking Requirements

As shown in Figure 3-14, an enterprise deploys an AP to provide a WLAN with the SSID wlan-net so that users can access the network anywhere at any time. Voice, video, and data services are transmitted within the coverage area of the AP. The enterprise requires that voice and video services be assigned high priorities and preferentially guaranteed with sufficient network resources and bandwidth.

Figure 3-14 Networking diagram for configuring WMM and priority mapping

Data Preparation

Item	Data
Service VLAN for STAs	VLAN 101
DHCP server	The AP functions as a DHCP server to assign IP addresses to STAs.
IP address pool for STAs	10.23.101.2-10.23.101.254/24
SSID profile	Name: wlan-net SSID name: wlan-net
Security profile	Name: wlan-net Security policy: WPA-WPA2+PSK+AES Password: a1234567
Traffic profile	Name: wlan-traffic Downlink priority mapping on air interface: trusted priority DSCP and default mapping value.
VAP profile	Name: wlan-net Service VLAN: VLAN 101 Referenced profiles: SSID profile wlan-net, security profile wlan-net, and traffic profile wlan-traffic.
2G radio profile	Name: default WMM: enabled Area: Voice and video EDCA parameters: default value

Configuration Roadmap

The configuration roadmap is as follows:

Use the WLAN configuration wizard to configure WLAN services.
Enable WMM in the radio profile and configure voice and video services to preferentially use bandwidth on the wireless side.
Retain the default priority mapping in the traffic profile to ensure that voice and video services can be preferentially forwarded on the wired side.
Connect STAs to the WLAN to verify the configuration.

Procedure

Configure basic WLAN services.
1. Choose Wizard > Config Wizard. The Configure Wi-Fi Signals page is displayed.
2. Configure Wi-Fi signals.
  # Click Create. The Basic Information page is displayed.
  
  # Configure basic information about an SSID.
  
  # Click Next. The IP and Rate page is displayed.
  
  # Set IP address parameters.
  
  Configure the DNS server address as required.
  
  # Click Finish.
3. Configure Internet connection parameters.
  # Click Next. The Configure Internet Connection page is displayed.
  
  # Add an interface to VLAN 101 in tagged mode.
  
  If you log in to the web platform using a PC whose Ethernet interface is being modified, do not delete the existing VLAN configuration on the interface to ensure that the PC can communicate with Fat APs. As shown in the following figure, GigabitEthernet0/0/0 is added to VLAN 1 by default and STAs communicate with the AP through this interface. You can use the default IP address of the AP to log in to the web platform. If you need to use the default IP address to log in to the web platform, do not delete VLAN 1.
  
  # Click Finish.
Configure the WMM function.

The following example configures a 2G radio profile. The configuration of the 5G radio profile is similar.

# Choose Configuration > WLAN Service > WLAN Config.

# Choose Radio0 > Radio Management > Radio Profile in WLAN Config. The Radio Profile page is displayed.

# On the Advanced Configuration tab in the radio profile, enable the WMM function.

# Click Apply. In the dialog box that is displayed, click OK.
Configure priority mapping.
In this example, you must set the highest DSCP priority for video and voice packets to ensure that the video and voice packets can be preferentially forwarded. By default, the voice and video packets already have the highest DSCP priorities in the traffic profile. You only need to set the trusted priority of downstream packets to DSCP on the air interface but does not need to change the mapping value.

If you want to change the default priority mapping, for example, to make the priority of the video packets higher than that of the voice packets, perform the following configuration.

# Choose Configuration > WLAN Service > WLAN Config.

# In the WLAN Config navigation tree, click Radio0. Click in front of VAP Configuration. Under it, click in front of wlan-net. Click Traffic Profile. The Traffic Profile page is displayed.

# Click Create. The Create Traffic Profile page is displayed.

# Enter the traffic profile name wlan-traffic in Profile name and click OK. The parameter setting page is displayed.

# On the Advanced Configuration tab, configure priority mapping and set the mapped priority of video packets higher than that of the voice packets.

By default, the user priority of voice packets is set to 6 or 7 on the terminal, and that of the video packets is set to 4 or 5.

In the following figure, the DSCP priorities of video packets are 48 and 56, and those of the voice packets are 32 and 40. Based on the settings, video packets will be preferentially transmitted.

# Click Apply. In the Info dialog box that is displayed, click OK.
Verify the configuration.
1. The WLAN with the SSID wlan-net is available.
2. The STA can associate with the WLAN and obtain an IP address 10.23.101.x/24 and its gateway address is 10.23.101.1.
3. Choose Monitoring > Terminal Manage > STA Management. In User, you can see that STAs go online properly and obtain IP addresses.
4. Normal voice and video communication improves user experience in voice and video services.