Configuring WMM

Procedure

1. Run system-view

   The system view is displayed.

2. Run wlan

   The WLAN view is displayed.

3. Run wmm-profile { id profile-id | name profile-name } ^*

   The WMM profile view is created or entered.

4. (Optional) Run display wmm-profile { all | id profile-id | name profile-name }

   The WMM profile configuration is displayed.

   If the WMM configuration has not been modified, you can run the display wmm-profile { all | id profile-id | name profile-name } command to view the default configuration of a WMM profile and determine whether to modify the WMM configuration.

5. Run wmm enable

   WMM is enabled.

   By default, WMM is enabled.

   By default, WMM is disabled on a terminal. To implement the WMM function, you must enable WMM on terminals and devices concurrently.

6. (Optional) Run wmm mandatory enable

   STAs that do not support WMM are not allowed to connect to a WMM-enabled AP.

   By default, STAs that do not support WMM are allowed to connect to a WMM-enabled AP.

   On a WLAN, wireless channels are open and all STAs have the same chance to occupy a channel. You can configure WMM to distinguish high-priority packets and enable the high-priority packets to preempt channels. You can also disable STAs that do not support WMM from connecting to a WMM-enabled AP, which prevents those STAs from preempting channels of WMM-capable STAs.

7. Run wmm edca client { ac-vo | ac-vi | ac-be | ac-bk } { aifsn aifsn-value | ecw ecwmin ecwmin-value ecwmax ecwmax-value | txoplimit txoplimit-value } ^*

   EDCA parameters are set for STAs.

   Table 5-6 lists the default EDCA parameter settings for STAs.

   Table 5-6 Default EDCA parameter settings for STAs

   Packet Type	ECWmax	ECWmin	AIFSN	TXOPLimit
   AC_VO	3	2	2	47
   AC_VI	4	3	2	94
   AC_BE	10	4	3	0
   AC_BK	10	4	7	0

   As shown in the table, queues of AC_VO, AC_VI, AC_BE, and AC_BK are in descending order of priority.

8. Run wmm edca ap { ac-vo | ac-vi | ac-be | ac-bk } { aifsn aifsn-value | ecw ecwmin ecwmin-value ecwmax ecwmax-value | txoplimit txoplimit-value | ack-policy { normal | noack } } ^*

   EDCA parameters and ACK policies are set for APs.

   Table 5-7 lists the default EDCA parameter settings and ACK policy for APs.

   Table 5-7 Default EDCA parameter settings and ACK policy for APs

   Packet Type	ECWmax	ECWmin	AIFSN	TXOPLimit	ACK Policy
   AC_VO	3	2	1	47	normal
   AC_VI	4	3	1	94	normal
   AC_BE	6	4	3	0	normal
   AC_BK	10	4	7	0	normal

   As shown in the table, queues of AC_VO, AC_VI, AC_BE, and AC_BK are in descending order of priority.