H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 167)

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Step Command Remarks
3. Enable WMM. wmm enable
By default, WMM is enabled.
The 802.11n protocol stipulates
that all 802.11n clients support
WLAN QoS. Therefore, when the
radio operates in 802.11an or
802.11gn mode, you should
enable WMM. Otherwise, the
associated 802.11n clients may
fail to communicate.
4. Set the EDCA parameters of
AC-VO or AC-VI queues for
clients.
wmm edca client { ac-vo | ac-vi }
{ aifsn aifsn-value | ecw ecwmin
ecwmin-value ecwmax ecwmax
-value | txoplimit txoplimit-value |
cac } *
Optional.
By default, a client uses the default
EDCA parameters shown in Table
3 .
5. Set the EDCA parameters of
AC-BE or AC-BK queues for
clients.
wmm edca client { ac-be | ac-bk }
{ aifsn aifsn-value | ecw ecwmin
ecwmin-value ecwmax ecwmax
-value | txoplimit txoplimit -value } *
Optional.
By default, a client uses the default
EDCA parameters shown in
Table
3 .
6. Set the EDCA parameters and
specify the ACK policy for the
AP radio.
wmm edca radio { ac-vo | ac-vi |
ac-be | ac-bk } { aifsn aifsn-value |
ecw ecwmin ecwmin-value ecwmax
ecwmax -value | txoplimit txoplimit
-value | noack } *
Optional.
By default, an AP radio uses the
default EDCA parameters shown
in
Table 4 and uses the Normal
ACK policy.
7. Set the CAC policy.
wmm cac policy { channelutilization
[ channelutilization-value ] | users
[ users-number ] }
Optional.
By default, the users-based
admission policy applies, with the
maximum number of users being
20.
8. Map SVP packets to a
specified AC queue. wmm svp map-ac { ac-vi | ac-vo |
ac-be | ac-bk }
Optional.
By default, the SVP packet
mapping function is disabled.
Note that SVP packet mapping
applies to non WMM clients, and
does not take effect on WMM
clients.
NOTE:
•
If CAC is enabled for an AC queue, CAC is also enabled for the AC queues with higher priority. For
example, if you use the wmm edca client command to enable CAC for the AC-VI queue, CAC is also
enabled for the AC-VO queue. However, enabling CAC for the AC-VO queue does not enable CAC for
the AC-VI queue.
• H3C recommends that you use the default EDCA parameter settings for APs and clients (except the
TXOPLimit parameter for devices using 802.11b radio cards) unless it is necessary to modify the default
settings.
• When the radio card of a device is 802.11b, H3C recommends that you set the TXOPLimit values of the
AC-BK, AC-BE, AC-VI, and AC-VO queues to 0, 0, 188, and 102 respectively.
• The SVP packet mapping function takes effect only after you enable WMM.