H3C WA Series Command Reference Manual page 59

Table 8-4 The default EDCA parameters for clients
AC
AC-VI
AC-VO
For description on each EDCA parameter, see WLAN QoS in the WLAN Configuration Guide.
ECWmin must not be greater than ECWmax. The two parameters must be enabled or disabled
simultaneously.
When all the clients are 802.11b terminals, it is recommended that you set the TXOPLimit to 188
and 108 for AC-VI and AC-VO respectively.
If both 802.11b and 802.11g clients are present, it is recommended that you use the default
TXOPLimit settings in
IF CAC is enabled for an AC, CAC is also enabled for ACs with higher priority. For example, if you
use the wmm edca client command to enable CAC for AC-VI, CAC is also enabled for AC-VO.
However, enabling CAC for AC-VO does not enable CAC for AC-VI.
Examples
# Set AIFSN to 3 for AC-VO.
<Sysname> system-view
[Sysname] interface wlan-radio 1/0/1
[Sysname-WLAN-Radio1/0/1] wmm edca client ac-vo aifsn 3
wmm edca client (ac-be and ac-bk)
Syntax
wmm edca client { ac-be | ac-bk } { aifsn aifsn-value | ecw ecwmin ecwmin-value ecwmax
ecwmax-value | txoplimit txoplimit-value } *
undo wmm edca client { ac-be | ac-bk } { aifsn | ecw | txoplimit | all }
View
WLAN-radio interface view
Default Level
2: System level
Parameters
ac-be: Specifies AC-BE (best-effort traffic).
ac-bk: Specifies AC-BK (background traffic).
all: Specifies all the EDCA parameters.
aifsn-value: AIFSN parameter of EDCA, which ranges from 2 to 15.
ecwmin-value: ECWmin parameter of EDCA, which ranges from 0 to 15.
AIFSN
2 3
2 2
Table 8-4.
ECWmin ECWmax
4
3
8-10
TXOP Limit
94
47