8-10
Table 8-4
The default EDCA parameters for clients
AC
AIFSN
ECWmin
ECWmax
TXOP Limit
AC-VI
2 3 4 94
AC-VO
2 2 3 47
z
For description on each EDCA parameter, see
WLAN QoS
in the
WLAN Configuration Guide
.
z
ECWmin must not be greater than ECWmax. The two parameters must be enabled or disabled
simultaneously.
z
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.
z
If both 802.11b and 802.11g clients are present, it is recommended that you use the default
TXOPLimit settings in
.
z
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.