108
Syntax
wmm edca client { ac-vi | ac-vo } { aifsn aifsn-value | cac { disable | enable } | ecw ecwmin
ecwmin-value ecwmax ecwmax-value | txoplimit txoplimit-value } *
undo wmm edca client { ac-vi | ac-vo }
Default
The default EDCA parameter values of AC-VI or AC-VO queues for clients are shown in Table 15.
Table 15 Default EDCA parameter values of AC-VI or AC-VO queues for clients
AC AIFSN ECWmin ECWmax TXOP Limit
AC-VI 2 3 4 94
AC-VO 2 2 3 47
Views
Radio interface view
Predefined user roles
network-admin
Parameters
ac-vi: Specifies the AC-VI (video traffic) queue.
ac-vo: Specifies the AC-VO (voice traffic) queue.
aifsn aifsn-value: Specifies the arbitration inter-frame spacing number (AIFSN), in the range of 1 to
15.
cac: Specifies CAC. The AC-VO and AC-VI queues support CAC. CAC is disabled by default.
disable: Disables CAC.
enable: Enables CAC.
ecwmin ecwmin-value: Specifies the exponent form of CWmin (ECWmin), in the range of 0 to 15.
ecwmax ecwmax-value: Specifies the exponent form of CWmax (ECWmax), in the range of 0 to 15.
The value of ECWmax cannot be smaller than the value of ECWmin.
txoplimit txoplimit-value: Specifies the transmission opportunity limit (TXOP Limit) value, in the
range of 0 to 65535 (in units of 32 microseconds). If the value is 0, a client can send only one packet
each time it holds the channel.
Usage guidelines
As a best practice, set the TXOPLimit value to 188 and 102 for the AC-VI and AC-VO queues,
respectively when all the clients are 802.11b clients.
As a best practice, use the default TXOPLimit values for both the AC-VI and AC-VO queues if both
802.11b and 802.11g clients exist in the WLAN.
Examples
# Set the AIFSN to 3 for the AC-VO queue.
<Sysname> system-view
[Sysname] interface wlan-radio 0/1
[Sysname-WLAN-Radio0/1] wmm edca client ac-vo aifsn 3
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