117
AC TXOP Limit AIFSN ECWmin ECWmax
AC-VI 94 1 3 4
AC-VO 47 1 2 3
ECWmin cannot be greater than ECWmax.
On a device operating in 802.11b radio mode, H3C recommends you to set the TXOP-Limit to 0, 0,
188, and 102 for AC-BK, AC-BE, AC-VI, and AC-VO.
Setting EDCA parameters for wireless clients
1. Select Interface Setup > Wireless > Wireless QoS from the navigation tree.
2. Click the QoS Service tab.
3. Click the icon in the Operation column for the desired radio in the list.
4. In the Client EDCA list, find the priority type (AC_BK is taken for example here) to be modified.
5. Click the corresponding icon in the Operation column.
Figure 118 Setting client EDCA parameters
Table 72 Configuration items
Item Description
Radio Selected radio.
Priority type Priority type.
AIFSN Arbitration inter-frame spacing number used by clients.
TXOP Limit Transmission opportunity limit used by clients.
ECWmin Exponent form of CWmin used by clients.
ECWmax Exponent form of CWmax used by clients.
CAC
Enable CAC.
• Enable—Enables CAC.
• Disable—Disables CAC.
AC-VO and AC-VI support CAC, which is disabled by default. This item is
not available for AC-BE or AC-BK, because they do not support CAC.
Table 73 Default EDCA parameters for clients
AC TXOP Limit AIFSN ECWmin ECWmax
AC-BK 0 7 4 10
AC-BE 0 3 4 10
AC-VI 94 2 3 4
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