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H3C Technologies H3C WA2600 Series WLAN Access Points User Manual

Page 56

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8-5

To do…

Use the command…

Remarks

Set the EDCA parameters of
AC-BE or AC-BK 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 8-1

.

Set the EDCA parameters
and specify the ACK policy
for the AP

wmm edca ap { 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 uses the default EDCA
parameters shown in

Table 8-2

and uses the

Normal ACK policy.

Set the CAC policy

wmm cac
access-control-policy
{ channelutilization
[ channelutilization-value ] |
users
[ users-number ] }

Optional

By default, the users-based admission policy
applies, with the maximum number of users
being 20.

Map SVP packets to a
specified 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.

z

If CAC is enabled for an AC, CAC is also enabled for the 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.

z

It is recommended that you use the default EDCA parameter settings for APs and clients (except

the TXOPLimit parameter for APs using 802.11b radio cards) unless it is necessary to modify the

default settings.

z

When the radio card of an AP is 802.11b, it is recommended that you set the TXOPLimit values of

AC-BK, AC-BE, AC-VI, and AC-VO to 0, 0, 188, and 102 respectively.

z

The SVP packet mapping function takes effect only after you enable WMM.

Table 8-1 Default EDCA parameters for clients

AC

AIFSN

ECWmin

ECWmax

TXOP Limit

AC-BK

7 4 10

0

AC-BE

3 4 10

0

AC-VI

2 3 4 94

AC-VO

2 2 3 47

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