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Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 4 Configuring Controller SettingsWireless Device Access
Configuring EDCA Parameters
Step 4
If you want to enable MAC optimization for voice, check the
Enable Low Latency MAC
check box.
Otherwise, leave this check box unchecked, which is the default value. This feature enhances voice
performance by controlling packet retransmits and appropriately aging out voice packets on lightweight
access points, thereby improving the number of voice calls serviced per access point.
Note
You should enable low latency MAC only if the WLAN allows WMM clients. If WMM is
enabled, then low latency MAC can be used with any of the EDCA profiles. See the
QoS Enhanced BSS” section on page 6-32
for instructions on enabling WMM.
Caution
We recommend that you not use the low latency MAC feature if you are using the 1140, 1250, 1260, and
3500 series access points that are based on the Marvell platform. If used, the data packets are retried at
the data rate specified multiple times without downshifting the rates.
We also recommend that you not use the low latency MAC feature if you are using the 1120, 1130, 1230,
and 1240 series access points (not based on the Marvell platform). If used, the number of retries is
reduced to 3 with the first retry at the initial rate.
Step 5
Click
Apply
to commit your changes.
Step 6
To re-enable the radio network, click
Network
under 802.11a/n or 802.11b/g/n, check the
802.11a
(or
802.11b/g
)
Network
Status
check box, and click
Apply
.
Step 7
Click
Save Configuration
to save your changes.
Using the CLI to Configure EDCA Parameters
Follow these steps to configure EDCA parameters using the CLI.
Step 1
To disable the radio network, enter this command:
config
{
802.11a
|
802.11b
}
disable
network
Step 2
To save your settings, enter this command:
save config
Step 3
To enable a specific EDCA profile, enter this command:
config advanced
{
802.11a
|
802.11b
}
edca-parameters
?
where
?
is one of the following:
•
wmm-default
•
svp-voice
•
optimized-voice
•
optimized-video-voice
Note
Refer to the
“Using the GUI to Configure EDCA Parameters”
section above for a description of
each option.
