Name: Cisco 2100 Series
Brand: Cisco
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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 “Configuring

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.

Cisco 2100 Series Configuration Guide

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