Brocade Mobility RFS7000-GR Controller System Reference Guide (Supporting software release 4.1.0.0-040GR and later) - Manual (Page 224)

210 Brocade Mobility RFS7000-GR Controller System Reference Guide
53-1001944-01
Viewing access port adoption defaults
4
4. To modify the properties of WMM Adoption Settings, select a radio and click the Edit button.
For more information, see “Editing access port adoption WMM settings” on page 210.
Editing access port adoption WMM settings
Use the Edit screen to modify a WMM profile's properties (AIFSN, Transmit Ops, ECW Min and ECW
Max). Modifying these properties may be necessary as Access Categories are changed and
transmit intervals need adjustment to compensate for larger data packets and contention
windows.Use
“Configuring WMM” on page 181 to configure downstream traffic parameters. WLAN
WMM configuration affects your upstream traffic parameters.
To edit the existing WMM settings:
1. Select Network Setup > Radio Adoption Defaults from the main menu tree.
2. Click the WMM tab.
3. Select a radio from the table and click the Edit button.
The AP Type identifies whether the radio is an 802.11a radio or an 802.11 bg radio. This value
is read-only and cannot be modified. There are four editable access categories: Video, Voice,
Best Effort and Background.
4. Enter a number between 0 and 15 for the AIFSN value for the selected radio.
The AIFSN value is the current Arbitrary Inter-frame Space Number. Higher-priority traffic
categories should have lower AIFSNs than lower-priority traffic categories. This causes
lower-priority traffic to wait longer before trying to access the medium.
ECW Min The ECW Min is combined with the ECW Max to define the Contention Window.
From this range, a random number is selected for the back off mechanism. Lower
values are used for higher priority traffic.
ECW Max The ECW Max is combined with the ECW Min to make the Contention Window.
From this range, a random number is selected for the back off mechanism. Lower
values are used for higher priority traffic.