Dell PowerConnect W-Airwave Configuration Manual page 135

Table 52 Aruba Configuration > Profiles > SSID > EDCA Station Profile Settings
Field
General Settings
Folder
Name
Best Effort
Arbitrary Inter-
frame Space
Number (1-15)
Minimum
Contention
Window (Exponent)
(0-15)
Maximum
Contention
Window (Exponent)
(1-15)
Transmission
Opportunity Slots
in 32 usec Units
Background
Arbitrary Inter-
frame Space
Number
Minimum
Contention
Window (Exponent)
Maximum
Contention
Window (Exponent)
Transmission
Opportunity Slots
in 32 usec Units
AirWave Wireless Management Suite | Configuration Guide
Default Description
Top Use this field to set and display the folder with which the profile is associated.
The drop-down menu displays all folders available for association with the
profile.
Folders provide a way to organize the visibility of device parameters that is
separate from the configuration groups of devices. Using folders, you can
view basic statistics about device, and define which users have visibility to
which device parameters.
Blank Name of the EDCA STA profile.
3 WMM is an extension to the Carrier Sense Multiple Access with Collision
Avoidance (CSMA/CA) protocol's Distributed Coordination Function (DCF).
The collision resolution algorithm responsible for traffic prioritization depends
on the following configurable parameters for each AC:
4
arbitrary inter-frame space number (AIFSN)
minimum and maximum contention window (CW) size
10
0 For each AC, the backoff time is the sum of the AIFSN and a random value
between 0 and the CW value. The AC with the lowest backoff time is granted
the opportunity to transmit (TXOP). Frames with the highest priority AC are
more likely to get TXOP as they tend to have the lowest backoff times (a result
of having smaller AIFSN and CW parameter values). The value of the CW
varies through time as the CW doubles after each collision up to the maximum
CW. The CW is reset to the minimum value after successful transmission.
In addition, you can configure the TXOP duration for each AC.
7 WMM is an extension to the Carrier Sense Multiple Access with Collision
Avoidance (CSMA/CA) protocol's Distributed Coordination Function (DCF).
The collision resolution algorithm responsible for traffic prioritization depends
on the following configurable parameters for each AC:
4
arbitrary inter-frame space number (AIFSN)
minimum and maximum contention window (CW) size
10
0 For each AC, the backoff time is the sum of the AIFSN and a random value
between 0 and the CW value. The AC with the lowest backoff time is granted
the opportunity to transmit (TXOP). Frames with the highest priority AC are
more likely to get TXOP as they tend to have the lowest backoff times (a result
of having smaller AIFSN and CW parameter values). The value of the CW
varies through time as the CW doubles after each collision up to the maximum
CW. The CW is reset to the minimum value after successful transmission.
In addition, you can configure the TXOP duration for each AC.
Aruba Configuration Reference | 135