Dell PowerConnect W-Airwave W-Airwave 7.2 Configuration Guide - Page 119

Best Effort, Background, Video, Arbitrary Inter-frame, Space Number, Minimum Contention, Window

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Table 52 Profiles > SSID > EDCA Station Profile Settings (Continued) Field Default Description Best Effort Arbitrary Inter-frame 3 Space Number (1-15) Minimum Contention 4 Window (Exponent) (0-15) Maximum Contention 10 Window (Exponent) (1-15) Transmission Opportunity 0 Slots in 32 uSec Units Background Arbitrary Inter-frame 7 Space Number Minimum Contention 4 Window (Exponent) Maximum Contention 10 Window (Exponent) Transmission Opportunity 0 Slots in 32 uSec Units ACM No Video Arbitrary Inter-frame 2 Space Number Minimum Contention 3 Window (Exponent) Maximum Contention 4 Window (Exponent) 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:  arbitrary inter-frame space number (AIFSN)  minimum and maximum contention window (CW) size 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. 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:  arbitrary inter-frame space number (AIFSN)  minimum and maximum contention window (CW) size 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. Define whether or not admission control mandatory (ACM) is to be supported on APs configured with this EDCA profile. 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:  arbitrary inter-frame space number (AIFSN)  minimum and maximum contention window (CW) size Dell PowerConnect W AirWave 7.2 | Configuration Guide Dell PowerConnect W Configuration Reference | 119

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Dell PowerConnect W AirWave 7.2
| Configuration Guide
Dell PowerConnect W Configuration Reference
|
119
Best Effort
Arbitrary Inter-frame
Space Number
(1-15)
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:
arbitrary inter-frame space number (AIFSN)
minimum and maximum contention window (CW) size
Minimum Contention
Window
(Exponent) (0-15)
4
Maximum Contention
Window
(Exponent) (1-15)
10
Transmission Opportunity
Slots in 32 uSec Units
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.
Background
Arbitrary Inter-frame
Space Number
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:
arbitrary inter-frame space number (AIFSN)
minimum and maximum contention window (CW) size
Minimum Contention
Window
(Exponent)
4
Maximum Contention
Window
(Exponent)
10
Transmission Opportunity
Slots in 32 uSec Units
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.
ACM
No
Define whether or not admission control mandatory (ACM) is to be supported on APs
configured with this EDCA profile.
Video
Arbitrary Inter-frame
Space Number
2
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:
arbitrary inter-frame space number (AIFSN)
minimum and maximum contention window (CW) size
Minimum Contention
Window
(Exponent)
3
Maximum Contention
Window
(Exponent)
4
Table 52
Profiles > SSID > EDCA Station
Profile Settings
(Continued)
Field
Default
Description