Cisco Cisco WAP571E Wireless-AC N Premium Dual Radio Outdoor Access Point Manual De Mantenimiento
Wireless
Quality of Service
Cisco Small Business WAP551 and WAP561 Wireless-N Access Point
101
5
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Data 2 (Best Effort)—Medium priority queue, medium throughput and delay. Most
traditional IP data is sent to this queue.
traditional IP data is sent to this queue.
•
Data 3 (Background)—Lowest priority queue, high throughput. Bulk data that requires
maximum throughput and is not time-sensitive is sent to this queue (FTP data, for
example).
maximum throughput and is not time-sensitive is sent to this queue (FTP data, for
example).
STEP 3
Configure the following EDCA and Station EDCA parameters:
NOTE
These parameters are configurable only if you selected Custom in the previous
step.
•
Arbitration Inter-Frame Space—A wait time for data frames. The wait time is measured
in slots. Valid values for AIFS are 1 through 255.
in slots. Valid values for AIFS are 1 through 255.
•
Minimum Contention Window—An input to the algorithm that determines the initial
random backoff wait time (window) for retry of a transmission.
random backoff wait time (window) for retry of a transmission.
This value is the upper limit (in milliseconds) of a range from which the initial random
backoff wait time is determined.
backoff wait time is determined.
The first random number generated is a number between 0 and the number specified
here.
here.
If the first random backoff wait time expires before the data frame is sent, a retry counter
is incremented and the random backoff value (window) is doubled. Doubling continues
until the size of the random backoff value reaches the number defined in the Maximum
Contention Window.
is incremented and the random backoff value (window) is doubled. Doubling continues
until the size of the random backoff value reaches the number defined in the Maximum
Contention Window.
Valid values are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1023. This value must be lower
than the value for the Maximum Contention Window.
than the value for the Maximum Contention Window.
•
Maximum Contention Window—The upper limit (in milliseconds) for the doubling of
the random backoff value. This doubling continues until either the data frame is sent or
the Maximum Contention Window size is reached.
the random backoff value. This doubling continues until either the data frame is sent or
the Maximum Contention Window size is reached.
After the Maximum Contention Window size is reached, retries continue until a
maximum number of retries allowed is reached.
maximum number of retries allowed is reached.
Valid values are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1023. This value must be higher
than the value for the Minimum Contention Window.
than the value for the Minimum Contention Window.
•
Maximum Burst (WAP only)—A WAP EDCA parameter that applies only to traffic
flowing from the WAP to the client station.
flowing from the WAP to the client station.